ShowerModel Class Reference

#include <ShowerModel.h>

Inheritance diagram for ShowerModel:

Public Member Functions
	ShowerModel ()=default
	Empty constructor.
virtual	~ShowerModel ()
	Empty virtual destructor.
virtual bool	init (MergingPtr mergPtrIn, MergingHooksPtr mergHooksPtrIn, PartonVertexPtr partonVertexPtrIn, WeightContainer *weightContainerPtrIn)=0
virtual bool	initAfterBeams ()=0
virtual TimeShowerPtr	getTimeShower () const
	Access the pointers to the different model components.
virtual TimeShowerPtr	getTimeDecShower () const
virtual SpaceShowerPtr	getSpaceShower () const
virtual MergingPtr	getMerging () const
virtual MergingHooksPtr	getMergingHooks () const
Public Member Functions inherited from PhysicsBase
void	initInfoPtr (Info &infoPtrIn)
	This function is called from above for physics objects used in a run. More...
virtual	~PhysicsBase ()
	Empty virtual destructor.
bool	flag (string key) const
	Shorthand to read settings values.
int	mode (string key) const
double	parm (string key) const
string	word (string key) const
vector< bool >	fvec (string key) const
vector< int >	mvec (string key) const
vector< double >	pvec (string key) const
vector< string >	wvec (string key) const

Protected Attributes
TimeShowerPtr	timesPtr {}
	The object responsible for generating time-like showers.
TimeShowerPtr	timesDecPtr {}
	The object responsible for generating time-like showers in decays.
SpaceShowerPtr	spacePtr {}
	The object responsible for generating space-like showers.
MergingPtr	mergingPtr {}
	The object responsible for merging with matrix elements.
MergingHooksPtr	mergingHooksPtr {}
	The object responsible for user modifications to the merging.
Protected Attributes inherited from PhysicsBase
Info *	infoPtr = {}
Settings *	settingsPtr = {}
	Pointer to the settings database.
ParticleData *	particleDataPtr = {}
	Pointer to the particle data table.
Logger *	loggerPtr = {}
	Pointer to logger.
HadronWidths *	hadronWidthsPtr = {}
	Pointer to the hadron widths data table.
Rndm *	rndmPtr = {}
	Pointer to the random number generator.
CoupSM *	coupSMPtr = {}
	Pointers to SM and SUSY couplings.
CoupSUSY *	coupSUSYPtr = {}
BeamSetup *	beamSetupPtr = {}
BeamParticle *	beamAPtr = {}
BeamParticle *	beamBPtr = {}
BeamParticle *	beamPomAPtr = {}
BeamParticle *	beamPomBPtr = {}
BeamParticle *	beamGamAPtr = {}
BeamParticle *	beamGamBPtr = {}
BeamParticle *	beamVMDAPtr = {}
BeamParticle *	beamVMDBPtr = {}
PartonSystems *	partonSystemsPtr = {}
	Pointer to information on subcollision parton locations.
SigmaTotal *	sigmaTotPtr = {}
	Pointers to the total/elastic/diffractive cross sections.
SigmaCombined *	sigmaCmbPtr = {}
set< PhysicsBase * >	subObjects
UserHooksPtr	userHooksPtr

Additional Inherited Members
Public Types inherited from PhysicsBase
enum	Status {   INCOMPLETE = -1, COMPLETE = 0, CONSTRUCTOR_FAILED, INIT_FAILED,   LHEF_END, LOWENERGY_FAILED, PROCESSLEVEL_FAILED, PROCESSLEVEL_USERVETO,   MERGING_FAILED, PARTONLEVEL_FAILED, PARTONLEVEL_USERVETO, HADRONLEVEL_FAILED,   CHECK_FAILED, OTHER_UNPHYSICAL, HEAVYION_FAILED, HADRONLEVEL_USERVETO }
	Enumerate the different status codes the event generation can have.
Protected Member Functions inherited from PhysicsBase
	PhysicsBase ()
	Default constructor.
virtual void	onInitInfoPtr ()
virtual void	onBeginEvent ()
	This function is called in the very beginning of each Pythia::next call.
virtual void	onEndEvent (Status)
virtual void	onStat ()
	This function is called from the Pythia::stat() call.
void	registerSubObject (PhysicsBase &pb)
	Register a sub object that should have its information in sync with this.

Detailed Description

ShowerModel is the base class for handling parton-shower algorithms, including merging methods.

Member Function Documentation

virtual bool init ( MergingPtr  mergPtrIn, MergingHooksPtr  mergHooksPtrIn, PartonVertexPtr  partonVertexPtrIn, WeightContainer *  weightContainerPtrIn  )

pure virtual

Function called from Pythia after the basic pointers has been set. Derived classes should create objects of the specific model objects to be used. Pointers to merging and merging hooks may be overwritten in derived classes.

Implemented in Dire, SimpleShowerModel, and Vincia.

virtual bool initAfterBeams ( )

pure virtual

Function called from Pythia after the beam particles have been set up, so that showers may be initialized after the beams are initialized.

Implemented in Dire, SimpleShowerModel, and Vincia.

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

• include/Pythia8/ShowerModel.h