Pythia8 Namespace Reference

Header for classes to set beam momentum and interaction vertex spread. More...

Namespaces
	HIUnits
	LHAPDF5Interface
	Map the f77 routines to C++.

Classes
class	AlpgenHooks
class	AlpgenPar
class	AlphaEM
class	AlphaStrong
class	AlphaSUN
class	amcnlo_unitarised_interface
class	AmpCalculator
	Calculator class for amplitudes, antennae, and Breit-Wigners. More...
class	AmpWrapper
	Class to contain an amplitude and two outgoing polarizations. More...
class	Angantyr
	The default HeavyIon model in Pythia. More...
class	AntennaFunction
class	AntennaFunctionIF
class	AntennaFunctionIX
class	AntennaSetFSR
	The AntennaSetFSR class. Simple container of FF and RF antenna functions. More...
class	AntennaSetISR
	The AntennaSetISR class. Simple container of II and IF antenna functions. More...
class	AntGGEmitFF
	Class AntGQEmitFF, final-final antenna function. More...
class	AntGGEmitFFsec
class	AntGGEmitIF
	Class AntGGEmitIF, initial-final antenna function. More...
class	AntGGEmitIFsec
	Class AntGGEmitIFsec, sector initial-final antenna function. More...
class	AntGGEmitII
	Class AntGGEmitII, initial-initial antenna function. More...
class	AntGQEmitFF
	Class AntGQEmitFF, final-final antenna function. More...
class	AntGQEmitFFsec
class	AntGQEmitIF
	Class AntGQEmitIF, initial-final antenna function. More...
class	AntGQEmitII
	Class AntGQEmitII, initial-initial antenna function. More...
class	AntGXConvIF
class	AntGXConvII
class	AntGXSplitFF
	Class AntGXSplitFF, final-final antenna function. More...
class	AntGXSplitFFsec
class	AntQGEmitFF
	Class AntQGEmitFF, final-final antenna function. More...
class	AntQGEmitFFsec
class	AntQGEmitIF
	Class AntQGEmitIF, initial-final antenna function. More...
class	AntQGEmitIFsec
class	AntQGEmitRF
	Class AntQGEmitRF, resonance-final antenna function. More...
class	AntQGEmitRFsec
	Class AntQGEmitRF, resonance-final antenna function. More...
class	AntQQEmitFF
	Class AntQQEmitFF, final-final antenna function. More...
class	AntQQEmitFFsec
class	AntQQEmitIF
	Class AntQQEmitIF, initial-final antenna function. More...
class	AntQQEmitII
	Class AntQQEmitII, initial-initial antenna function. More...
class	AntQQEmitRF
	Class AntQQEmitRF, resonance-final antenna function. More...
class	AntQXConvIF
class	AntQXConvII
class	AntWrapper
	Class to contain an antenna function and two outgoing polarizations. More...
class	AntXGSplitIF
class	AntXGSplitIFsec
class	AntXGSplitRF
	Class AntXGSplitRF, resonance-final antenna function. More...
class	AntXGSplitRFsec
	Class AntXGSplitRF, resonance-final antenna function. More...
class	BeamDipole
	The BeamDipole class is purely internal to reconnectMPIs. More...
class	BeamParticle
class	BeamRemnants
class	BeamSetup
class	BeamShape
	Base class to set beam momentum and interaction spot spread. More...
class	BlackSubCollisionModel
class	BoseEinstein
class	BoseEinsteinHadron
	The BoseEinsteinHadron class is a simple container for studied hadrons. More...
class	BranchElementalISR
	The BranchElementalISR class, container for 2 -> 3 trial branchings. More...
class	Brancher
class	BrancherEmitFF
	Class BrancherEmitFF, branch elemental for 2->3 gluon emissions. More...
class	BrancherEmitRF
class	BrancherRF
	BrancherRF base class for resonance-final antennae. More...
class	BrancherSplitFF
	Class BrancherSplitFF, branch elemental for 2->3 gluon splittings. More...
class	BrancherSplitRF
class	CellJet
class	CJKL
class	Clustering
class	ClusterJet
class	ClusterModel
	A model for nuclei clustered in smaller nuclei. More...
class	ColConfig
	The ColConfig class describes the colour configuration of the whole event. More...
class	ColourDipole
class	ColourFlow
class	ColourJunction
class	ColourParticle
	ColourParticle class. More...
class	ColourReconnection
	The ColourReconnection class handles the colour reconnection. More...
class	ColourReconnectionBase
struct	ColourStructure
	Storage device for containing colour structure of hard process. More...
class	ColourTracing
	ColourTracing class. It is used to trace colours within the event record. More...
class	ColSinglet
class	ColState
	The ColState class. More...
class	CombineMatchingInput
class	CoupSM
class	CoupSUSY
class	create_unordered_map
class	createmap
class	createvector
class	CTEQ5L
class	CTEQ6pdf
class	DecayChannel
	This class holds info on a single decay channel. More...
class	DecayHandler
class	DeuteronProduction
	The DeuteronProduction class. More...
class	DGLAP
	A class containing DGLAP splitting functions for limit checking. More...
class	DipoleSwingBase
class	Dire
class	Dire_fsr_ew_H2AA
class	Dire_fsr_ew_H2GG
class	Dire_fsr_ew_H2WW
class	Dire_fsr_ew_Q2QZ
class	Dire_fsr_ew_Q2ZQ
class	Dire_fsr_ew_W2QQ1
class	Dire_fsr_ew_W2QQ2
class	Dire_fsr_ew_W2WA
class	Dire_fsr_ew_Z2QQ1
class	Dire_fsr_ew_Z2QQ2
class	Dire_fsr_qcd_G2GG1
class	Dire_fsr_qcd_G2GG2
class	Dire_fsr_qcd_G2GG_notPartial
class	Dire_fsr_qcd_G2GGG
class	Dire_fsr_qcd_G2Gqqbar
class	Dire_fsr_qcd_G2QQ1
class	Dire_fsr_qcd_G2QQ2
class	Dire_fsr_qcd_G2QQ_notPartial
class	Dire_fsr_qcd_Q2GQ
class	Dire_fsr_qcd_Q2QbarQQId
class	Dire_fsr_qcd_Q2QG
class	Dire_fsr_qcd_Q2QG_notPartial
class	Dire_fsr_qcd_Q2QGG
class	Dire_fsr_qcd_Q2Qqqbar
class	Dire_fsr_qcd_Q2qQqbarDist
class	Dire_fsr_qed_A2FF
class	Dire_fsr_qed_L2AL
class	Dire_fsr_qed_L2LA
class	Dire_fsr_qed_L2LA_notPartial
class	Dire_fsr_qed_Q2AQ
class	Dire_fsr_qed_Q2QA
class	Dire_fsr_qed_Q2QA_notPartial
class	Dire_fsr_u1new_A2FF
class	Dire_fsr_u1new_A2SS
class	Dire_fsr_u1new_L2AL
class	Dire_fsr_u1new_L2LA
class	Dire_fsr_u1new_Q2AQ
class	Dire_fsr_u1new_Q2QA
class	Dire_isr_ew_Q2QZ
class	Dire_isr_qcd_G2GG1
class	Dire_isr_qcd_G2GG2
class	Dire_isr_qcd_G2QQ
class	Dire_isr_qcd_Q2GQ
class	Dire_isr_qcd_Q2QbarQQId
class	Dire_isr_qcd_Q2QG
class	Dire_isr_qcd_Q2qQqbarDist
	Class inheriting from SplittingQCD class. More...
class	Dire_isr_qed_A2LL
class	Dire_isr_qed_A2QQ
class	Dire_isr_qed_L2AL
class	Dire_isr_qed_L2LA
class	Dire_isr_qed_Q2AQ
class	Dire_isr_qed_Q2QA
class	Dire_isr_u1new_A2LL
class	Dire_isr_u1new_A2QQ
class	Dire_isr_u1new_L2AL
class	Dire_isr_u1new_L2LA
class	Dire_isr_u1new_Q2AQ
class	Dire_isr_u1new_Q2QA
class	DireClustering
class	DireColChains
	Container for multiple color chains. More...
class	DireCouplFunction
	Helper class for setEffectiveScales. More...
class	DireDebugInfo
class	DireEventInfo
class	DireFunction
class	DireHardProcess
class	DireHistory
class	DireHooks
	Hooks is base class for user access to program execution. More...
class	DireInfo
class	DireMerging
class	DireMergingHooks
	DireMergingHooks is base class for user input to the merging procedure. More...
class	DirePSWeight
	Container for a single weight with auxiliary information. More...
class	DireRootFinder
class	DireSingleColChain
	Definition of color chains. More...
class	DireSpace
	The DireSpace class does spacelike showers. More...
class	DireSpaceEnd
	Data on radiating dipole ends, only used inside DireSpace. More...
class	DireSplitInfo
class	DireSplitKinematics
class	DireSplitParticle
class	DireSplitting
class	DireSplittingEW
class	DireSplittingLibrary
class	DireSplittingQCD
class	DireSplittingQED
class	DireSplittingU1new
class	DireTimes
	The DireTimes class does timelike showers. More...
class	DireTimesEnd
	Data on radiating dipole ends; only used inside DireTimes class. More...
class	DireWeightContainer
	Container for all shower weights, including handling. More...
class	DoubleStrikmanSubCollisionModel
class	DummyForStreams
	Dummy to avoid harmless compiler warning that Streams.o has no symbols. More...
class	EPAexternal
	Equivalent photon approximation for sampling with external photon flux. More...
class	EPPS16
	Nuclear modifications from EPPS16 fit. More...
class	EPS09
	Nuclear modifications from EPS09 fit. More...
class	Event
	The Event class holds all info on the generated event. More...
class	EventInfo
	Class for storing Events and Info objects. More...
struct	EvolutionWindow
	Helper struct for passing trial-alphaS information. More...
class	EvtGenDecays
class	EvtGenRandom
	A class to wrap the Pythia random number generator for use by EvtGen. More...
class	EWAntenna
	Base class for an electroweak antenna. More...
class	EWAntennaFF
	Final-final electroweak antenna. More...
class	EWAntennaFFres
	Final-final electroweak resonance antenna. More...
class	EWAntennaII
	Initial-initial electroweak antenna. More...
class	EWBranching
	Class that contains an electroweak branching. More...
class	EWParticle
	Simple class to save information about particles. More...
class	EWParticleData
	Locally saved particle data in glorified map. More...
class	EWSystem
	Class that performs electroweak showers in a single parton system. More...
struct	Exc
class	ExternalMEs
	Base class for external matrix-element interfaces. More...
class	ExternalMEsMadgraph
	External matrix element class specifically for MadGraph. More...
class	ExternalNucleusModel
class	Flag
	Class for bool flags. More...
class	FlavContainer
class	FlavourRope
class	FluctuatingSubCollisionModel
class	FragmentationModifierBase
class	FVec
	Class for vector of bool flags. More...
class	GammaKinematics
	Class to sample the virtuality and transverse momentum of emitted photons. More...
class	GammaMatrix
class	GammaPoint
	Gives photon parton distribution when unresolved. More...
class	GaussianModel
	A Gaussian distribution for light nuclei. More...
class	GLISSANDOModel
class	GRSpiL
class	GRV94L
class	GRVpiL
class	HadronLevel
class	HadronWidths
class	HardCoreModel
class	HardDiffraction
class	HardProcess
class	HardProcessParticle
class	HardProcessParticleList
	List of hard particles. More...
class	HeavyIons
class	HelicityMatrixElement
	The helicity matrix element class. More...
class	HelicityParticle
class	HelicitySampler
	A helicity sampler using external matrix elements. More...
class	HEPEUP
class	HEPRUP
class	HiddenValleyFragmentation
class	HIInfo
class	Hist
class	History
class	HistoryNode
	Class for a single step in the history of a process. More...
class	HistPlot
class	HIUserHooks
class	HJSlowJet
class	HMEGamma2TwoFermions
	Helicity matrix element for the hard process of photon -> two fermions. More...
class	HMEHiggs2TwoFermions
	Helicity matrix element for the decay of a Higgs -> two fermions. More...
class	HMETau2FivePions
	Helicity matrix element for a tau decaying into five pions. More...
class	HMETau2FourPions
	Helicity matrix element for a tau decay into four pions. More...
class	HMETau2Meson
	Helicity matrix element for a tau decaying into a single scalar meson. More...
class	HMETau2PhaseSpace
	Helicity matrix element for a tau decay into flat phase space. More...
class	HMETau2ThreeMesons
	Helicity matrix element for a tau decay into three mesons (base class). More...
class	HMETau2ThreeMesonsGeneric
	Helicity matrix element for a tau decay into generic three mesons. More...
class	HMETau2ThreeMesonsWithKaons
	Helicity matrix element for a tau decay into three mesons with kaons. More...
class	HMETau2ThreePions
	Helicity matrix element for a tau decay into three pions. More...
class	HMETau2TwoLeptons
	Helicity matrix element for a tau decaying into two leptons. More...
class	HMETau2TwoMesonsViaVector
class	HMETau2TwoMesonsViaVectorScalar
class	HMETau2TwoPionsGamma
	Helicity matrix element for a tau decay into two pions and a photon. More...
class	HMETauDecay
	Base class for all tau decay helicity matrix elements. More...
class	HMETwoFermions2GammaZ2TwoFermions
class	HMETwoFermions2W2TwoFermions
class	HMETwoGammas2TwoFermions
class	HMEW2TwoFermions
	Helicity matrix element for the hard process of W/W' -> two fermions. More...
class	HMEX2TwoFermions
	Helicity matrix element for the hard process of X -> two fermions. More...
class	HMEZ2TwoFermions
	Helicity matrix element for the hard process of Z/Z' -> two fermions. More...
class	HOShellModel
	A Harmonic-Oscillator Shell model for light nuclei. More...
class	HulthenModel
	The Hulthen potential for deuterons. More...
class	HungarianAlgorithm
class	HVcols
	The HVcols class stores Hidden Valley colours for HV-coloured particles. More...
class	HVStringFlav
	The HVStringFlav class is used to select HV-quark and HV-hadron flavours. More...
class	HVStringPT
	The HVStringPT class is used to select select HV transverse momenta. More...
class	HVStringZ
	The HVStringZ class is used to sample the HV fragmentation function f(z). More...
class	ImpactParameterGenerator
class	InBeam
	InBeam is a simple helper class for partons and their flux in a beam. More...
class	Info
class	InfoGluonMove
	The InfoGluonMove class is purely internal to reconnectMove. More...
class	InPair
	InPair is a simple helper class for colliding parton pairs and their flux. More...
class	Isospin
class	JetMatching
class	JetMatchingAlpgen
	Declaration of main UserHooks class to perform Alpgen matching. More...
class	JetMatchingAlpgenInputAlpgen
class	JetMatchingMadgraph
	Declaration of main UserHooks class to perform Madgraph matching. More...
class	JetMatchingMadgraphInputAlpgen
class	Junction
class	JunctionSplitting
class	Lepton
	Gives electron (or muon, or tau) parton distribution. More...
class	Lepton2gamma
class	LeptonPoint
	Gives electron (or other lepton) parton distribution when unresolved. More...
struct	LHAgenerator
	Collect generator information for an event file. More...
class	LHAGrid1
struct	LHAinitrwgt
	The LHAinitrwgt assigns a group-name to a set of LHAweightgroup objects. More...
class	LHAParticle
	A class for the particles stored in LHAup. More...
class	LHAPDF5
	Plugin interface to the LHAPDF5 library. More...
class	LHAPDF6
	Provide interface to the LHAPDF6 library of parton densities. More...
class	LHAProcess
	A class for the processes stored in LHAup. More...
struct	LHArwgt
	The LHArwgt assigns a group-name to a set of LHAwgt objects. More...
struct	LHAscales
	Collect different scales relevant for an event. More...
class	LHAup
class	LHAupAlpgen
class	LHAupFortran
class	LHAupFromPYTHIA8
	A derived class with information read from PYTHIA 8 itself, for output. More...
class	LHAupH5
class	LHAupH5v2
class	LHAupHelaconia
	A derived class from LHAup which generates events with HelacOnia. More...
class	LHAupLHEF
	A derived class with information read from a Les Houches Event File. More...
class	LHAupMadgraph
	A derived class from LHAup which generates events with MadGraph 5. More...
class	LHAupPowheg
struct	LHAweight
	Collect the wgt information. More...
struct	LHAweightgroup
	The LHAweightgroup assigns a group-name to a set of LHAweight objects. More...
struct	LHAweights
	The LHAweights struct represents the information in a weights tag. More...
struct	LHAwgt
	Collect the wgt information. More...
class	LHblock
	************************* SLHA AUX CLASSES *****************************/// More...
class	LHdecayChannel
	*************************** DECAY TABLES ***************************/// More...
class	LHdecayTable
class	LHEF3FromPythia8
class	LHgenericBlock
	Derived class for generic blocks containing vectors of strings. More...
class	LHmatrixBlock
class	LHtensor3Block
class	LinearInterpolator
class	Logger
class	LogInterpolator
class	LogNormalSubCollisionModel
class	LowEnergyProcess
class	MadgraphPar
class	MBReconUserHooks
	Class for colour reconnection models of general validity. More...
class	MECs
class	MergeResScaleHook
class	Merging
class	MergingHooks
	MergingHooks is base class for user input to the merging procedure. More...
class	MiniStringFragmentation
class	Mode
	Class for integer modes. More...
class	MSTWpdf
struct	MultiParticle
	Storage device for multiparticle. More...
class	MultipartonInteractions
class	MVec
	Class for vector of integers. More...
class	NaiveSubCollisionModel
class	NeutrinoPoint
class	nPDF
	A derived class for nuclear PDFs. Needs a pointer for (free) proton PDFs. More...
class	Nucleon
class	NucleonExcitations
class	Nucleus
class	Nucleus2gamma
class	NucleusModel
class	OniaSetup
class	OverheadInfo
class	OverlappingRopeDipole
class	Parm
	Class for double parms (where parm is shorthand for parameter). More...
class	Particle
class	ParticleData
	This class holds a map of all ParticleDataEntries. More...
class	ParticleDataEntry
	This class holds info on a single particle species. More...
class	ParticleDecays
	The ParticleDecays class contains the routines to decay a particle. More...
struct	ParticleLocator
class	PartonLevel
class	PartonSystem
class	PartonSystems
	The PartonSystems class describes the whole set of subcollisions. More...
class	PartonVertex
	The PartonVertex class sets parton-level vertex information. More...
class	PDF
	Base class for parton distribution functions. More...
class	PdfSets
	Containers for PDF sets. More...
class	PhaseSpace
class	PhaseSpace2to1tauy
	A derived class with 2 -> 1 kinematics set up in tau, y. More...
class	PhaseSpace2to2diffractive
	A derived class with 2 -> 2 kinematics set up for diffractive scattering. More...
class	PhaseSpace2to2elastic
	A derived class with 2 -> 2 kinematics set up for elastic scattering. More...
class	PhaseSpace2to2nondiffractive
class	PhaseSpace2to2tauyz
	A derived class with 2 -> 2 kinematics set up in tau, y, z = cos(theta). More...
class	PhaseSpace2to3diffractive
class	PhaseSpace2to3tauycyl
class	PhaseSpace2to3yyycyl
class	PhaseSpaceLHA
	A derived class for Les Houches events. More...
class	PhysicsBase
class	PomFix
	Gives generic Q2-independent Pomeron PDF. More...
class	PomH1FitAB
class	PomH1Jets
class	PomHISASD
	A proton masked as a Pomeron for use within the Heavy Ion machinery. More...
class	PowhegHooks
	Use userhooks to veto PYTHIA emissions above the POWHEG scale. More...
class	ProcessContainer
class	ProcessLevel
class	ProgressLog
class	Proton2gammaDZ
class	ProtonPoint
struct	PseudoChain
	Convenient shorthand for storing ordered list of chains. More...
class	PVec
	Class for vector of doubles. More...
class	Pythia
	The Pythia class contains the top-level routines to generate an event. More...
class	Pythia8Rivet
class	Pythia8ToHepMC
class	PythiaCascade
	Intended flow: More...
class	PythiaParallel
	Class for doing Pythia runs in parallel. More...
class	QEDconvSystem
	Class for a QED conversion system. More...
class	QEDemitElemental
	Class for QED emissions. More...
class	QEDemitSystem
	Class for a QED emission system. More...
class	QEDsplitElemental
	Class for trial QED splittings. More...
class	QEDsplitSystem
	Class for a QED splitting system. More...
class	QEDsystem
	Base class for QED systems. More...
class	Rambo
	Rambo flat phase-space generator. More...
class	Reader
struct	ResJunctionInfo
class	Resolution
	A simple class for containing evolution variable definitions. More...
class	ResolvedParton
class	ResonanceCha
	Charged partner of DM (PDG id 57.) More...
class	ResonanceChaD
	Doubly Charged partner of DM (PDG id 59.) More...
class	ResonanceChar
	The ResonanceChar class handles the Chargino resonances. More...
class	ResonanceDecayFilterHook
class	ResonanceDecays
class	ResonanceDM2
class	ResonanceExcited
	The ResonanceExcited class handles excited-fermion resonances. More...
class	ResonanceFour
	The ResonanceFour class handles fourth-generation resonances. More...
class	ResonanceGeneric
class	ResonanceGluino
	The ResonanceGluino class handles the Gluino resonances. More...
class	ResonanceGmZ
	The ResonanceGmZ class handles the gamma*/Z0 resonance. More...
class	ResonanceGraviton
	The ResonanceGraviton class handles the excited Graviton resonance. More...
class	ResonanceH
class	ResonanceHchg
	The ResonanceHchg class handles the H+- resonance. More...
class	ResonanceHchgchgLeft
	The ResonanceHchgchgLeft class handles the H++/H– (left) resonance. More...
class	ResonanceHchgchgRight
	The ResonanceHchgchgRight class handles the H++/H– (right) resonance. More...
class	ResonanceKKgluon
	The ResonanceKKgluon class handles the g^*/KK-gluon^* resonance. More...
class	ResonanceLeptoquark
	The ResonanceLeptoquark class handles the LQ/LQbar resonance. More...
class	ResonanceNeut
	The ResonanceNeut class handles the Neutralino resonances. More...
class	ResonanceNuRight
	The ResonanceNuRight class handles righthanded Majorana neutrinos. More...
class	ResonanceRhorizontal
	The ResonanceRhorizontal class handles the R^0 resonance. More...
class	ResonanceS
	The ResonanceS class. (S a.k.a. DMmed(s=0), PDG id 54.) More...
class	ResonanceSl
	Charged scalar partner of DM (PDG id 56.) More...
class	ResonanceSlepton
	The ResonanceSlepton class handles the Slepton/Sneutrino resonances. More...
class	ResonanceSquark
	The ResonanceSquark class handles the Squark resonances. More...
class	ResonanceTop
	The ResonanceTop class handles the top/antitop resonance. More...
class	ResonanceW
	The ResonanceW class handles the W+- resonance. More...
class	ResonanceWidths
	The ResonanceWidths is the base class. Also used for generic resonaces. More...
class	ResonanceWprime
	The ResonanceWprime class handles the W'+- resonance. More...
class	ResonanceWRight
	The ResonanceWRight class handles the W_R+- resonance. More...
class	ResonanceZp
	The ResonanceZp class. (Zp a.k.a. DMmed(s=1), PDG id 55.) More...
class	ResonanceZprime
	The ResonanceZprime class handles the gamma*/Z0 /Z'^0 resonance. More...
class	ResonanceZRight
	The ResonanceZRight class handles the Z_R^0 resonance. More...
class	RHadrons
class	Rndm
class	RndmEngine
struct	RndmState
class	RopeDipole
class	RopeDipoleEnd
class	RopeFragPars
class	Ropewalk
class	RopewalkShover
	Interface to RopeWalk via an ShoverBase object. More...
class	RotBstMatrix
class	SetLHEDecayProductHook
class	Settings
class	SetupContainers
class	ShowerModel
class	Sigma0AB2AB
	A derived class for elastic scattering A B -> A B. More...
class	Sigma0AB2AX
	A derived class for single diffractive scattering A B -> A X. More...
class	Sigma0AB2AXB
	A derived class for central diffractive scattering A B -> A X B. More...
class	Sigma0AB2XB
	A derived class for single diffractive scattering A B -> X B. More...
class	Sigma0AB2XX
	A derived class for double diffractive scattering A B -> X X. More...
class	Sigma0nonDiffractive
	A derived class for minimum-bias (inelastic, nondiffractive) events. More...
class	Sigma0Process
class	Sigma1ffbar2gmZ
	A derived class for f fbar -> gamma*/Z0. More...
class	Sigma1ffbar2gmZZprime
	A derived class for f fbar -> gamma*/Z0/Z'0. More...
class	Sigma1ffbar2GravitonStar
	A derived class for f fbar -> G^* (excited graviton state). More...
class	Sigma1ffbar2H
	A derived class for f fbar -> H0 (SM), H1, H2 or A3 (BSM). More...
class	Sigma1ffbar2Hchg
	A derived class for f fbar' -> H+-. More...
class	Sigma1ffbar2Rhorizontal
	A derived class for f fbar' -> R^0 (horizontal gauge boson). More...
class	Sigma1ffbar2W
	A derived class for f fbar' -> W+-. More...
class	Sigma1ffbar2Wprime
	A derived class for f fbar' -> W'+-. More...
class	Sigma1ffbar2WRight
	A derived class for f fbar' -> W_R^+- (righthanded gauge boson). More...
class	Sigma1ffbar2Zp2XX
	A derived class for f fbar' -> Zprime -> X X. (Zprime a.k.a. DMmed(s=1).) More...
class	Sigma1ffbar2ZRight
	A derived class for f fbar -> Z_R^0 (righthanded gauge boson). More...
class	Sigma1ffbar2Zv
class	Sigma1ffbarZprimeWprime
class	Sigma1gg2GravitonStar
	A derived class for g g -> G^* (excited graviton state). More...
class	Sigma1gg2H
	A derived class for g g -> H0 (SM), H1, H2 or A3 (BSM). More...
class	Sigma1gg2S2XX
class	Sigma1gmgm2H
	A derived class for gamma gamma -> H0 (SM Higgs), H1, H2 or A3 (BSM Higgs). More...
class	Sigma1lgm2lStar
	A derived class for l gamma -> l^* (excited lepton state). More...
class	Sigma1ll2Hchgchg
	A derived class for l l -> H_L^++– or H_R^++– (doubly charged Higgs). More...
class	Sigma1Process
class	Sigma1qg2qStar
	A derived class for q g -> q^* (excited quark state). More...
class	Sigma1ql2LeptoQuark
	A derived class for q l -> LQ (leptoquark). More...
class	Sigma1qq2antisquark
class	Sigma1qqbar2KKgluonStar
	A derived class for q qbar -> g^*/KK-gluon^* (excited kk-gluon state). More...
class	Sigma2ff2fftgmZ
	A derived class for f f' -> f f' via t-channel gamma*/Z0 exchange. More...
class	Sigma2ff2fftW
	A derived class for f_1 f_2 -> f_3 f_4 via t-channel W+- exchange. More...
class	Sigma2ffbar2A3H12
	A derived class for f fbar -> A0(H_3) h0(H_1) or A0(H_3) H0(H_2). More...
class	Sigma2ffbar2ffbarsgm
class	Sigma2ffbar2ffbarsgmZ
	A derived class for f fbar -> gamma*/Z0 -> f' fbar', summed over light f. More...
class	Sigma2ffbar2FFbarsgmZ
class	Sigma2ffbar2ffbarsW
	A derived class for f_1 fbar_2 -> W+- -> f_3 fbar_4, summed over light f. More...
class	Sigma2ffbar2FfbarsW
class	Sigma2ffbar2fGfGbar
class	Sigma2ffbar2gammagamma
	A derived class for f fbar -> gamma gamma. More...
class	Sigma2ffbar2gmZgm
	A derived class for f fbar' -> gamma*/Z0 gamma. More...
class	Sigma2ffbar2gmZgmZ
	A derived class for f fbar -> gamma*/Z0 gamma*/Z0. More...
class	Sigma2ffbar2HchgchgHchgchg
	A derived class for f fbar -> H_(L/R)^++ H_(L/R)^– (doubly charged Higgs). More...
class	Sigma2ffbar2HchgH12
	A derived class for f fbar -> H+- h0(H_1) or H+- H0(H_2). More...
class	Sigma2ffbar2HposHneg
	A derived class for f fbar -> H+ H-. More...
class	Sigma2ffbar2HW
class	Sigma2ffbar2HZ
class	Sigma2ffbar2LEDgammagamma
class	Sigma2ffbar2LEDllbar
class	Sigma2ffbar2LEDUnparticlegamma
class	Sigma2ffbar2LEDUnparticleZ
class	Sigma2ffbar2TEVffbar
class	Sigma2ffbar2Wgm
	A derived class for f fbar' -> W+- gamma. More...
class	Sigma2ffbar2WW
	A derived class for f fbar -> W+ W-. More...
class	Sigma2ffbar2ZpH
	A derived class for f fbar' -> Zprime H, Zprime -> X X. More...
class	Sigma2ffbar2ZW
	A derived class for f fbar' -> Z0 W+-. (Here pure Z0, unfortunately.) More...
class	Sigma2ffbargmZggm
	An intermediate class for f fbar -> gamma*/Z0 g/gamma and permutations. More...
class	Sigma2ffbargmZWgmZW
	An intermediate class for f fbar -> gamma*/Z0/W+- gamma*/Z0/W-+. More...
class	Sigma2ffbarWggm
	An intermediate class for f fbar -> W+- g/gamma and permutations. More...
class	Sigma2fgm2gmZf
	A derived class for f gamma -> gamma*/Z0 f. More...
class	Sigma2fgm2Wf
	A derived class for f gamma -> W+- f'. More...
class	Sigma2gg2gammagamma
	A derived class for g g -> gamma gamma. More...
class	Sigma2gg2gg
	A derived class for g g -> g g. More...
class	Sigma2gg2ggamma
	A derived class for g g -> g gamma. More...
class	Sigma2gg2gluinogluino
	A derived class for g g -> gluino gluino. More...
class	Sigma2gg2GravitonStarg
	A derived class for g g -> G^* g (excited graviton state). More...
class	Sigma2gg2Hglt
class	Sigma2gg2LEDgammagamma
class	Sigma2gg2LEDgg
	A derived class for g g -> (LED G*) -> g g. More...
class	Sigma2gg2LEDllbar
class	Sigma2gg2LEDqqbar
	A derived class for g g -> (LED G*) -> q qbar. More...
class	Sigma2gg2LEDUnparticleg
class	Sigma2gg2LQLQbar
	A derived class for g g -> LQ LQbar (leptoquark). More...
class	Sigma2gg2qGqGbar
	A derived class for g g -> qG qGbar (generic quark of spin 0, 1/2 or 1). More...
class	Sigma2gg2qqbar
	A derived class for g g -> q qbar (q = u, d, s, i.e. almost massless). More...
class	Sigma2gg2QQbar
	A derived class for g g -> Q Qbar (Q = c, b or t). More...
class	Sigma2gg2QQbar3DJ1g
	A derived class for g g -> QQbar[3DJ(1)] g (Q = c or b). More...
class	Sigma2gg2QQbar3PJ1g
	A derived class for g g -> QQbar[3PJ(1)] g (Q = c or b, J = 0, 1 or 2). More...
class	Sigma2gg2QQbar3S11g
	A derived class for g g -> QQbar[3S1(1)] g (Q = c or b). More...
class	Sigma2gg2QQbar3S11gm
	A derived class for g g -> QQbar[3S1(1)] gamma (Q = c or b). More...
class	Sigma2gg2QQbar3S11QQbar3S11
	A derived class for g g -> QQbar[3S1(1)] QQbar[3S1(1)] (Q = c or b). More...
class	Sigma2gg2QQbarX8g
	A derived class for g g -> QQbar[X(8)] g (Q = c or b, X = 3S1, 1S0 or 3PJ). More...
class	Sigma2gg2Sg2XXj
class	Sigma2gg2squarkantisquark
	A derived class for g g -> ~q ~q*. More...
class	Sigma2ggm2qqbar
	A derived class for g gamma -> q qbar (q = u, d, s, c, b). More...
class	Sigma2gmgm2ffbar
	A derived class for gamma gamma -> f fbar. More...
class	Sigma2lgm2Hchgchgl
	A derived class for l- gamma -> H_(L/R)^– l+ (doubly charged Higgs). More...
class	Sigma2Process
class	Sigma2QCffbar2llbar
class	Sigma2QCqq2qq
class	Sigma2QCqqbar2qqbar
class	Sigma2qg2charsquark
	A derived class for q g -> chargino_i squark_j (incl cc) More...
class	Sigma2qg2chi0squark
	A derived class for q g -> neutralino_i squark_j (and cc) More...
class	Sigma2qg2gmZq
	A derived class for q g -> gamma*/Z0 q. More...
class	Sigma2qg2GravitonStarq
	A derived class for q g -> G^* q (excited graviton state). More...
class	Sigma2qg2Hchgq
	A derived class for q g -> H+- q'. More...
class	Sigma2qg2Hq
class	Sigma2qg2Hqlt
class	Sigma2qg2LEDqg
class	Sigma2qg2LEDUnparticleq
class	Sigma2qg2LeptoQuarkl
	A derived class for q g -> LQ l (leptoquark). More...
class	Sigma2qg2qg
class	Sigma2qg2qgamma
class	Sigma2qg2QQbar3PJ1q
	A derived class for q g -> QQbar[3PJ(1)] q (Q = c or b, J = 0, 1 or 2). More...
class	Sigma2qg2QQbarX8q
	A derived class for q g -> QQbar[X(8)] q (Q = c or b, X = 3S1, 1S0 or 3PJ). More...
class	Sigma2qg2Sq2XXj
class	Sigma2qg2squarkgluino
	A derived class for q g -> ~q ~g. More...
class	Sigma2qg2Wq
	A derived class for q g -> W+- q'. More...
class	Sigma2qg2Zpq2XXj
class	Sigma2qgm2qg
class	Sigma2qgm2qgm
class	Sigma2qq2LEDqq
	A derived class for q q(bar)' -> (LED G*) -> q q(bar)'. More...
class	Sigma2qq2qq
class	Sigma2qq2QqtW
class	Sigma2qq2qStarq
	A derived class for q q' -> q^* q' (excited quark state). More...
class	Sigma2qq2squarksquark
	A derived class for q q' -> ~q_i ~q_j. More...
class	Sigma2qqbar2charchar
	A derived class for q qbar -> chargino+_i chargino-_j. More...
class	Sigma2qqbar2charchi0
	A derived class for q qbar -> neutralino_i chargino_j. More...
class	Sigma2qqbar2chargluino
	A derived class for q qbar -> neutralino_i chargino_j. More...
class	Sigma2qqbar2chi0chi0
	A derived class for q qbar -> neutralino_i neutralino_j. More...
class	Sigma2qqbar2chi0gluino
	A derived class for q qbar -> neutralino_i gluino. More...
class	Sigma2qqbar2DY
class	Sigma2qqbar2gg
	A derived class for q qbar -> g g. More...
class	Sigma2qqbar2ggamma
	A derived class for q qbar -> g gamma. More...
class	Sigma2qqbar2gluinogluino
	A derived class for q qbar -> gluino gluino. More...
class	Sigma2qqbar2gmZg
	A derived class for q qbar -> gamma*/Z0 g. More...
class	Sigma2qqbar2GravitonStarg
	A derived class for q qbar -> G^* g (excited graviton state). More...
class	Sigma2qqbar2Hglt
class	Sigma2qqbar2LEDgg
	A derived class for q qbar -> (LED G*) -> g g. More...
class	Sigma2qqbar2LEDqqbarNew
	A derived class for q qbar -> (LED G*) -> q' qbar'. More...
class	Sigma2qqbar2LEDUnparticleg
class	Sigma2qqbar2LQLQbar
	A derived class for q qbar -> LQ LQbar (leptoquark). More...
class	Sigma2qqbar2lStarlbar
	A derived class for q qbar -> l^* lbar (excited lepton state). More...
class	Sigma2qqbar2lStarlStarBar
class	Sigma2qqbar2qGqGbar
	A derived class for q qbar -> qG qGbar (generic quark of spin 0, 1/2 or 1). More...
class	Sigma2qqbar2QQbar
	A derived class for q qbar -> Q Qbar (Q = c, b or t). More...
class	Sigma2qqbar2QQbar3PJ1g
	A derived class for q qbar -> QQbar[3PJ(1)] g (Q = c or b, J = 0, 1 or 2). More...
class	Sigma2qqbar2QQbar3S11QQbar3S11
	A derived class for q qbar -> QQbar[3S1(1)] QQbar[3S1(1)] (Q = c or b). More...
class	Sigma2qqbar2qqbarNew
	A derived class for q qbar -> q' qbar'. More...
class	Sigma2qqbar2QQbarX8g
class	Sigma2qqbar2sleptonantislepton
	A derived class for q qbar' -> ~q_i ~q*_j. More...
class	Sigma2qqbar2squarkantisquark
	A derived class for q qbar' -> ~q_i ~q*_j. More...
class	Sigma2qqbar2Wg
	A derived class for q qbar' -> W+- g. More...
class	Sigma2qqbar2Zpg2XXj
class	Sigma2SUSY
	An intermediate class for SUSY 2 -> 2 with nontrivial decay angles. More...
class	Sigma3ff2HchgchgfftWW
	A derived class for f_1 f_2 -> H_(L/R)^++– f_3 f_4 (W+- W+- fusion). More...
class	Sigma3ff2HfftWW
class	Sigma3ff2HfftZZ
class	Sigma3gg2ggg
	A derived class for g g -> g g g. More...
class	Sigma3gg2HQQbar
class	Sigma3gg2qqbarg
class	Sigma3Process
class	Sigma3qg2qgg
class	Sigma3qg2qqqbarDiff
class	Sigma3qg2qqqbarSame
class	Sigma3qq2qqgDiff
	A derived class for q q' -> q q' g. More...
class	Sigma3qq2qqgSame
	A derived class for q q -> q q g. More...
class	Sigma3qqbar2ggg
	A derived class for q qbar -> g g g. More...
class	Sigma3qqbar2HQQbar
class	Sigma3qqbar2qqbargDiff
class	Sigma3qqbar2qqbargSame
class	SigmaABMST
class	SigmaCombined
class	SigmaLHAProcess
class	SigmaLowEnergy
	Gets cross sections for hadron-hadron collisions at low energies. More...
class	SigmaMBR
class	SigmaMultiparton
class	SigmaOniaSetup
	A helper class used to setup the onia processes. More...
class	SigmaProcess
	SigmaProcess is the base class for cross section calculations. More...
class	SigmaRPP
class	SigmaSaSDL
class	SigmaTotal
class	SigmaTotAux
class	SigmaTotOwn
class	SimpleShowerModel
class	SimpleSpaceShower
	The SimpleSpaceShower class does spacelike showers. More...
class	SimpleTimeShower
	The SimpleTimeShower class does timelike showers. More...
class	SimpleWeakShowerMEs
class	SingleCell
class	SingleCellJet
class	SingleClusterJet
class	SingleSlowJet
class	SLHAinterface
class	SlowJet
class	SlowJetHook
class	SpaceDipoleEnd
	Data on radiating dipole ends, only used inside SimpleSpaceShower. More...
class	SpaceShower
	The SpaceShower class does spacelike showers. More...
class	Sphericity
class	Split2g2QQbar1S01g
class	Split2g2QQbar3PJ1g
class	Split2g2QQbar3S11gg
class	Split2g2QQbarX8
	Splitting class for g -> QQbar[X(8)] (Q = c or b). More...
class	Split2Q2QQbar1P11Q
class	Split2Q2QQbar1S01Q
class	Split2Q2QQbar3PJ1Q
class	Split2Q2QQbar3PJ8Q
class	Split2Q2QQbar3S11Q
class	Split2QQbarXg82QQbarX8g
class	Split2QQbarXq82QQbarX8g
class	SplitOnia
class	SplitOniaSetup
class	StauWidths
	Class StauWidths. More...
class	StringBreaks
class	StringEnd
class	StringFlav
	The StringFlav class is used to select quark and hadron flavours. More...
class	StringFragmentation
class	StringInteractions
class	StringLength
	StringLength class. It is used to calculate the lambda measure. More...
class	StringPT
	The StringPT class is used to select select transverse momenta. More...
class	StringRegion
class	StringRepulsionBase
class	StringSystem
class	StringVertex
class	StringZ
	The StringZ class is used to sample the fragmentation function f(z). More...
class	SubCollision
class	SubCollisionModel
class	SubCollisionSet
	The SubCollisionSet gives a set of subcollisions between two nuclei. More...
class	SuppressSmallPT
class	SusyLesHouches
class	SUSYResonanceWidths
class	TauDecays
class	Thrust
class	TimeDipoleEnd
	Data on radiating dipole ends; only used inside SimpleTimeShower class. More...
class	TimeShower
	The TimeShower class does timelike showers. More...
class	TopReconUserHooks
	Class for colour reconnection models specifically aimed at top decays. More...
class	TrialGenerator
	Base class for trial generators. More...
class	TrialGeneratorFF
	Trial generator for final-final branchings. More...
class	TrialGeneratorIF
	Trial generator for initial-final branchings. More...
class	TrialGeneratorII
	Trial generator for initial-initial branchings. More...
class	TrialGeneratorISR
class	TrialGeneratorRF
	Trial generator for resonance-final branchings. More...
class	TrialIFConvA
	A conversion trial function for initial-final, g -> qqbar. More...
class	TrialIFGCollA
	A gluon collinear trial function for initial-final. More...
class	TrialIFGCollK
	K gluon collinear trial function for initial-final sector shower. More...
class	TrialIFSoft
	Soft-eikonal trial function for initial-final. More...
class	TrialIFSplitA
	A splitting trial function for initial-final, q -> gqbar. More...
class	TrialIFSplitK
	K splitting trial function for initial-final, g -> qqbar. More...
class	TrialIIConvA
	A conversion trial function for initial-initial, g -> qqbar. More...
class	TrialIIConvB
	B conversion trial function for initial-initial, g -> qqbar. More...
class	TrialIIGCollA
	A collinear trial function for initial-initial. More...
class	TrialIIGCollB
	B collinear trial function for initial-initial. More...
class	TrialIISoft
class	TrialIISplitA
	A splitting trial function for initial-initial, q -> gqbar. More...
class	TrialIISplitB
	B splitting trial function for initial-initial, q -> gqbar. More...
class	TrialReconnection
	TrialReconnection class. More...
class	TrialVFSoft
class	UserHooks
	UserHooks is base class for user access to program execution. More...
class	UserHooksVector
	UserHooksVector implements a vector of UserHooks and is itself a UserHooks. More...
class	Vec4
class	Vincia
struct	VinciaClustering
	Simple struct to store information about a 3 -> 2 clustering. More...
class	VinciaColour
class	VinciaCommon
class	VinciaDiagnostics
	Vincia diagnostics. More...
class	VinciaEW
	Top-level class for the electroweak shower module. More...
class	VinciaEWVetoHook
	Class to do the veto for overlapping QCD/EW shower phase space. More...
class	VinciaFSR
class	VinciaHardProcess
	Container for the hard process used in Vincia merging. More...
class	VinciaHistory
	History class for the Vincia shower. More...
class	VinciaISR
class	VinciaMerging
	Merging wrapper class for Vincia. More...
class	VinciaMergingHooks
	Class for Vincia to perform merging. More...
class	VinciaModule
	Base class for Vincia's QED and EW shower modules. More...
class	VinciaQED
	Class for performing QED showers. More...
class	VinciaWeights
	Class for storing Vincia weights. More...
class	Wave4
class	WeightContainer
class	WeightsBase
class	WeightsFragmentation
class	WeightsLHEF
class	WeightsMerging
class	WeightsShower
	Purely virtual base class for shower weights. More...
class	WeightsSimpleShower
	This shows a WeightsShower example implementation for SimpleShower. More...
class	WidthFunction
class	WoodsSaxonModel
	A general Woods-Saxon distributed nucleus. More...
class	Word
	Class for string words. More...
class	Writer
class	WVec
	Class for vector of strings. More...
struct	xfModPrepData
struct	XMLTag
class	ZetaGenerator
	Base class for zeta trial generators. More...
class	ZetaGeneratorSet
class	ZGenFFEmitColI
	The final-final ColI sector emission generator. More...
class	ZGenFFEmitColK
	The final-final ColK sector emission generator. More...
class	ZGenFFEmitSoft
	Final-final trial generators. More...
class	ZGenFFSplit
	The final-final default sector splitting generator. More...
class	ZGenIFConv
	The initial-final splitting generator. More...
class	ZGenIFEmitColA
	The initial-final ColI sector generator. More...
class	ZGenIFEmitColK
	The initial-final ColK sector generator. More...
class	ZGenIFEmitSoft
	Intial-final trial generators. More...
class	ZGenIFSplitA
	The initial-final initial antenna splitting generator. More...
class	ZGenIFSplitK
	The initial-final final antenna splitting generator. More...
class	ZGenIIConv
	The initial-initial splitting generator. More...
class	ZGenIIEmitCol
	The initial-initial ColI sector generator. More...
class	ZGenIIEmitSoft
	The initial-initial trial generators. More...
class	ZGenIISplit
	The initial-initial initial splitting generator. More...
class	ZGenRFEmitColK
	The resonance-final ColK sector generator. More...
class	ZGenRFEmitSoft
	Resonance-final trial generators. More...
class	ZGenRFEmitSoftAlt
	The resonance-final default sector alternate generator. More...
class	ZGenRFSplit
	The resonance-final default sector splitting generator. More...

Typedefs
typedef unsigned long	ulong
typedef std::complex< double >	complex
	Convenient typedef for double precision complex numbers.
typedef shared_ptr< BeamShape >	BeamShapePtr
typedef shared_ptr< Brancher >	BrancherPtr
typedef shared_ptr< ColourDipole >	ColourDipolePtr
typedef shared_ptr< ColourReconnectionBase >	ColRecPtr
typedef shared_ptr< DecayHandler >	DecayHandlerPtr
typedef shared_ptr< DipoleSwingBase >	DipSwingPtr
typedef shared_ptr< ExternalMEs >	ExternalMEsPtr
typedef shared_ptr< FragmentationModifierBase >	FragModPtr
typedef shared_ptr< HeavyIons >	HeavyIonsPtr
typedef shared_ptr< HIUserHooks >	HIUserHooksPtr
typedef shared_ptr< LHAup >	LHAupPtr
typedef shared_ptr< LHEF3FromPythia8 >	LHEF3FromPythia8Ptr
typedef shared_ptr< Merging >	MergingPtr
typedef shared_ptr< MergingHooks >	MergingHooksPtr
typedef shared_ptr< PartonVertex >	PartonVertexPtr
typedef shared_ptr< ParticleDataEntry >	ParticleDataEntryPtr
typedef shared_ptr< PDF >	PDFPtr
typedef shared_ptr< PhaseSpace >	PhaseSpacePtr
typedef shared_ptr< ResonanceWidths >	ResonanceWidthsPtr
typedef shared_ptr< RndmEngine >	RndmEnginePtr
typedef shared_ptr< ShowerModel >	ShowerModelPtr
typedef shared_ptr< SigmaProcess >	SigmaProcessPtr
typedef shared_ptr< SpaceShower >	SpaceShowerPtr
typedef shared_ptr< SplitOnia >	SplitOniaPtr
typedef shared_ptr< StringInteractions >	StringIntPtr
typedef shared_ptr< StringRepulsionBase >	StringRepPtr
typedef shared_ptr< TimeShower >	TimeShowerPtr
typedef shared_ptr< UserHooks >	UserHooksPtr
typedef shared_ptr< VinciaModule >	VinciaModulePtr
typedef shared_ptr< ZetaGenerator >	ZetaGeneratorPtr
typedef CoupSM	Couplings
	Backwards compatability for MG5ME plugin interface with Pythia.
typedef std::ifstream	igzstream
typedef std::ofstream	ogzstream
typedef unsigned int	uint
	Convenient typedef for unsigned integers.
typedef map< int, vector< HistoryNode > >	HistoryNodes
typedef pair< int, int >	pairInt
	Useful definitions for a pair of integers and a vector of pairs. More...
typedef vector< pairInt >	vectorPairInt

Enumerations
enum	AntFunType {   NoFun, QQEmitFF, QGEmitFF, GQEmitFF,   GGEmitFF, GXSplitFF, QQEmitRF, QGEmitRF,   XGSplitRF, QQEmitII, GQEmitII, GGEmitII,   QXConvII, GXConvII, QQEmitIF, QGEmitIF,   GQEmitIF, GGEmitIF, QXConvIF, GXConvIF,   XGSplitIF }
	Enumerator for antenna function types, with "void" member NoFun.
enum	TrialGenType {   Void = 0, FF = 1, RF = 2, IF = 3,   II = 4 }
	Helpful enums.
enum	BranchType {   Void = -1, Emit = 0, SplitF = 1, SplitI = 2,   Conv = 3 }
	(Default is used for soft, global, or splittings as appropriate.)
enum	Sector { Void = -99, ColI = -1, Default = 0, ColK = 1 }

Functions
double	dist2Fun (int measure, const SingleClusterJet &j1, const SingleClusterJet &j2)
	Namespace function declarations; friend of SingleClusterJet. More...
Vec4	operator* (double f, const Vec4 &v1)
	Namespace function declarations; friends of Vec4 class. More...
double	m (const Vec4 &v1)
	Invariant mass and its square. More...
double	m (const Vec4 &v1, const Vec4 &v2)
double	m2 (const Vec4 &v1)
	The squared invariant mass of one or more four-vectors.
double	m2 (const Vec4 &v1, const Vec4 &v2)
double	m2 (const Vec4 &v1, const Vec4 &v2, const Vec4 &v3)
double	m2 (const Vec4 &v1, const Vec4 &v2, const Vec4 &v3, const Vec4 &v4)
double	dot3 (const Vec4 &v1, const Vec4 &v2)
	Scalar and cross product of 3-vector parts. More...
Vec4	cross3 (const Vec4 &v1, const Vec4 &v2)
	The cross product of two three-vectors.
Vec4	cross4 (const Vec4 &a, const Vec4 &b, const Vec4 &c)
	Cross-product of three 4-vectors ( p_i = epsilon_{iabc} p_a p_b p_c). More...
double	theta (const Vec4 &v1, const Vec4 &v2)
	theta is polar angle between v1 and v2. More...
double	costheta (const Vec4 &v1, const Vec4 &v2)
	Cosine of the opening angle between two three-vectors.
double	costheta (double e1, double e2, double m1, double m2, double s12)
	Cosine of the opening angle between two particles.
double	phi (const Vec4 &v1, const Vec4 &v2)
	phi is azimuthal angle between v1 and v2 around z axis. More...
double	cosphi (const Vec4 &v1, const Vec4 &v2)
	Cosine of the azimuthal angle between two three-vectors.
double	phi (const Vec4 &v1, const Vec4 &v2, const Vec4 &n)
	phi is azimuthal angle between v1 and v2 around n axis. More...
double	cosphi (const Vec4 &v1, const Vec4 &v2, const Vec4 &n)
	Cosine of the azimuthal angle between two three-vectors around a third.
double	RRapPhi (const Vec4 &v1, const Vec4 &v2)
	R is distance in cylindrical (y/eta, phi) coordinates. More...
double	REtaPhi (const Vec4 &v1, const Vec4 &v2)
	Distance in cylindrical (eta, phi) coordinates.
ostream &	operator<< (ostream &, const Vec4 &v)
	Print a four-vector. More...
bool	pShift (Vec4 &p1Move, Vec4 &p2Move, double m1New, double m2New)
	Shift four-momenta within pair from old to new masses. More...
pair< Vec4, Vec4 >	getTwoPerpendicular (const Vec4 &v1, const Vec4 &v2)
	Create two vectors that are perpendicular to both input vectors. More...
ostream &	operator<< (ostream &, const RotBstMatrix &)
	Namespace function declaration; friend of RotBstMatrix class. More...
RotBstMatrix	toCMframe (const Vec4 &p)
	Get a RotBstMatrix to rest frame of p.
RotBstMatrix	fromCMframe (const Vec4 &p)
	Get a RotBstMatrix from rest frame of p.
RotBstMatrix	toCMframe (const Vec4 &p1, const Vec4 &p2)
RotBstMatrix	fromCMframe (const Vec4 &p1, const Vec4 &p2, bool flip=false)
RotBstMatrix	toCMframe (const Vec4 &ptot, const Vec4 &pz, const Vec4 &pxz)
RotBstMatrix	fromCMframe (const Vec4 &ptot, const Vec4 &pz, const Vec4 &pxz)
ostream &	operator<< (ostream &os, const Hist &h)
	Namespace function declarations; friends of Hist class. More...
void	table (const Hist &h1, const Hist &h2, ostream &os=cout, bool printOverUnder=false, bool xMidBin=true)
	Print a table out of two histograms with same x axis. More...
void	table (const Hist &h1, const Hist &h2, string fileName, bool printOverUnder=false, bool xMidBin=true)
Hist	operator+ (double f, const Hist &h1)
	Operator overloading with friends. More...
Hist	operator- (double f, const Hist &h1)
Hist	operator* (double f, const Hist &h1)
Hist	operator/ (double f, const Hist &h1)
bool	operator< (const ColourDipolePtr &d1, const ColourDipolePtr &d2)
	Comparison operator by index for two dipole pointers.
bool	checkSIJ (const Event &e, double minSIJ=0.0)
void	printSI (const Event &e)
void	printSIJ (const Event &e)
ulong	shash (const string &str)
	Function to hash string into long integer.
double	polev (double x, double *coef, int N)
	Helper function to calculate dilogarithm.
double	dilog (double x)
	Function to calculate dilogarithm.
double	lABC (double a, double b, double c)
	Kallen function and derived quantities.
double	bABC (double a, double b, double c)
double	gABC (double a, double b, double c)
double	m (const Particle &pp1, const Particle &pp2)
double	m2 (const Particle &pp1, const Particle &pp2)
double	m2 (const Particle &pp1, const Particle &pp2, const Particle &pp3)
double	dot4 (const Particle &pp1, const Particle &pp2)
double	LundFFRaw (double z, double a, double b, double c, double mT2)
	Functions for unnormalised and average Lund FF. More...
double	LundFFAvg (double a, double b, double c, double mT2, double tol=1.e-6)
	Average, <z>, of Lund FF. More...
Wave4	operator* (complex s, const Wave4 &w)
	Namespace function declarations; friends of Wave4 class. More...
Wave4	operator* (double s, const Wave4 &w)
	double * Wave4.
Wave4	conj (Wave4 w)
	Complex conjugate.
Wave4	epsilon (Wave4 w1, Wave4 w2, Wave4 w3)
	Permutation operator.
double	m2 (Wave4 w)
	Invariant squared mass for REAL Wave4 (to save time).
double	m2 (Wave4 w1, Wave4 w2)
ostream &	operator<< (ostream &os, Wave4 w)
	Print a Wave4 vector. More...
Wave4	operator* (Wave4 w, GammaMatrix g)
	Namespace function declarations; friends of GammaMatrix class. More...
GammaMatrix	operator* (complex s, GammaMatrix g)
	Scalar * GammaMatrix.
GammaMatrix	operator- (complex s, GammaMatrix g)
	I * Scalar - Gamma5.
GammaMatrix	operator+ (complex s, GammaMatrix g)
	I * Scalar + Gamma5.
ostream &	operator<< (ostream &os, GammaMatrix g)
	Print GammaMatrix. More...
double	gammaReal (double x)
	The Gamma function for real argument. More...
double	besselI0 (double x)
	Modified Bessel functions of the first and second kinds. More...
double	besselI1 (double x)
double	besselK0 (double x)
double	besselK1 (double x)
bool	integrateGauss (double &resultOut, function< double(double)> f, double xLo, double xHi, double tol=1e-6)
	Integrate f(x) dx over the specified range. More...
bool	brent (double &solutionOut, function< double(double)> f, double target, double xLo, double xHi, double tol=1e-6, int maxIter=10000)
	Solve f(x) = target for x in the specified range. More...
double	gramDet (double s01tilde, double s12tilde, double s02tilde, double m0, double m1, double m2)
	Gram determinant, invariants used in the argument = 2*pi*pj.
double	gramDet (Vec4 p0, Vec4 p1, Vec4 p2)
double	Li2 (const double, const double kmax=100.0, const double xerr=1e-9)
	Dilogarithm.
double	factorial (const int)
	Standard factorial.
int	binomial (const int, int)
	Binomial coefficient.
double	lambertW (const double x)
	Lambert W function. More...
double	kallenFunction (const double x, const double y, const double z)
	Kallen function. More...
vector< double >	linSpace (int nPts, double xMin, double xMax)
	Generate linearly or logarithmically spaced points. More...
vector< double >	logSpace (int nPts, double xMin, double xMax)
	Generate logarithmically spaced points.
string	demangle (string name)
	Demangle a symbol name, if the necessary demangling libraries are present. More...
string	type_plugin (string libName, string className, Logger *loggerPtr=nullptr)
	Determine a plugin type. More...
shared_ptr< void >	dlopen_plugin (string libName, Logger *loggerPtr)
	Load a plugin library with dlopen. More...
template<typename T >
function< T >	dlsym_plugin (void *libPtr, string symbol)
	Load a symbol from a plugin library.
template<typename T >
function< T >	dlsym_plugin (shared_ptr< void > libPtr, string symbol)
template<typename T >
shared_ptr< T >	make_plugin (string libName, string className, Pythia *pythiaPtr, Settings *settingsPtr, Logger *loggerPtr)
	Load a plugin, given a full set of arguments. More...
template<typename T >
shared_ptr< T >	make_plugin (string libName, string className)
	Load a plugin, given no pointers.
template<typename T >
shared_ptr< T >	make_plugin (string libName, string className, Pythia *pythiaPtr)
	Load a plugin, given a Pythia pointer.
template<typename T >
shared_ptr< T >	make_plugin (string libName, string className, Pythia *pythiaPtr, const vector< string > &cmnds)
	Load a plugin, given a Pythia pointer and command vector pointer.
template<typename T >
shared_ptr< T >	make_plugin (string libName, string className, Pythia *pythiaPtr, string fileName, int subrun=SUBRUNDEFAULT)
	Load a plugin, given a Pythia pointer, command file, and subrun.
constexpr double	pow2 (const double &x)
	Powers of small integers - for balance speed/code clarity.
constexpr double	pow3 (const double &x)
constexpr double	pow4 (const double &x)
constexpr double	pow5 (const double &x)
constexpr double	pow6 (const double &x)
constexpr double	pow7 (const double &x)
constexpr double	pow8 (const double &x)
double	sqrtpos (const double &x)
	Avoid problem with negative square root argument (from roundoff).
double	sqrtnan (const double &x)
	Explicitly return NaN if negative square root argument, without FPE.
double	clamp (const double &x, const double &xmin, const double &xmax)
	Restrinct value to lie in specified range.
string	toLower (const string &name, bool trim=true)
void	toLowerRep (string &name, bool trim=true)
	Variant of above, with in-place replacement.
string	toString (bool val)
	Convert a boolean to a string.
string	toString (int val)
	Convert an integer to a string.
string	toString (double val)
	Convert a double to a string. More...
std::string	methodName (const std::string &prettyFunction, bool withNamespace=false)
	end PYTHIA_FUNCTION More...
void	printOut (string, string, int nPad=0, char padChar='-')
	end METHOD_NAME More...
string	num2str (int, int width=4)
	String utilities. More...
string	num2str (double, int width=9)
string	bool2str (bool, int width=3)
string	replaceString (string subject, const string &search, const string &replace)
	Search and replace a string.
string	sanitizeFileName (string fileName)
	Remove ":" and "/" from a file name.
bool	fileExists (const std::string &name)
	Utility for checking if a file exists.
void	initpdfsetm_ (int &, const char *, int)
	Interfaces to to make the C++ calls similar to f77. More...
void	initpdfsetbynamem_ (int &, const char *, int)
void	initpdfm_ (int &, int &)
void	evolvepdfm_ (int &, double &, double &, double *)
void	evolvepdfpm_ (int &, double &, double &, double &, double &, double *)
void	evolvepdfphotonm_ (int &, double &, double &, double *, double &)
void	setlhaparm_ (const char *, int)
void	getxminm_ (int &, int &, double &)
void	getxmaxm_ (int &, int &, double &)
void	getq2minm_ (int &, int &, double &)
void	getq2maxm_ (int &, int &, double &)
void	pwhginit_ ()
	Initialize Powheg.
void	resetcnt_ (const char *string, int length)
	Reset the counters.
void	pwhgevent_ ()
	Generate an event.
double	powheginput_ (const char *string, int length)
	Access Powheg input data.
void	powhegSettings (Settings *settingsPtr)
	Register POWHEG settings.
string	py_status (int stAbs)
void	makeArrow (map< pair< string, string >, string > *arrows, string identParent, string identChild)
void	printEvent (Event &evt, string fileName="event")
bool	cmpTrials (const TrialReconnection &j1, const TrialReconnection &j2)
	Simple comparison function for sort.
bool	sortFunc (ColourDipolePtr a, ColourDipolePtr b)
	More...
ulong	shash (const std::string &str)
	Function to hash string into long integer.
string	stringFlavs (const Event &event)
void	listFlavs (const Event &event, bool includeEndl=false)
bool	validEvent (const Event &event)
	The Merging class. More...
bool	operator== (const DireTimesEnd &dip1, const DireTimesEnd &dip2)
	The DireTimesEnd class.
vectorPairInt	findParentSystems (const int sys, Event &event, PartonSystems *partonSystemsPtr, bool forwards)
	Z0 (f is quark or lepton).*/ void Sigma1ffbar2gmZ
	Initialize process. More...
complex	ampLedS (double x, double n, double L, double M)
double	funLedG (double x, double y)
	Common method, "Mandelstam polynomial", for LED dijet processes.
Z0	Z (f is quark or lepton).*/ void Sigma1ffbar2gmZZprime
	Initialize process. More...

Variables
constexpr double	HBARC = 0.19732698
	Define conversion hbar * c = 0.2 GeV * fm = 1 and related.
constexpr double	GEV2FMINV = 1. / HBARC
constexpr double	GEVINV2FM = HBARC
constexpr double	FM2GEVINV = 1./HBARC
constexpr double	FMINV2GEV = HBARC
constexpr double	HBARCSQ = 0.38937937
	Define conversion (hbar * c)^2 = 0.4 GeV^2 * mb = 1 and related.
constexpr double	GEVSQ2MBINV = 1. / HBARCSQ
constexpr double	GEVSQINV2MB = HBARCSQ
constexpr double	MB2GEVSQINV = 1. / HBARCSQ
constexpr double	MBINV2GEVSQ = HBARCSQ
constexpr double	FM2MM = 1e-12
	Define conversion between fm and mm, in both directions.
constexpr double	MM2FM = 1e12
constexpr double	MB2PB = 1e9
	Define conversion between mb and pb or fb, in both directions.
constexpr double	PB2MB = 1e-9
constexpr double	MB2FB = 1e12
constexpr double	FB2MB = 1e-12
constexpr double	FMSQ2MB = 10.
	Define conversion between fm^2 and mb, in both directions.
constexpr double	MB2FMSQ = 0.1
Z0 F	Fbar
struct {
int   idbmup [2]
double   ebmup [2]
int   pdfgup [2]
int   pdfsup [2]
int   idwtup
int   nprup
double   xsecup [100]
double   xerrup [100]
double   xmaxup [100]
int   lprup [100]
}	heprup_
	Give access to the HEPRUP and HEPEUP Fortran commonblocks.
struct {
int   nup
int   idprup
double   xwgtup
double   scalup
double   aqedup
double   aqcdup
int   idup [500]
int   istup [500]
int   mothup [500][2]
int   icolup [500][2]
double   pup [500][5]
double   vtimup [500]
double   spinup [500]
}	hepeup_
struct {
int   rnd_numseeds
int   rnd_initialseed
int   rnd_iwhichseed
char   rnd_cwhichseed [4]
int   rnd_i1
int   rnd_i2
}	pwhg_rnd_
	Give access to the POWHEG commonblocks and subroutines. More...
struct {
double   u [97]
double   c
int   i97
int   j97
}	r48st1_
	The RANMAR (R48 modification) common block.
const double	DYAC []
	Constants for printout: fixed steps on y scale; filling characters. More...
const char	NUMBER []
double	chgprefac = 0.0
double	GammaCoef [9]
Z0 f	fbar
Z0 *Unique	complication

Detailed Description

Header for classes to set beam momentum and interaction vertex spread.

Function definitions (not found in the header) for the Weight classes.

Function definitions (not found in the header) for the VinciaWeights class.

This file is written by Helen Brooks, Christian T Preuss.

Authors: Helen Brooks, Christian T Preuss.

Include the Vincia headers.

Function definitions (not found in the headers) for the Vincia class.

Function definitions (not found in the header) for the UserHooks class.

Function definitions (not found in the header) for the TauDecays class.

Calculate the lambda measure for string and junctions.

Function definitions (not found in the header) for the AlphaStrong class.

Function definitions for fragmentation functions for onia showers.

Function definitions (not found in the header) for the Settings class.

Function definitions (not found in the header) for the RHadrons class.

Function definitions (not found in the header) for.

Function definitions (not found in the header) for the Pythia class.

Function definitions (not found in the header) for the ProcessLevel class.

Function definitions (not found in the header) for plugin manipulation.

Function definitions (not found in the header) for the PhysicsBase class.

Function definitions (not found in the header) for the PartonVertex class.

Function definitions (not found in the header) for the PartonLevel class.

Allow string and character manipulation.

Function definitions (not found in the header) for NucleonExcitations class.

Internal headers for special processes.

Function definitions (not found in the header) for some mathematical tools.

Function definitions (not found in the header) for the Logger class.

Function definitions (not found in the header) for the Info class.

Author: Christine O. Rasmussen.

Function definitions (not found in the header) for the HadronWidths class.

Function definitions (not found in the header) for the HadronLevel class.

Virtual interface for external matrix element plugins for parton showers.

Function definitions (not found in the header) for the DireSpace class.

Function definitions (not found in the header) for Dire merging classes.

Function definitions (not found in the header) used for Dire merging.

Function definitions (not found in the header) for Dire history classes.

Function definitions (not found in the header) for Dire basics.

Setup the list of colours, this is needed later for finding colour chains.

Function definitions (not found in the header) for the BoseEinsten class.

Function definitions (not found in the header) for the BeamShape class.

Function definitions (not found in the header) for the BeamSetup class.

Access time information.

Set the version of HepMC being used (either from Rivet or set above).

This file contains the LHAPDF6 PDF plugin class.

This file contains the LHAPDF5 PDF plugin class.

Author: Philip Ilten, December 2015.

Author: Philip Ilten, December 2017.

Interface includes.

end namespace HepMC3

end namespace HepMC

This file contains an EvtGen interface. HepMC and EvtGen must be enabled.

Includes and namespace.

Includes.

This file contains classes that keep track of event weights.

This file contains header information for the VinciaWeights class.

This file was authored by Helen Brooks, Christian T Preuss.

PYTHIA 8 headers.

Header file for the VinciaDiagnostics class.

Everything else lives in the Pythia 8 namespace.

Pythia headers.

This file contains global header information for Vincia.

Header file for the TauDecays class.

Header file for setup of common SUSY couplings.

Header file for fragmentation functions for onia showers.

Header file for cross sections for of energy hadron-hadron collisions.

end namespace Pythia8

Header file for typedef'd double precision complex numbers.

Header files for the Pythia class and for what else the user may need.

Header file for the runtime loading of plugins.

This file contains the base class for physics classes used inside Pyhia8.

Header file for vertex information during the parton-level evolution.

Header file for some mathematics tools, like special functions.

Header file for low-energy hadronic collisions, as used for rescattering.

This file contains the Logger class for diagnostic messages.

This file contains the classes for Hidden-Valley fragmentation.

Header file for a number of physics classes used in tau decays.

Header file for a number of helper classes used in tau decays.

Author: Christine Rasmussen.

Header file for computing mass-dependent widths and branching ratios.

Header file for kinematics selection of photons from lepton beams.

Include Pythia headers.

Header file for Dire user hooks.

Header file for Dire history classes.

DIRE includes.

Analysis.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the Sphericity, Thrust, ClusterJet and CellJet classes. Sphericity: sphericity analysis of the event. Thrust: thrust analysis of the event. ClusterJet: clustering jet finder. CellJet: calorimetric cone jet finder. SlowJet: recombination algorithm; lightweight version of FastJet.

Basics.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for basic, often-used helper classes. RndmEngine: base class for external random number generators. Rndm: random number generator. Vec4: simple four-vectors. RotBstMatrix: matrices encoding rotations and boosts of Vec4 objects. Hist: simple one-dimensional histograms.

BeamParticle.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for information on incoming beams. ResolvedParton: an initiator or remnant in beam. BeamParticle: contains partons, parton densities, etc.

BeamRemnants.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for beam-remnants handling. BeamRemnants: matches the remnants between the two beams.

BeamSetup.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains a helper class for the setup of beam flavour, kinematics and PDFs.

BeamShape.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Bose-Einstein.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the classes to handle Bose-Einstein effects. BoseEinsteinHadron: simple working container for particle momenta. BoseEinstein: main class to perform the task.

ColourReconnection.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the Colour reconnection handling. Reconnect the colours between the partons before hadronization. It Contains the following classes: ColourDipole, ColourParticle, ColourJunction, ColourReconnection.

ColourTracing.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the class ColurTracing. ColourTracing traces colour lines in the event record.

DeuteronProduction.h is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Pythia includes.

DireHistory.h is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

DireHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Event.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the Particle and Event classes. Particle: information on an instance of a particle. Junction: information on a junction between three colours. Event: list of particles in the current event.

ExternalMEs.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Stefan Prestel, Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the functionality to interface external matrix elements for matrix element corrections to parton showers.

FragmentationFlavZpT.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains helper classes for fragmentation. StringFlav is used to select quark and hadron flavours. StringPT is used to select transverse momenta. StringZ is used to sample the fragmentation function f(z).

FragmentationSystems.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains auxiliary classes in the fragmentation process. ColSinglet contains info on an individual singlet. ColConfig describes the colour configuration of the whole event. StringRegion keeps track on string momenta and directions. StringSystem contains all the StringRegions of the colour singlet. StringVertex contains information on space-time location of string breaks.

GammaKinematics.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HadronLevel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the main class for hadron-level generation. HadronLevel: handles administration of fragmentation and decay.

HadronWidths.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HardDiffraction.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Header file for the HardDiffraction class.

HeavyIons.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the definition of the HeavyIons class which Provides Pythia with infrastructure to combine several nucleon collisions into a single heavy ion collision event. This file also includes the definition of the Angantyr class which implements the default model for heavy ion collisions in Pythia.

HelicityBasics.h is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HelicityMatrixElements.h is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HIBasics.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the definition of the EventInfo and HIUserHooks classes, as well as the HIUnits namespace.

EventInfo: stores full nucleon-nucleon events with corresponding Info. HIUserHooks: User hooks for HeavyIons models.

HiddenValleyFragmentation.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HIInfo.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the definition of the HIInfo, EventInfo and HIUserHooks classes, as well as the HIUnits namespace.

EventInfo: stores full nucleon-nucleon events with corresponding Info. HIInfo: info about a Heavy Ion run and its produced events. HIUserHooks: User hooks for HeavyIons models.

HINucleusModel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the definition of the HIUserHooks class and a set of other classes used inside Pythia8 to model collisions involving heavy ions. Nucleon: represents a proton or a neutron inside a necleus. NucleusModel: models the Nucleon distribution in a nucleus. WoodsSaxonModel: NucleusModel implementing a simple Woods-Saxon. GLISSANDOModel: NucleusModel implementing the GLISSANDO prescription.

History.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. It contains the main class for matrix element merging. Header file for the Clustering and History classes.

HISubCollisionModel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the definition of the ImpactParmeterGenerator, SubCollision, and SubCollisionModel classes, as well as a set of subclasses of SubCollisionModel.

ImpactParameterGenerator: distributes nuclei in impact parameter space. SubCollision: a collision between a projectile and a target Nucleon. SubCollisionModel: Models the collision probabilities of nucleons. BlackSubCollisionModel: A very simple SubCollisionModel. NaiveSubCollisionModel: A very simple SubCollisionModel. DoubleStrikmanSubCollisionModel: A more advanced SubCollisionModel.

Info.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains classes that keep track of generic event info. Info: contains information on the generation process and errors. Info: user interface to make parts of Info publicly available.

JunctionSplitting.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the class JunctionSplitting. JunctionSplitting takes an event and seperate junction chains from each other, such that no junctions are colour connected to each other.

LesHouches.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for Les Houches Accord user process information. LHAProcess: stores a single process; used by the other classes. LHAParticle: stores a single particle; used by the other classes. LHAup: base class for initialization and event information. LHAupLHEF: derived class for reading from an Les Houches Event File. Code for interfacing with Fortran commonblocks is found in LHAFortran.h.

LHEF3.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. The code evolved from a LHEF 2.0 reader supplied by Leif Lonnblad. LHEF3.h contains the main class for LHEF 3.0 functionalities. Header file.

Logger.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

LowEnergyProcess.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

MathTools.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Header file for the MathTools methods.

Merging.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. Merging: Wrapper class to interface matrix element merging schemes with Pythia

MergingHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. Header file to allow user access to program at different stages. HardProcess: Container class for the hard process to be merged. Holds the bookkeeping of particles not be be reclustered MergingHooks: Steering class for matrix element merging. Some functions can be redefined in a derived class to have access to the merging

MiniStringFragmentation.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the class for "cluster" fragmentation. MiniStringFragmentation: handle the fragmentation of low-mass systems.

MultipartonInteractions.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the main classes for multiparton interactions physics. SigmaMultiparton stores allowed processes by in-flavour combination. MultipartonInteractions: generates multiparton parton-parton interactions.

NucleonExcitations.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

ParticleData.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the classes containing particle data. DecayChannel contains info on a single decay channel. ParticleDataEntry contains info on a single particle species. ParticleData collects info on all particles as a map.

ParticleDecays.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the classes to perform a particle decay. DecayHandler: base class for external handling of decays. ParticleDecays: decay a particle.

PartonDistributions.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header files for parton densities. PDF: base class. LHAGrid1: internal read and use files in the LHAPDF6 lhagrid1 format. GRV94L: GRV 94L parton densities. CTEQ5L: CTEQ 5L parton densities. MSTWpdf: MRST LO*, LO**, MSTW 2008 LO, NLO. CTEQ6pdf: CTEQ 6L, 6L1, 66, CT09 MC1, MC2, MCS. ProtonPoint: unresolved proton with equivalent photon spectrum. GRVpiL: GRV LO pion parton densities. PomFix: Q2-independent Pomeron parton densities. PomH1FitAB: H1 2006 Fit A and Fit B Pomeron PDFs. PomH1Jets: H1 2007 Jets Pomeron PDFs. PomHISASD: a proton masked as a Pomeron for heavy ions applications. Lepton: parton densities inside a lepton. LeptonPoint: an unresolved lepton (mainly dummy). NeutrinoPoint: an unresolved neutrino (mainly dummy). CJKL: CJKL parton densities for photons. Lepton2gamma: convolution of photon flux from leptons and photon PDFs. PhotonPoint: an unresolved photon. Proton2gammaDZ: Photon flux from protons according to Drees-Zeppenfeld. Nucleus2gamma: Photon flux from heavy nuclei. EPAexternal: approximated photon flux used for sampling of external flux. nPDF: a nuclear PDF, derived from a proton ditto. Isospin: isospin modification for nuclear pDF EPS09, EPPS16: nuclear modification factors.

PartonLevel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the main class for parton-level event generation PartonLevel: administrates showers, multiparton interactions and remnants.

PartonSystems.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains auxiliary classes for the parton-level processes. PartonSystem contains info on a single partonic subcollision. PartonSystems describes the set of subcollisions in the whole event.

PartonVertex.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

PhaseSpace.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for phase space generators in kinematics selection. PhaseSpace: base class for phase space generators. Base class for derived classes> 2 ->1 , 2 -> 2, 2 -> 2 elastic/diffractive, 2 -> 2 nondiffractive, 2 -> 3, Les Houches.

PhysicsBase.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Still to convert: BeamParticle BeamShape

Plugins.h is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Manuel Szewc, and Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Allow the use of dlopen without warnings for some GCC versions.

ProcessContainer.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the collected machinery of a process. ProcessContainer: contains information on a particular process. SetupContainers: administrates the selection/creation of processes.

ProcessLevel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the main class for process-level event generation. ProcessLevel: administrates the selection of "hard" process.

PythiaComplex.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Stdlib header for complex numbers.

PythiaParallel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Marius Utheim, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Set floating point exceptions from the gcc compiler for debug purposes. Use the compilation flag -DGCCFPDEBUG to enable. By this declaration you do not need to use std:: qualifier everywhere. using namespace std; Alternatively you can specify exactly which std:: methods will be used. Now made default so std does not spill outside namespace Pythia8.

ResonanceDecays.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the main class for performing resonance decays. ResonanceDecays: handles the sequential decay of resonances in process.

ResonanceWidths.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for resonance properties: dynamical widths etc. ResonanceWidths: base class for all resonances. ResonanceGmZ, ...: derived classes for individual resonances.

ResonanceWidthsDM.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for DM resonance properties: dynamical widths etc. ResonanceS, ResonanceZp, ResonanceS1, ResonanceCha, ResonanceDM2, ResonanceChaD: derived classes for individual resonances.

RHadrons.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains a class for the production and decay of long-lived heavy coloured particles, for now the gluino.

Ropewalk.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for Rope Hadronization. The Ropewalk takes care of setting up string geometry and calculating overlaps etc. The RopeDipole classes take care of the dynamics of string shoving. Flavour-composition-changing ropes are handled by FlavourRope which changes parameters, and RopeFragPars which calculates parameters for the rope.

The file contains the following classes: RopeDipoleEnd, OverlappingRopeDipole, RopeDipole, Ropewalk, RopeFragPars and FlavourRope.

Settings.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the settings database. Flag: helper class with bool flags. Mode: helper class with int modes. Parm: (short for parameter) helper class with double parameters. Word: helper class with string words. FVec: vector of Flags (bools). MVec: vector of Modes (integers). PVec: vector of Parms (doubles). WVec: vector of Words (strings). Settings: maps of flags, modes, parms and words with input/output.

SharedPointers.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header files for forward declaring of some common Pythia classes and typedefs for shared pointers to these.

ShowerModel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the classes involved in the modelling of parton showers. A ShowerModel object is supposed to keep track of and give Pythia access to objects implementing space-like and time-like showers (also separately in resonance decays). Pointers related to the matrix-element merging may be overwritten in the derived classes. The SimpleShowerModel implements the default Pythia behavior with SimpleTimeShower and SimpleSpaceShower.

SigmaCompositeness.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for compositiness-process differential cross sections. Contains classes derived from SigmaProcess via Sigma(1/2)Process.

SigmaDM.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for Dark Matter process differential cross sections. Contains classes derived from SigmaProcess.

SigmaEW.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for electroweak process differential cross sections. Contains classes derived from SigmaProcess via Sigma(1/2)Process.

SigmaExtraDim.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Stefan Ask for the LED routines. Header file for extra-dimensional-process differential cross sections. Contains classes derived from SigmaProcess via Sigma(1/2)Process.

SigmaGeneric.h is a part of the PYTHIA event generator. Copyright (C) 2024 Johan Bijnens,Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for various generic production processes, to be used as building blocks for some BSM processes. Currently represented by QCD pair production of colour triplet objects, with spin either 0, 1/2 or 1.

SigmaHiggs.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Part of code written by Marc Montull, CERN summer student 2007. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for Higgs process differential cross sections. Contains classes derived from SigmaProcess via Sigma2Process.

SigmaLeftRightSym.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for left-rights-symmetry differential cross sections. Contains classes derived from SigmaProcess via Sigma(1/2/3)Process.

SigmaLeptoquark.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for leptoquark-process differential cross sections. Contains classes derived from SigmaProcess via Sigma(1/2)Process. Note: since leptoquark assumed scalar no need for decay-angles routines.

SigmaLowEnergy.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

SigmaNewGaugeBosons.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for new-gauge-boson-process differential cross sections. Contains classes derived from SigmaProcess via Sigma1Process.

SigmaOnia.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for charmonia/bottomonia process differential cross sections. Contains classes derived from SigmaProcess via Sigma2Process.

SigmaProcess.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for hard-process differential cross sections. SigmaProcess: base class for cross sections. Sigma0Process: base class for unresolved processes, derived from above. Sigma1Process: base class for 2 -> 1 processes, derived from above. Sigma2Process: base class for 2 -> 2 processes, derived from above. Sigma3Process: base class for 2 -> 3 processes, derived from above. SigmaLHAProcess: wrapper class for Les Houches Accord external input. Actual physics processes are found in separate files: SigmaQCD for QCD processes; SigmaEW for electroweak processes (including photon production); SigmaOnia for charmonium and bottomonium processes; SigmaHiggs for Higgs processes; SigmaSUSY for supersymmetric production; SigmaLeftRightSym for processes in left-right-symmetric scenarios; SigmaLeptoquark for leptoquark production. SigmaExtraDim for processes in scenarios for extra dimensions; SigmaGeneric for generic scalar/fermion/vector pair production.

SigmaQCD.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for QCD process differential cross sections. Contains classes derived from SigmaProcess via Sigma(0/2)Process.

SigmaSUSY.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for Supersymmetric process differential cross sections. Contains classes derived from SigmaProcess via Sigma2Process.

SigmaTotal.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains classes for cross section parametrizations. SigmaTotAux : base class for the different parametrizations. SigmaTotal : top-level class, making use of the classes below. SigmaTotOwn : user-set values. SigmaSaSDL : Schuler and Sjostrand, based on Donnachie and Landshoff. SigmaMBR : Min Bias Rockefeller. SigmaABMST : Appleby, Barlow, Molson, Serluca and Toader. SigmaRPP : Review of Particle Physics 2014.

SimpleSpaceShower.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the original simple spacelike initial-state showers. SpaceDipoleEnd: data on a radiating dipole end in ISR. SimpleSpaceShower: handles the showering description.

SimpleTimeShower.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the original simple timelike final-state showers. TimeDipoleEnd: data on a radiating dipole end in FSR. SimpleTimeShower: handles the showering description.

SimpleWeakShowerMEs.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the class containg matrix elements needed for W/Z emission corrections in both the initial and final state shower. SimpleWeakShowerMEs: contains the matrix elements.

SLHAinterface.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for SUSY Les Houches Accord Interface. Handles the communication between PYTHIA and the SusyLesHouches classes.

SpaceShower.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the base class of spacelike initial-state showers. SpaceShower: handles the showering description.

SplittingsOnia.h is a part of the PYTHIA event generator. Copyright (C) 2024 Naomi Cooke, Philip Ilten, Leif Lonnblad, Steve Mrenna, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

StandardModel.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file gives access to some Standard Model parameters. AlphaStrong: fix or first-, second- or third-order running alpha_strong.

Streams.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Classes to implement reading from or writing to gzipped files. Adapted for Sherpa by Frank Siegert from: gzstream, C++ iostream classes wrapping the zlib compression library. Copyright (C) 2024 Deepak Bandyopadhyay, Lutz Kettner (http:///www.cs.unc.edu/Research/compgeom/gzstream). Further adapted to PYTHIA by Stefan Prestel.

StringFragmentation.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the classes for string fragmentation. StringEnd: keeps track of the fragmentation step. StringFragmentation: is the top-level class.

StringInteraction.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the classes involved in the modelling interactions between strings. This includes standard colour reconnections, perturbative swing, string shoving and rope hadronisation. The StringInterations base class is an interface to all of these, and can be used both during and after PartonLevel, as well as before, during and after string fragmentation.

StringLength.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the class StringLength. It is used to calculate the lambda measure of strings and junctions.

SusyCouplings.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

SusyLesHouches.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for SUSY Les Houches Accord functionality This part of the SLHA interface basically contains the Pythia-independent SLHA read/write and processing utilities, which would be common to any SLHA interface. (The Pythia-specific components reside in the SLHAinterface class.)

SusyResonanceWidths.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand Main author of this file: N. Desai PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for SUSY resonance properties: dynamical widths etc. SusyResonanceWidths: base class for all SUSY resonances.

SusyResonanceWidths.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand Main author of this file: N. Desai PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for resonance properties: dynamical widths etc. WidthFunctions: base class for SUSY 3-body decay width functions.

TauDecays.h is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

TimeShower.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for the base class of timelike final-state showers. TimeShower: handles the showering description.

UserHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file to allow user access to program at different stages. UserHooks: almost empty base class, with user to write the rela code. MyUserHooks: derived class, only intended as an example.

Vincia.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Maths headers. Include Pythia 8 headers. Include Vincia headers. Define namespace inside which Vincia lives.

VinciaAntennaFunctions.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains header information for the AntennaFunction base class, its derived classes for FF, IF, and II antenna functions, the AntennaSetFSR and AntennaSetISR classes, and the MEC class for matrix- element corrections.Vincia headers.

VinciaDiagnostics.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

VinciaEW.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the EW antenna-shower class and auxiliary classes. Main author is Rob Verheyen.VINCIA functionality.

VinciaFSR.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains header information for the VinciaFSR class for QCD final-state antenna showers, and auxiliary classes.

VinciaHistory.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Authors: Helen Brooks, Christian T Preuss This file contains the VinciaHistory class.

VinciaISR.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains header information for the VinciaISR class for QCD initial-state antenna showers (II and IF), and auxiliary classes.

VinciaMerging.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Authors: Helen Brooks, Christian T Preuss This file contains the VinciaMerging class.

VinciaMergingHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand, Peter Skands. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUidELINES for details.

VinciaQED.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the QED antenna-shower class and auxiliary classes. Main author is Rob Verheyen.VINCIA headers.

VinciaTrialGenerators.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Vincia headers.

VinciaWeights.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Weights.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

aMCatNLOHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This program is written by Stefan Prestel. It illustrates how to do run PYTHIA with LHEF input, allowing a sample-by-sample generation of a) Non-matched/non-merged events b) MLM jet-matched events (kT-MLM, shower-kT, FxFx) c) CKKW-L and UMEPS-merged events d) UNLOPS NLO merged events see the respective sections in the online manual for details.

ColourReconnectionHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains two UserHooks that, along with the internal models, implement all the models used for the top mass study in S. Argyropoulos and T. Sjostrand, arXiv:1407.6653 [hep-ph] (LU TP 14-23, DESY 14-134, MCnet-14-15) MBReconUserHooks: can be used for all kinds of events, not only top ones. TopReconUserHooks: models intended specifically for top decay products, whereas the underlying event is handled by the default model. Warning: some small modifications have been made when collecting the models, but nothing intended to change the behaviour. Note: the move model is also available with ColourReconnection:mode = 2, while the ColourReconnection:mode = 1 model has not been used here. Note: the new models tend to be slower than the default CR scenario, since they have to probe many more reconnection possibilities.

CombineMatchingInput.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the following classes: JetMatchingAlpgenInputAlpgen: combines Alpgen-style MLM matching with Alpgen native format event input. JetMatchingMadgraphInputAlpgen: combines Madgraph-style MLM matching with Alpgen native format event input. CombineMatchingInput: invokes Alpgen- or Madgraphs-style MLM matching for Madgraph LHEF or Alpgen native format event input.

EvtGen.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Philip Ilten.

ExternalMEsMadgraph.h is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Stefan Prestel, Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file contains the Madgraph parton shower ME plugin class which interfaces with matrix elements generated with the PY8Kernels/MG5MES plugin to MadGraph 5.Include Madgraph PY8MEs plugin headers.

GeneratorInput.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Primary Author: Richard Corke Secondary Author: Stephen Mrenna This file provides the following classes: AlpgenPar: a class for parsing ALPGEN parameter files and reading back out the values LHAupAlpgen: an LHAup derived class for reading in ALPGEN format event files AlpgenHooks: a UserHooks derived class for providing 'Alpgen:*' user options MadgraphPar: a class for parsing MadGraph parameter files and reading back out the values Example usage is shown in main32.cc, and further details can be found in the 'Jet Matching Style' manual page. Minor changes were made by the secondary author for integration with Madgraph-style matching, and Madgraph input was added.

JetMatching.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Authors: Richard Corke (implementation of MLM matching as in Alpgen for Alpgen input) and Stephen Mrenna (implementation of MLM-style matching as in Madgraph for Alpgen or Madgraph 5 input.) and Simon de Visscher, Stefan Prestel (implementation of shower-kT MLM-style matching and flavour treatment for Madgraph input) and Stefan Prestel (FxFx NLO jet matching with aMC.) This file provides the classes to perform MLM matching of Alpgen or MadGraph 5 input. Example usage is shown in main32.cc, and further details can be found in the 'Jet Matching Style' manual page.

LHAFortran.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Header file for Fortran Les Houches Accord user process information. LHAupFortran: derived class with the HEPRUP and HEPEUP Fortran info. You are expected to create a derived class that supplies the fillHepRup and fillHepEup methods (and returns true when successful).

LHAHDF5.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Christian Preuss, January 2021.Generator includes.

LHAHDF5v2.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Authors: Christian Preuss, Stefan Hoeche December 2023.Generator includes.

LHAHelaconia.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

LHAMadgraph.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

LHAPDF5.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

LHAPDF6.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

LHAPowheg.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Philip Ilten, May 2015.

PowhegHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Richard Corke, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Richard Corke, modified by Christian T Preuss. This class is used to perform a vetoed shower, where emissions already covered in a POWHEG NLO generator should be omitted. To first approximation the handover should happen at the SCALE of the LHA, but since the POWHEG-BOX uses a different pT definition than PYTHIA, both for ISR and FSR, a more sophisticated treatment is needed. See the online manual on POWHEG matching for details.

ProgressLog.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

PythiaCascade.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Torbjorn Sjostrand.

ResonanceDecayFilterHook.h is part of the PYTHIA event generator. Copyright (C) 2024 Stephen Mrenna, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Stephen Mrenna, January 2021. This class is used to filter out resonance decay products to obtain a desired parton-level final state. It copies an implementation already in the CMS software originally authored by Josh Bendavid, with some minor modifications. The following settings are available: flag ResonanceDecayFilter:filter = false Activate filter if true. flag ResonanceDecayFilter:exclusive = false Demand exactly the particles requested by the filter if true. If false, additional particles can be present in the resonance decays. flag ResonanceDecayFilter:eMuAsEquivalent = false If true, treat the particle id for electron and muon as the same. flag ResonanceDecayFilter:eMuTauAsEquivalent = false As above, but include tau leptons. flag ResonanceDecayFilter:allNuAsEquivalent = false flag ResonanceDecayFilter:udscAsEquivalent = false If true, treat the particle id for all up, down, strange, and charm quarks as the same.</flag> flag ResonanceDecayFilter:udscbAsEquivalent = false As above, but include bottom quarks. flag ResonanceDecayFilter:wzAsEquivalent = false If true, treat the particle id for W and Z bosons as the same. mvec ResonanceDecayFilter:mothers = {} If provided, the set of mothers that will be filtered. Otherwise, all resonance decay products are considered. mvec ResonanceDecayFilter:daughters = {} A list of particle ids for resonance decay products that will pass the filter. If empty, all particles will pass the filter. Beware: an infinite loop is possible if the daughter never appears in resonance decays.

SetLHEDecayProductHook.h is part of the PYTHIA event generator. Copyright (C) 2024 Stephen Mrenna, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Stephen Mrenna, December 2022. This class is used to modify the resonance decay products from an input LHE file. The following settings are available: flag SetLHEDecayProduct:filter = false Activate filter if true.

Visualisation.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. The following functions analyze a scattering event and save the event in an output format that can be converted into a postscript figure using the "graphviz" program. Author: Nadine Fischer (primary), Stefan Prestel (porting)

Analysis.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Sphericity, Thrust, ClusJet, CellJet and SlowJet classes.

Basics.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Rndm, Vec4, RotBstMatrix and Hist classes, and some related global functions.

BeamParticle.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the BeamParticle class.

BeamRemnants.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the BeamRemnants class.

BeamSetup.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

BeamShape.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

BoseEinstein.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

ColourReconnection.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ColourReconnection class.

ColourTracing.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ColourReconnection class.

DeuteronProduction.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DeuteronProduction class.

Dire.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the top level Dire class.

DireBasics.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

DireHistory.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

DireMerging.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

DireMergingHooks.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

DireSpace.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

DireSplitInfo.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Dire classes use as storage containers for splitting information.

DireSplitingLibrary.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Dire splitting library.

DireSplittings.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DireSplitting class.

DireSplitingsEW.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Dire electroweak splittings.

DireSplittingsQCD.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DireSplittingQCD and derived classes.

DireSplittingsQED.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DireSplittingQED and derived classes.

DireSplittingsU1new.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DireSplittingU1new class.

DireTimes.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DireTimesEnd and DireTimes classes.

DireWeightContainer.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Stefan Prestel, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DireWeightContainer class.

Event.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Particle and Event classes, and some related global functions.

ExternalMEs.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Stefan Prestel, Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

FragmentationFlavZpT.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the StringFlav, StringZ and StringPT classes.

FragmentationSystems.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ColConfig, StringRegion and StringSystem classes.

GammaKinematics.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the GammaKinematics class.

HadronLevel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HadronWidths.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

HardDiffraction.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Function definitions (not found in the header) for the HardDiffraction class.

HeavyIons.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the HeavyIons.h header) for the heavy ion classes classes, and some related global functions.

HelicityBasics.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for helper classes used in tau decays.

HelicityMatrixElements.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for physics classes used in tau decays.

HiddenValleyFragmentation.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the HiddenValleyFragmentation class and its helper classes.

HIInfo.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the HIInfo.h header) for the heavy ion classes classes.

HINucleusModel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the HINucleusModel.h header) for the built-in heavy ion nucleus models.

History.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. Function definitions (not found in the header) for the Clustering and History classes.

HISubCollisionModel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the HISubCollisionModel.h header) for the built-in heavy ion subcollision models.

Info.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

JunctionSplitting.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the JunctionSplitting class.

LesHouches.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the LHAup and LHAupLHEF classes.

LHEF3.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. It contains the main class for LHEF 3.0 functionalities. Function definitions.

Basics.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

LowEnergyProcess.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the LowEnergyProcess class.

MathTools.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

MergingHooks.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. Function definitions (not found in the header) for the Merging class.

MergingHooks.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. This file is written by Stefan Prestel. Function definitions (not found in the header) for the HardProcess and MergingHooks classes.

MiniStringFragmentation.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the . MiniStringFragmentation class

MultipartonInteractions.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SigmaMultiparton and MultipartonInteractions classes.

NucleonExcitations.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

ParticleData.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the DecayChannel, ParticleDataEntry and ParticleData classes.

ParticleDecays.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ParticleDecays class.

PartonDistributions.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the PDF, LHAPDF, LHAGrid1, GRV94L, CTEQ5L, MSTWpdf, CTEQ6pdf, ProtonPoint, GRVpiL, PomFix, PomH1FitAB, /// PomH1Jets, PomHISASD, Lepton, LeptonPoint, NeutrinoPoint, CJKL, Lepton2gamma, GammaPoint, EPAexternal, nPDF, Isopsin, EPS09 and EPPS16 classes.

PartonLevel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Hard diffraction added by Christine Rasmussen.

PartonSystems.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the PartonSystem and PartonSystems classes.

PartonVertex.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

PhaseSpace.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the PhaseSpace and PhaseSpace2to2tauyz classes.

PhysicsBase.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Plugins.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Manuel Szewc, and Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Allow string and character manipulation.

ProcessContainer.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ProcessContainer and SetupContainers classes.

ProcessLevel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Pythia.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

PythiaParallel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Marius Utheim, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the PythiaParallel class.

PythiaStdlib.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

ResonanceDecays.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ResonanceDecays class.

ResonanceWidths.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ResonanceWidths class and classes derived from it.

ResonanceWidthsDM.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for DM resonance properties in the ResonanceS, ResonanceZp, ResonanceS1, ResonanceCha, ResonanceDM2, and ResonanceChaD classes.

RHadrons.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Ropewalk.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the RopeRandState, RopeDipoleEnd, OverlappingRopeDipole, RopeDipole, Ropewalk, RopeFragPars and FlavourRope classes.

Settings.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Allow string and character manipulation.

ShowerModel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the ShowerModel class.

SigmaCompositeness.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the compositeness simulation classes.

SigmaDM.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Dark Matter simulation classes.

SigmaEW.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the electroweak simulation classes (including photon processes).

SigmaExtraDim.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Author: Stefan Ask for the LED routines. Function definitions (not found in the header) for the extra-dimensional simulation classes.

SigmaGeneric.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Johan Bijnens, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for various generic production processes, to be used as building blocks for some BSM processes. Currently represented by QCD pair production of colour triplet objects, with spin either 0, 1/2 or 1. Cross sections are only provided for fixed m3 = m4, so do some gymnastics: i) s34Avg picked so that beta34 same when s3, s4 -> s34Avg. ii) tHQ = tH - mQ^2 = -0.5 sH (1 - beta34 cos(thetaH)) for m3 = m4 = mQ, but tH - uH = sH beta34 cos(thetaH) also for m3 != m4, so use tH, uH selected for m3 != m4 to derive tHQ, uHQ valid for m3 = m4.

SigmaHiggs.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Part of code written by Marc Montull, CERN summer student 2007. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the Higgs simulation classes.

SigmaLeftRightSym.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the left-right-symmetry simulation classes.

SigmaLeptoquark.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the leptoquark simulation classes.

SigmaLowEnergy.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SigmaLowEnergy class. Many cross sections and methods used here are based on UrQMD; see https:///doi.org/10.1016/S0146-6410(98)00058-1

SigmaNewGaugeBosons.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the leptoquark simulation classes.

SigmaOnia.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the charmonia/bottomonia simulation classes.

SigmaProcess.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SigmaProcess class, and classes derived from it.

SigmaQCD.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the QCD simulation classes.

SigmaSUSY.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the supersymmetry simulation classes.

SigmaTotal.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SigmaTotal class, and the auxiliary classes SigmaTotAux, SigmaTotOwn, SigmaSaSDL, SigmaMBR, SigmaABMST and SigmaRPP.

SimpleSpaceShower.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SimpleSpaceShower class.

SimpleTimeShower.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SimpleTimeShower class.

SimpleWeakShowerMEs.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SimpleWeakShowerMEs class.

SLHAinterface.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

SplittingsOnia.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Naomi Cooke, Philip Ilten, Leif Lonnblad, Steve Mrenna, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

StandardModel.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Streams.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Internal classes to implement gzstream. See header file for user classes. Adapted for Sherpa by Frank Siegert from: gzstream, C++ iostream classes wrapping the zlib compression library. Copyright (C) 2024 Deepak Bandyopadhyay, Lutz Kettner (http:///www.cs.unc.edu/Research/compgeom/gzstream). Further adapted to PYTHIA by Stefan Prestel.

StringFragmentation.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the StringEnd and StringFragmentation classes.

StringInteractions.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the StringInteractions class.

StringLength.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the StringLength class.

SusyCouplings.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the supersymmetric couplings class.

SusyLesHouches.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. Main authors of this file: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

SusyResonanceWidths.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand Authors: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SUSY Resonance widths classes.

SusyWidthFunctions.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand Authors: N. Desai, P. Skands PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the SUSY Resonance three-body decay width classes.

TauDecays.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Philip Ilten, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

UserHooks.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.Note: compilation crashes if PhaseSpace.h is moved to UserHooks.h.

VinciaCommon.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

VinciaAntennaFunctions.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the AntennaSet, AntennaFunction, and MECs classes for both FSR and ISR, and some related global functions.

VinciaCommon.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the headers) for the Colour, Rambo, and VinciaCommon classes, and related auxiliary methods.

VinciaDiagnstoics.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for Vincia's diagnostics class.

VinciaEW.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for Vincia's EW shower class and related auxiliary methods. Main author is Rob Verheyen.

VinciaFSR.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the VinciaFSR class and auxiliary classes.

VinciaHistory.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the VinciaHistory class and auxiliary classes.

VinciaISR.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for the VinciaISR class and auxiliary classes.

VinciaMerging.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

VinciaMergingHooks.h is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand, Peter Skands. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

VinciaQED.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details. Function definitions (not found in the header) for Vincia's QED shower class and related auxiliary methods. Main author is Rob Verheyen.

VinciaTrialGenerators.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

VinciaWeights.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Peter Skands, Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Weights.cc is a part of the PYTHIA event generator. Copyright (C) 2024 Torbjorn Sjostrand. PYTHIA is licenced under the GNU GPL v2 or later, see COPYING for details. Please respect the MCnet Guidelines, see GUIDELINES for details.

Typedef Documentation

typedef pair< int, int > pairInt

Useful definitions for a pair of integers and a vector of pairs.

Rescatter: If a dipole stretches between two different systems, those systems will no longer locally conserve momentum. These imbalances become problematic when ISR or primordial kT is switched on as these steps involve Lorentz boosts.

'rescatterPropagateRecoil' tries to fix momentum in all systems by propogating recoil momentum through all intermediate systems. As the momentum transfer is already defined, this can lead to internal lines gaining a virtuality.

Function Documentation

complex Pythia8::ampLedS	(	double	x,
		double	n,
		double	L,
		double	M
	)

ampLedS (amplitude) method for LED graviton tree level exchange. Based on Eq. (8) in JHEP 1105 (2011) 092, arXiv:1101.4919.

Constants.

Base functions, F1 and F2.

Recursive part.

double besselI0

(

double

x

)

Modified Bessel functions of the first and second kinds.

Polynomial approximation for modified Bessel function of the first kind. Based on Abramowitz & Stegun, Handbook of mathematical functions (1964).

Parametrize in terms of t.

Only positive values relevant.

Parametrize in terms of t.

Only positive values relevant.

double besselI1

(

double

x

)

Polynomial approximation for modified Bessel function of the first kind. Based on Abramowitz & Stegun, Handbook of mathematical functions (1964).

Parametrize in terms of t.

Only positive values relevant.

Parametrize in terms of t.

Only positive values relevant.

double besselK0

(

double

x

)

Polynomial approximation for modified Bessel function of a second kind. Based on Abramowitz & Stegun, Handbook of mathematical functions (1964).

Polynomial approximation valid ony for x > 0.

Polynomial approximation valid ony for x > 0.

double besselK1

(

double

x

)

Polynomial approximation for modified Bessel function of a second kind. Based on Abramowitz & Stegun, Handbook of mathematical functions (1964).

Polynomial approximation valid ony for x > 0.

Polynomial approximation valid ony for x > 0.

bool brent	(	double &	solutionOut,
		function< double(double)>	f,
		double	target,
		double	xLo,
		double	xHi,
		double	tol,
		int	maxIter
	)

Solve f(x) = target for x in the specified range.

Solve f(x) = target for x in the specified range. Note that f must be a function of one variable. In order to solve an equation with a multivariable function, like solving f(x, y) = target for x when y is fixed, the other variables can be captured using a lambda function.

Range checks.

Evaluate function - targetValue at lower boundary.

Evaluate function - targetValue at upper boundary.

Check if root is bracketed.

Start searching for root.

Now check at x = x3.

Check if tolerance on f has been reached.

Is root bracketed in lower or upper half?

Check if tolerance on x has been reached.

Work out next step to take in x.

First attempt, using gradient

If this was too far, just step to the middle

Maximum number of iterations exceeded.

Range checks.

Evaluate function - targetValue at lower boundary.

Evaluate function - targetValue at upper boundary.

Check if root is bracketed.

Start searching for root.

Now check at x = x3.

Check if tolerance on f has been reached.

Is root bracketed in lower or upper half?

Check if tolerance on x has been reached.

Work out next step to take in x.

First attempt, using gradient

If this was too far, just step to the middle

Maximum number of iterations exceeded.

Vec4 cross4	(	const Vec4 &	a,
		const Vec4 &	b,
		const Vec4 &	c
	)

Cross-product of three 4-vectors ( p_i = epsilon_{iabc} p_a p_b p_c).

Cross-product of three 4-vectors ( p_i = epsilon_{iabc} p_a p_b p_c)

string demangle

(

string

name

)

Demangle a symbol name, if the necessary demangling libraries are present.

The following method was partially taken from boost/core/demangle.hpp

Copyright 2014 Peter Dimov Copyright 2014 Andrey Semashev

Distributed under the Boost Software License, Version 1.0. See include/Pythia8/PythiaStdLib.h or http:///www.boost.org/LICENSE_1_0.txt

double dist2Fun	(	int	measure,
		const SingleClusterJet &	j1,
		const SingleClusterJet &	j2
	)

Namespace function declarations; friend of SingleClusterJet.

Distance measures between two SingleClusterJet objects.

Distance measures (Lund, JADE, Durham) with friend.

JADE distance.

Durham distance.

Lund distance; "default".

JADE distance.

Durham distance.

Lund distance; "default".

shared_ptr< void > dlopen_plugin	(	string	libName,
		Logger *	loggerPtr
	)

Load a plugin library with dlopen.

Load a plugin library with dlopen. The shared pointer destructor calls dlcose automatically.

Load the plugin library.

Check the Pythia version is compatible.

Check the compiled Pythia version is the same (warning, not error).

Return the shared pointer.

Use a custom destructor.

Load the plugin library.

Check the Pythia version is compatible.

Check the compiled Pythia version is the same (warning, not error).

Return the shared pointer.

Use a custom destructor.

double dot3	(	const Vec4 &	v1,
		const Vec4 &	v2
	)

Scalar and cross product of 3-vector parts.

The scalar product of two three-vectors.

vectorPairInt findParentSystems ( const int  sys, Event &  event, PartonSystems *  partonSystemsPtr, bool  forwards  )

inline

findParentSystems Utility routine to find all parent systems of a given system Returns a vector of pairs of integers with: a) The system index, including the starting system (negative if (b) points to a parent system, positive if (b) points to a daughter system b) The event record index that is the path out of the system (if forwards == false, this is an incoming parton to the system, and is +ve if side A or -ve if side B, if forwards == true, this is an outgoing parton from the system). Returns as empty vector on failure Note: this assumes single rescattering only and therefore only one possible parent system

Get two incoming partons

Check if either of these links to another system

Save the current system to the vector

If forwards is set, change all event record indices to go to daughter systems rather than parent systems

Get two incoming partons

Check if either of these links to another system

Save the current system to the vector

while (true)

If forwards is set, change all event record indices to go to daughter systems rather than parent systems

Get two incoming partons

Check if either of these links to another system

Save the current system to the vector

while (true)

If forwards is set, change all event record indices to go to daughter systems rather than parent systems

RotBstMatrix Pythia8::fromCMframe ( const Vec4 &  p1, const Vec4 &  p2, bool  flip = false  )

inline

Get a RotBstMatrix from rest frame of p1 and p2, where p1 is assumed by default to be along the z-axis. The flip option handles the case when p1 is along the negative z-axis.

RotBstMatrix Pythia8::fromCMframe ( const Vec4 &  ptot, const Vec4 &  pz, const Vec4 &  pxz  )

inline

Get a RotBstMatrix from rest frame of ptot where pz is along the z-axis and pxz is in the xz-plane with positive x.

double gammaReal

(

double

x

)

The Gamma function for real argument.

Reflection formula (recursive!) for x < 0.5.

Iterate through terms.

Answer.

Reflection formula (recursive!) for x < 0.5.

Iterate through terms.

Answer.

pair< Vec4, Vec4 > getTwoPerpendicular	(	const Vec4 &	v1,
		const Vec4 &	v2
	)

Create two vectors that are perpendicular to both input vectors.

One perpendicular vector from three-dimensional cross-product.

Second perpendicular vector from four-dimensional cross-product.

One perpendicular vector from three-dimensional cross-product.

Second perpendicular vector from four-dimensional cross-product.

void Pythia8::initpdfsetm_	(	int &	,
		const char *	,
		int
	)

Interfaces to to make the C++ calls similar to f77.

Declare the LHAPDF5 f77 subroutines that are needed.

bool integrateGauss	(	double &	resultOut,
		function< double(double)>	f,
		double	xLo,
		double	xHi,
		double	tol
	)

Integrate f(x) dx over the specified range.

Integrate f over the specified range. Note that f must be a function of one variable. In order to integrate one variable of function with multiple arguments, like integrating f(x, y) with respect to x when y is fixed, the other variables can be captured using a lambda function.

Boundary check: return zero if xLo >= xHi.

Initialize temporary result.

8-point unweighted.

16-point unweighted.

Set up integration region.

midpoint

midpoint, relative to zLo

Calculate 8-point and 16-point quadratures.

Precision in this bin OK, add to cumulative and go to next.

Next bin: LO = end of current, HI = end of integration region.

Precision in this bin not OK, subdivide.

Cannot subdivide further at double precision. Fail.

Write result and return success.

Boundary check: return zero if xLo >= xHi.

Initialize temporary result.

8-point unweighted.

16-point unweighted.

Set up integration region.

midpoint

midpoint, relative to zLo

Calculate 8-point and 16-point quadratures.

Precision in this bin OK, add to cumulative and go to next.

Next bin: LO = end of current, HI = end of integration region.

Precision in this bin not OK, subdivide.

Cannot subdivide further at double precision. Fail.

Write result and return success.

double kallenFunction	(	const double	x,
		const double	y,
		const double	z
	)

Kallen function.

The Kallen function.

double lambertW

(

const double

x

)

Lambert W function.

Lambert W function using the rational fit from Darko Veberic's paper, arXiv:1209.0735v2. Should give 5 digits of precision for positive arguments x not too large (fit region was 0.3, 2e, but still has 5-digit accuracy at zero). Precision quickly drops for negative values, but he has extra functions that can be implemented if those are needed, and for very large values the asymptotic log(x), log(log(x)) form could be used if precise solutions for large values are needed. For now just write a warning if we are ever asked for a value far outside region of validity.

vector< double > linSpace	(	int	nPts,
		double	xMin,
		double	xMax
	)

Generate linearly or logarithmically spaced points.

Generate linearly spaced points.

double LundFFAvg	(	double	a,
		double	b,
		double	c,
		double	mT2,
		double	tol = 1.e-6
	)

Average, <z>, of Lund FF.

Checks whether the integration succeeded.

Define lundFF as a function of only z, fixing a, b, c, mT2 as parameters Note that c must be captured by reference, since it is modified later.

Get denominator.

Get numerator

Done.

Checks whether the integration succeeded.

Define lundFF as a function of only z, fixing a, b, c, mT2 as parameters Note that c must be captured by reference, since it is modified later.

Get denominator.

Get numerator

Done.

double LundFFRaw	(	double	z,
		double	a,
		double	b,
		double	c,
		double	mT2
	)

Functions for unnormalised and average Lund FF.

The unnormalised Lund FF

double m

(

const Vec4 &

v1

)

Invariant mass and its square.

The invariant mass of one or more four-vectors.

double m	(	const Particle &	pp1,
		const Particle &	pp2
	)

Particles invariant mass, mass squared, and momentum dot product. (Not part of class proper, but tightly linked.)

shared_ptr<T> Pythia8::make_plugin	(	string	libName,
		string	className,
		Pythia *	pythiaPtr,
		Settings *	settingsPtr,
		Logger *	loggerPtr
	)

Load a plugin, given a full set of arguments.

Set up the available pointers.

Load the library.

Check the plugin object type.

Check the pointers required by the plugin object.

Load the symbol to construct the plugin object.

Construct the plugin object shared pointer.

Use a custom destructor.

Destroy the plugin object.

std::string methodName ( const std::string &  prettyFunction, bool  withNamespace = false  )

inline

end PYTHIA_FUNCTION

end VINCIA_FUNCTION

Find the beginning of the argument list.

Find the start of the function name.

Return the correct substring.

Include Pythia8:: or not.

Include Pythia8:: or not.

string num2str	(	int	i,
		int	width
	)

String utilities.

VINCIA Auxiliary helper functions.

External auxiliaries, extra four-products. External auxiliaries, string manipulation.

Wave4 operator*	(	complex	s,
		const Wave4 &	w
	)

Namespace function declarations; friends of Wave4 class.

complex * Wave4.

Wave4 class. Friend methods to it.

Wave4 operator*	(	Wave4	w,
		GammaMatrix	g
	)

Namespace function declarations; friends of GammaMatrix class.

Wave4 * GammaMatrix.

Vec4 Pythia8::operator* ( double  f, const Vec4 &  v1  )

inline

Namespace function declarations; friends of Vec4 class.

Operator overloading with friends.

Implementation of operator overloading with friends.

Hist operator+	(	double	f,
		const Hist &	h1
	)

Operator overloading with friends.

Implementation of operator overloading with friends.

ostream & operator<<	(	ostream &	os,
		Wave4	w
	)

Print a Wave4 vector.

Wave4 * GammaMatrix multiplication is defined in the GammaMatrix class.

Print a Wave4 vector.

ostream & operator<<	(	ostream &	os,
		GammaMatrix	g
	)

Print GammaMatrix.

<< GammaMatrix.

ostream & operator<<	(	ostream &	os,
		const Vec4 &	v
	)

Print a four-vector.

Print a four-vector: also operator overloading with friend.

ostream & operator<<	(	ostream &	os,
		const RotBstMatrix &	M
	)

Namespace function declaration; friend of RotBstMatrix class.

Print a rotation and boost matrix: operator overloading with friend.

Print a transformation matrix.

ostream & operator<<	(	ostream &	os,
		const Hist &	h
	)

Namespace function declarations; friends of Hist class.

Print a histogram: also operator overloading with friend.

Print a histogram with overloaded << operator.

Do not print empty histograms.

Write time and title.

Group bins, where required, to make printout have fewer columns. Avoid overflow.

Find minimum and maximum bin content.

Determine scale and step size for y axis.

Convert bin contents to integer form; fractional fill in top row.

Print histogram row by row.

Print sign and value of bin contents

Print sign and value of lower bin edge.

Print explanation if histogram cannot be shown.

Mean determines overall output format for moments.

Fixed or Scientific for ranges.

Fixed or Scientific for contents.

doStats and nEff determine if uncertainties should be printed.

Fixed or Scientific for nEffective.

---

First line.

Number of entries.

xMin.

Underflow

Mean.

RMS.

End of line.

---

Second line.

Sum of Weights (inside histogram range).

xMax.

Overflow

Median (excluding underflow and overflow bins).

nEff: Statistical power = effective number of unweighted entries. If nEff ~ h.inside, use same precision as for SumW.

Return to standard PYTHIA format.

Do not print empty histograms.

Write time and title.

Group bins, where required, to make printout have fewer columns. Avoid overflow.

Find minimum and maximum bin content.

Determine scale and step size for y axis.

Convert bin contents to integer form; fractional fill in top row.

Print histogram row by row.

Print sign and value of bin contents

Print sign and value of lower bin edge.

Print explanation if histogram cannot be shown.

Mean determines overall output format for moments.

Fixed or Scientific for ranges.

Fixed or Scientific for contents.

doStats and nEff determine if uncertainties should be printed.

Fixed or Scientific for nEffective.

---

First line.

Number of entries.

xMin.

Underflow

Mean.

RMS.

End of line.

---

Second line.

Sum of Weights (inside histogram range).

xMax.

Overflow

Median (excluding underflow and overflow bins).

nEff: Statistical power = effective number of unweighted entries. If nEff ~ h.inside, use same precision as for SumW.

Return to standard PYTHIA format.

double phi	(	const Vec4 &	v1,
		const Vec4 &	v2
	)

phi is azimuthal angle between v1 and v2 around z axis.

Azimuthal angle between two three-vectors.

double phi	(	const Vec4 &	v1,
		const Vec4 &	v2,
		const Vec4 &	n
	)

phi is azimuthal angle between v1 and v2 around n axis.

Azimuthal angle between two three-vectors around a third.

void Pythia8::printEvent	(	Event &	evt,
		string	fileName = "event"
	)

The main visualisation function. Note that this is really only a schematic visualisation. In particular, the space-time structure of the partonic evolution and the space-time position of string breakups are only handled schematically.

Identifier of that particle.

Name that will appear in graph.

Find particle group for colors.

Skip hadrons and decay products for simplified output.

Special treatment of hadronization particles for simplified output.

Check that daughters are are part of hadronization

Check if other particles in preparation has same daughter list.

Setup the graph for the particle.

Setup arrow to mother(s).

Setup arrow to daughter(s).

Add the hadron groups for simplified output.

Identifier of that group.

Name that will appear in graph.

Add the group to the graph.

Add an arrow from each parent to the group.

Identifier of that parent.

List of particles to be erased.

Check if parent is beam remnant.

Trace back one more generation if double hadronization prep.

Trace back one more generation if double hadronization prep.

Erase any parents that might be left in the graph.

Write output.

Add a legend, skip default.

void printOut	(	string	place,
		string	message,
		int	nPad = 0,
		char	padChar = '-'
	)

end METHOD_NAME

Print "(place) message" with option for padding to len with padChar.

Global functions accessible in the Vincia namespace. Utilities for printing out VINCIA Messages.

Are we asked to pad until a certain length?

Are we asked to pad until a certain length?

bool pShift	(	Vec4 &	p1Move,
		Vec4 &	p2Move,
		double	m1New,
		double	m2New
	)

Shift four-momenta within pair from old to new masses.

Shift four-momenta within pair from old to new masses. Note that p1Move and p2Move change values during operation.

Standard kinematics variables.

Check that shift operation possible.

Calculate needed shift and apply it.

Standard kinematics variables.

Check that shift operation possible.

Calculate needed shift and apply it.

string Pythia8::py_status

(

int

stAbs

)

The functions below assist the main function, printEvent, in producing an event visualisation, by converting status codes and defining arrows.

double RRapPhi	(	const Vec4 &	v1,
		const Vec4 &	v2
	)

R is distance in cylindrical (y/eta, phi) coordinates.

Distance in cylindrical (y, phi) coordinates.

bool Pythia8::sortFunc	(	ColourDipolePtr	a,
		ColourDipolePtr	b
	)

---

Help function to sort dipoles in right order.

void table	(	const Hist &	h1,
		const Hist &	h2,
		ostream &	os = cout,
		bool	printOverUnder = false,
		bool	xMidBin = true
	)

Print a table out of two histograms with same x axis.

Print a table out of two histograms with same x axis (no errors printed).

Print a table out of two histograms with same x axis (e.g. for Gnuplot).

Require histogram x axes to agree.

Print histogram vectors bin by bin, with mean x as first column.

Require histogram x axes to agree.

Print histogram vectors bin by bin, with mean x as first column.

double theta	(	const Vec4 &	v1,
		const Vec4 &	v2
	)

theta is polar angle between v1 and v2.

Opening angle between two three-vectors.

RotBstMatrix Pythia8::toCMframe ( const Vec4 &  p1, const Vec4 &  p2  )

inline

Get a RotBstMatrix to rest frame of p1 and p2, where p1 is along the z-axis.

RotBstMatrix Pythia8::toCMframe ( const Vec4 &  ptot, const Vec4 &  pz, const Vec4 &  pxz  )

inline

Get a RotBstMatrix to rest frame of ptot where pz is along the z-axis and pxz is in the xz-plane with positive x.

string toLower	(	const string &	name,
		bool	trim = true
	)

Convert a string to lowercase for case-insensitive comparisons. By default remove any initial and trailing blanks or escape characters.

Convert string to lowercase for case-insensitive comparisons. By default remove any initial and trailing blanks or escape characters.

Copy string without initial and trailing blanks or escape characters.

Convert to lowercase letter by letter.

Copy string without initial and trailing blanks or escape characters.

Convert to lowercase letter by letter.

string toString

(

double

val

)

Convert a double to a string.

Convert a double to string using reasonable formatting.

string type_plugin	(	string	libName,
		string	className,
		Logger *	loggerPtr = nullptr
	)

Determine a plugin type.

Load the plugin library.

Grab the plugin object type.

Load the plugin library.

Grab the plugin object type.

bool Pythia8::validEvent

(

const Event &

event

)

The Merging class.

Check colour/flavour correctness of state.

Check charge sum in initial and final state

Check that overall pT is vanishing.

Z0 Pythia8::Z

(

f is quark or

lepton

)

Initialize process.

Sigma1ffbar2gmZZprime class. Cross section for f fbar -> gamma

Allow to pick only parts of full gamma*/Z0/Z'0 expression.

Store Z'0 mass and width for propagator.

Properties of Z0 resonance also needed.

Ensure that arrays initially are empty.

Store first-generation axial and vector couplings.

Determine if the 4th generation should be included

Second and third (and possibly 4th) generation could be carbon copy of this...

... or could have different couplings.

Coupling for Z' -> W+ W- and decay angular admixture.

Set pointer to particle properties and decay table.

Z0 gamma * Z0

(

f is quark or

lepton

)

Initialize process.

Sigma1ffbar2gmZ class. Cross section for f fbar -> gamma

Sigma2ffbar2gmZgmZ class. Cross section for f fbar -> gamma

Allow to pick only gamma* or Z0 part of full gamma*/Z0 expression.

Store Z0 mass and width for propagator.

Set pointer to particle properties and decay table.

Allow to pick only gamma* or Z0 part of full gamma*/Z0 expression.

Store Z0 mass and width for propagator.

Set pointer to particle properties and decay table.

Allow to pick only gamma* or Z0 part of full gamma*/Z0 expression.

Store Z0 mass and width for propagator.

Set pointer to particle properties and decay table.

Variable Documentation

Z0* Unique complication

Evaluate correlated decay flavours of the two gamma

const double DYAC[]

Initial value:

= {0.04, 0.05, 0.06, 0.08, 0.10,
  0.12, 0.15, 0.20, 0.25, 0.30}

Constants for printout: fixed steps on y scale; filling characters.

Z0 F Fbar

A derived class for f fbar -> gamma

Z0 f fbar

Sigma2ffbar2ffbarsgmZ class. Cross section f fbar -> gamma

double GammaCoef[9]

Initial value:

= {
     0.99999999999980993,     676.5203681218851,   -1259.1392167224028,
      771.32342877765313,   -176.61502916214059,    12.507343278686905,
    -0.13857109526572012, 9.9843695780195716e-6, 1.5056327351493116e-7}

The Gamma function for real arguments, using the Lanczos approximation. Code based on http:///en.wikipedia.org/wiki/Lanczos_approximation

const char NUMBER[]

Initial value:

= {'0', '1', '2', '3', '4', '5',
  '6', '7', '8', '9', 'X' }

struct { ... } pwhg_rnd_

Give access to the POWHEG commonblocks and subroutines.

The random number common block.