TrialIFSplitK Class Reference

K splitting trial function for initial-final, g -> qqbar. More...

#include <VinciaISR.h>

Inheritance diagram for TrialIFSplitK:

Public Member Functions
virtual string	name () override
	Name of trial generator.
virtual double	aTrial (double saj, double sjk, double sAK) override
	K splitting trial function for IF (derived base class), g->qqbar. More...
virtual double	getQ2 (double saj, double sjk, double sAK) override
	Evolution scale.
virtual double	getQ2max (double sAK, double eA, double eBeamUsed) override
virtual double	genQ2run (double q2old, double sAK, double zMin, double zMax, double colFac, double PDFratio, double b0, double kR, double Lambda, double eA, double eK, double headroomFac=1.0, double enhanceFac=1.0) override
	Generate a new Q value, with first-order running alphaS. More...
virtual double	genQ2 (double q2old, double sAK, double zMin, double zMax, double colFac, double alphaSvalue, double PDFratio, double eA, double eK, double headroomFac=1.0, double enhanceFac=1.0) override
	Generate a new Q value, with constant trial alphaS. More...
virtual double	genZ (double zMin, double zMax) override
	Generate a new zeta value in [zMin,zMax].
virtual double	getIz (double zMin, double zMax) override
	The zeta integral.
virtual double	getZmin (double Qt2, double sAK, double eA, double eBeamUsed) override
	The zeta boundaries, for a given value of the evolution scale.
virtual double	getZmax (double Qt2, double sAK, double eA, double eBeamUsed) override
virtual double	getS1j (double Qt2, double zeta, double sAK) override
	Inverse transforms to obtain saj and sjk from Qt2 and zeta. More...
virtual double	getSj2 (double Qt2, double zeta, double sAK) override
virtual double	trialPDFratio (BeamParticle *beamAPtr, BeamParticle *beamBPtr, int iSys, int idA, int idK, double eA, double eK, double Qt2A, double Qt2B) override
	Trial PDF ratio.
Public Member Functions inherited from TrialGeneratorISR
	TrialGeneratorISR ()
	Constructor.
void	initPtr (Info *infoPtrIn)
	Initialize pointers. More...
virtual void	init (double mcIn, double mbIn)
	Initialize. More...
virtual double	genQ2thres (double q2old, double sAB, double zMin, double zMax, double colFac, double alphaSvalue, double PDFratio, int idA, int idB, double eA, double eB, bool useMpdf, double headroomFac=1.0, double enhanceFac=1.0)
virtual double	getTrialPDFratio ()
	Return last trial PDF ratio.
bool	checkInit ()
	Check initialization.
int	trialFlav ()
	Return the last trial flavor.

Additional Inherited Members
Protected Attributes inherited from TrialGeneratorISR
Info *	infoPtr {}
	Pointers.
Rndm *	rndmPtr {}
Settings *	settingsPtr {}
Logger *	loggerPtr {}
bool	useMevolSav
	Use m or pT evolution for collinear singularities.
double	shhSav
	s for hadron hadron.
int	trialFlavSav
	For conversion trial generators.
int	nGtoQISRSav
double	mbSav
	Masses.
double	mcSav
bool	sectorShower
	Doing a sector shower?
double	trialPDFratioSav
	Saved trial PDF ratio and trial tolerance.
double	TINYPDFtrial

Detailed Description

K splitting trial function for initial-final, g -> qqbar.

Member Function Documentation

double aTrial ( double  saj, double  sjk, double  sAK  )

overridevirtual

K splitting trial function for IF (derived base class), g->qqbar.

Trial antenna function. This trial uses the xf overestimate so no extra x factor.

Trial antenna function.

Reimplemented from TrialGeneratorISR.

double genQ2 ( double  q2old, double  sAK, double  zMin, double  zMax, double  colFac, double  alphaSvalue, double  PDFratio, double  eA, double  eK, double  headroomFac = 1.0, double  enhanceFac = 1.0  )

overridevirtual

Generate a new Q value, with constant trial alphaS.

Sanity checks.

Enhance factors < 1: do not modify trial probability.

Generate new trial scale.

Reimplemented from TrialGeneratorISR.

double genQ2run ( double  q2old, double  sAK, double  zMin, double  zMax, double  colFac, double  PDFratio, double  b0, double  kR, double  Lambda, double  eA, double  eK, double  headroomFac = 1.0, double  enhanceFac = 1.0  )

overridevirtual

Generate a new Q value, with first-order running alphaS.

Sanity checks.

Enhance factors < 1: do not modify trial probability.

Generate new trial scale.

Reimplemented from TrialGeneratorISR.

double getS1j ( double  Qt2, double  zeta, double  sAK  )

overridevirtual

Inverse transforms to obtain saj and sjk from Qt2 and zeta.

If zeta < 0, swap invariants.

Sanity check.

Reimplemented from TrialGeneratorISR.

double getSj2 ( double  Qt2, double  zeta, double  sAK  )

overridevirtual

If zeta < 0, swap invariants.

Sanity check.

Reimplemented from TrialGeneratorISR.

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

• include/Pythia8/VinciaISR.h
• src/VinciaISR.cc