Inheritance diagram for Dire_fsr_qcd_Q2Qqqbar:

Public Member Functions
	Dire_fsr_qcd_Q2Qqqbar (int idEmtAfterIn, string idIn, int softRS, Settings settings, ParticleData particleData, Rndm rndm, BeamParticle beamA, BeamParticle beamB, CoupSM coupSM, Info info, DireInfo direInfo)

bool	canRadiate (const Event &, pair< int, int >, unordered_map< string, bool >=unordered_map< string, bool >(), Settings =NULL, PartonSystems =NULL, BeamParticle *=NULL)
	Return true if this kernel should partake in the evolution.

bool	canRadiate (const Event &, int iRadBef, int iRecBef, Settings =NULL, PartonSystems =NULL, BeamParticle *=NULL)

virtual vector< int >	radAndEmt (int idRadBef, int)

int	nEmissions ()

int	kinMap ()

bool	canUseForBranching ()

vector< pair< int, int > >	radAndEmtCols (int iRad, int colType, Event state)

pair< int, int >	radBefCols (int colRadAfter, int acolRadAfter, int colEmtAfter, int acolEmtAfter)
	Return colours of recombined radiator (before splitting!)

int	radBefID (int idRadAfter, int idEmtAfter)
	Return id of recombined radiator (before splitting!)

double	gaugeFactor (int=0, int=0)
	Dummy values, since not used!

double	symmetryFactor (int=0, int=0)
	Return symmetry factor for splitting.

double	zSplit (double zMinAbs, double zMaxAbs, double m2dip)
	Pick z for new splitting. More...

double	overestimateInt (double zMinAbs, double zMaxAbs, double pT2Old, double m2dip, int order=-1)
	New overestimates, z-integrated versions. More...

double	overestimateDiff (double z, double m2dip, int order=-1)
	Return kernel for new splitting. More...

bool	calc (const Event &state=Event(), int order=-1)
	Functions to calculate the kernel from SplitInfo information. More...

double	counterTerm (double si1, double si2, double sj1, double sj2, double sij, double s12)

bool	allow_sai_endpoint_for_kinematics ()
	Treatment of additional virtual corrections.

bool	allow_xa_endpoint_for_kinematics ()

void	try_sai_endpoint ()
	Functions to set if kernel should contribute to a kinematical endpoint.

void	try_xa_endpoint ()

bool	is_sai_endpoint ()
	Return endpoint information.

bool	is_xa_endpoint ()

Public Member Functions inherited from DireSplittingQCD
	DireSplittingQCD (string idIn, int softRS, Settings settings, ParticleData particleData, Rndm rndm, BeamParticle beamA, BeamParticle beamB, CoupSM coupSM, Info info, DireInfo direInfo)
	Constructor and destructor.

void	init ()

double	getNF (double pT2)
	AUXILIARY FUNCTIONS. More...

double	GammaQCD2 (double NF=5.)

double	GammaQCD3 (double NF=5.)

double	betaQCD0 (double NF=5.)

double	betaQCD1 (double NF=5.)

double	betaQCD2 (double NF=5.)

double	as2Pi (double pT2, int orderNow=-1, double renormMultFacNow=-1.)

double	softRescaleInt (int order)

double	softRescaleDiff (int order, double pT2, double renormMultFacNow=-1.)

double	beta0Endpoint (int order, double m2dip, double pT2, double z, double renormMultFacNow=-1.)

double	polevl (double x, double *coef, int N)
	Helper function to calculate dilogarithm.

double	DiLog (double x)
	Function to calculate dilogarithm.

vector< int >	sharedColor (const Event &event, int iRad, int iRec)

bool	hasSharedColor (const Event &event, int iRad, int iRec)

int	findCol (int col, vector< int > iExc, const Event &, int type)

bool	useFastFunctions ()

virtual bool	isPartial ()

virtual int	couplingType (int, int)

virtual double	coupling (double z, double pT2, double m2dip, double renormMultFacNow=-1., pair< int, bool > radBef=pair< int, bool >(), pair< int, bool > recBef=pair< int, bool >())

virtual double	couplingScale2 (double z, double pT2, double m2dip, pair< int, bool > radBef, pair< int, bool > recBef)

virtual double	getJacobian (const Event &=Event(), PartonSystems *partonSystems=0)

virtual unordered_map< string, double >	getPhasespaceVars (const Event &=Event(), PartonSystems *=0)

double	sCoef (int powz)

double	sExp (int powz)

double	kCoef (int powz)

double	kExp (int powz)

double	cCoef (int powz)

double	cExp (int powz)

double	fCoef ()

bool	hasMECBef (const Event &state, double pT2)

bool	hasMECAft (const Event &state, double pT2)

Public Member Functions inherited from DireSplitting
	DireSplitting ()
	Constructor and destructor.

	DireSplitting (string idIn, int softRS, Settings settings, ParticleData particleData, Rndm rndm, BeamParticle beamA, BeamParticle beamB, CoupSM coupSMPtrIn, Info infoPtrIn, DireInfo direInfo)

void	init ()
	The Splitting class.

bool	is (ulong pattern)

string	name ()

virtual bool	aboveCutoff (double, const Particle &, const Particle &, int, PartonSystems *=NULL)
	Discard below the cut-off for the splitting.

virtual int	motherID (int)
	Return id of mother after splitting.

virtual int	sisterID (int)
	Return id of emission.

virtual bool	swapRadEmt ()

virtual bool	isSymmetric (const Particle =NULL, const Particle =NULL)

virtual vector< int >	recPositions (const Event &, int, int)

virtual double	getKernel (string="")
	Functions to store and retrieve all the variants of the kernel.

virtual unordered_map< string, double >	getKernelVals ()

virtual void	clearKernels ()

void	setTimesPtr (shared_ptr< DireTimes > fsrIn)

void	setTimesDecPtr (shared_ptr< DireTimes > fsrIn)

void	setSpacePtr (shared_ptr< DireSpace > isrIn)

virtual bool	allow_z_endpoint_for_kinematics ()
	Treatment of additional virtual corrections.

virtual bool	allow_pT2_endpoint_for_kinematics ()

virtual void	try_z_endpoint ()
	Functions to set if kernel should contribute to a kinematical endpoint.

virtual void	try_pT2_endpoint ()

virtual bool	is_z_endpoint ()
	Return endpoint information.

virtual bool	is_pT2_endpoint ()

virtual double	tdire_ff (double, double t, double)
	Functions to calculate Dire variables from the evolution variables.

virtual double	zdire_ff (double z, double, double)

virtual double	tdire_fi (double, double t, double)

virtual double	zdire_fi (double z, double, double)

virtual double	tdire_if (double, double t, double)

virtual double	zdire_if (double z, double, double)

virtual double	tdire_ii (double, double t, double)

virtual double	zdire_ii (double z, double, double)

virtual void	storeOverhead (double pT2, double x, int radid, int nf, double val)

virtual double	overhead (double pT2, int idd, int nf)

Public Attributes
int	nGluonToQuark

int	idEmtAfterSave

bool	is_sai_endpoint_save

Public Attributes inherited from DireSplittingQCD
double	CA
	VARIABLES.

double	TR

double	CF

double	pTmin

double	pT2minVariations

int	NF_qcd_fsr

int	orderSave

bool	usePDFalphas

bool	doVariations

bool	doCorrelations

bool	doMECs

double	alphaSorder

double	alphaS2pi

AlphaStrong	alphaS

int	asSchemeISR

int	asSchemeFSR

bool	useBackboneGluons

bool	doGeneralizedKernel

Public Attributes inherited from DireSplitting
double	renormMultFac

string	id

int	correctionOrder

Settings *	settingsPtr

ParticleData *	particleDataPtr

Rndm *	rndmPtr

BeamParticle *	beamAPtr

BeamParticle *	beamBPtr

CoupSM *	coupSMPtr

Info *	infoPtr

DireInfo *	direInfoPtr

bool	is_qcd
	Some short-cuts and string hashes to help avoid string comparisons.

bool	is_qed

bool	is_ewk

bool	is_fsr

bool	is_isr

bool	is_dire

ulong	nameHash

unordered_map< string, double >	kernelVals

DireSplitInfo	splitInfo

shared_ptr< DireSpace >	isr

shared_ptr< DireTimes >	fsr

shared_ptr< DireTimes >	fsrDec

multimap< double, OverheadInfo >	overhead_map

Additional Inherited Members
Static Public Attributes inherited from DireSplittingQCD
static const double	SMALL_TEVOL = 2.0
	The SplittingQCD class.

Member Function Documentation

bool calc	(	const Event &	state = `Event()`,
		int	order = `-1`
	)

virtual

Functions to calculate the kernel from SplitInfo information.

Return kernel for new splitting.

Dummy statement to avoid compiler warnings.

Read all splitting variables.

Calculate argument of alphaS.

Do nothing without other NLO kernels!

Generate state after branching to extract momenta.

Get invariants.

Use only massless for now!

Get invariants.

Endpoint

Quark contribution to cusp terms.

Multiply with LO kernel.

Endpoint contribution zero below kinematical threshold.

Spectrum.

Do nothing below PS cut-off on kT of intermediate gluon, since never produced by PS, hence no underlying Born to correct.

Unsubtracted kernel.

Subtractions for all possible histories.

Overall color factor.

From xa integration volume.

Multiply by 2 since we randomly chose endpoint or fully differential.

Weight of sai-selection.

Remember that this might be an endpoint with vanishing sai.

Insert value of kernel into kernel list.

Create muR-variations.

Multiply with z to project out part where emitted gluon pair is soft, and quark is identified.

Store higher order correction separately.

Store kernel values and return.

Reimplemented from DireSplitting.

double counterTerm	(	double	si1,
		double	si2,
		double	sj1,
		double	sj2,
		double	sij,
		double	s12
	)

Counter-term is zero in unordered phase space.

Multiplicative weight factor to force first eikonal to current outgoing momenta.

Gluon kernel.

Full counter-term

int kinMap ( )

inlinevirtual

Function to return an identifier for the phase space mapping that is used for setting up this splitting. return values: 1 –> Default Dire mapping. 2 –> Dire 1->3 mapping.

Reimplemented from DireSplitting.

double overestimateDiff	(	double	z,
		double	m2dip,
		int	order = `-1`
	)

virtual

Return kernel for new splitting.

Return overestimate for new splitting.

Overestimate by soft + 1/(z+kappa2)

Reimplemented from DireSplitting.

double overestimateInt	(	double	zMinAbs,
		double	zMaxAbs,
		double	pT2Old,
		double	m2dip,
		int	order = `-1`
	)

virtual

New overestimates, z-integrated versions.

Overestimate by soft + 1/(z+kappa2)

Reimplemented from DireSplitting.

virtual vector<int> radAndEmt	(	int	,
		int
	)

inlinevirtual

Return a pair of ids for the radiator and emission after the splitting.

Reimplemented from DireSplittingQCD.

vector< pair< int, int > > radAndEmtCols	(	int	iRad,
		int	colType,
		Event	state
	)

virtual

Also remember colors for "intermediate" particles in 1->3 splitting.

Reimplemented from DireSplitting.

double zSplit	(	double	zMinAbs,
		double	zMaxAbs,
		double	m2dip
	)

virtual

Pick z for new splitting.

Pick according to soft + 1/(z+kappa2)

Reimplemented from DireSplitting.

The documentation for this class was generated from the following files:

include/Pythia8/DireSplittingsQCD.h
src/DireSplittingsQCD.cc

Public Member Functions

Public Attributes

Additional Inherited Members

Member Function Documentation