The StandardXComb class inherits from the more general XComb class which stores all information about the generation of a hard sub-proces for a given pair of incoming particles, a pair of extracted partons, etc. More...

#include <StandardXComb.h>

Inheritance diagram for ThePEG::StandardXComb:

[legend]

Public Types
typedef MEBase::DiagramVector	DiagramVector
	A vector of DiagramBase objects.

typedef MEBase::DiagramIndex	DiagramIndex
	A vector of indices.

Public Types inherited from ThePEG::XComb
typedef map< cPPtr, PBIPtr >	PartonBinInstanceMap
	A map of PartonBinInstance objects indexed by the extracted parton.

Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int	CounterType
	The integer type used for counting.

Public Member Functions
Standard constructors and destructors.
	StandardXComb (Energy newMaxEnergy, const cPDPair &inc, tEHPtr newEventHandler, tSubHdlPtr newSubProcessHandler, tPExtrPtr newExtractor, tCascHdlPtr newCKKW, const PBPair &newPartonBins, tCutsPtr newCuts, tMEPtr newME, const DiagramVector &newDiagrams, bool mir, tStdXCombPtr newHead=tStdXCombPtr())
	Standard constructor.

	StandardXComb (tStdXCombPtr newHead, const PBPair &newPartonBins, tMEPtr newME, const DiagramVector &newDiagrams)
	Constructor given a head xcomb.

	StandardXComb ()
	Default constructor.

virtual	~StandardXComb ()
	Destructor.

	StandardXComb (tMEPtr me, const tPVector &parts, DiagramIndex i)
	Constructor used by MEBase to create a temporary object to store info.

Utilities for incoming partons.
void	recreatePartonBinInstances (Energy2 scale)
	Properly setup the PartonBinInstance objects provided a sub process has been constructed using this XComb.

void	refillPartonBinInstances (const double *r)
	Fill the variables needed to generate remnants; momenta will be used from the partons set in this xcomb, but random numbers need to be provided to (re)generate variables not fixed by the incoming partons.

bool	setIncomingPartons (tStdXCombPtr labHead=tStdXCombPtr())
	Setup information on incoming partons depending on the information previously supplied through the choice of diagram and incoming momenta in the first two entries of meMomenta().

void	fill (const PPair &newParticles, const PPair &newPartons, const vector< Lorentz5Momentum > &newMEMomenta, const DVector &newLastRandomNumbers=DVector())
	Fill phase space information as far as possible.

Access the assigned objects used in the generation.
tcSubHdlPtr	subProcessHandler () const
	Return a pointer to the corresponding sub-process handler.

tMEPtr	matrixElement () const
	The matrix element to be used.

tStdXCombPtr	head () const
	Return a pointer to the head XComb this XComb depends on.

void	head (tStdXCombPtr headXC)
	Set the head XComb pointer.

Selector< tStdXCombPtr > &	projectors ()
	Return a selector object of xcombs to choose subprocesses different than the one currently integrated.

const Selector< tStdXCombPtr > &	projectors () const
	Return a selector object of xcombs to choose subprocesses different than the one currently integrated.

tStdXCombPtr	lastProjector () const
	Return a pointer to a projector xcomb which will generate a subprocess different from the one just integrated.

void	lastProjector (tStdXCombPtr pxc)
	Set a pointer to a projector xcomb which will generate a subprocess different from the one just integrated.

Main functions used for the generation.
virtual bool	checkInit ()
	Try to determine if this subprocess is at all possible.

virtual int	nDim () const
	The number of dimensions of the phase space used to generate this process.

const pair< int, int > &	partonDimensions () const
	Return the parton extraction dimensions.

bool	willPassCuts ()
	Return true, if the current configuration will pass the cuts.

double	cutWeight () const
	Return the cut weight encountered from fuzzy cuts.

virtual void	clean ()
	Reset all saved data about last generated phasespace point;.

bool	kinematicsGenerated () const
	Return true, if kinematics have already been generated.

void	didGenerateKinematics ()
	Indicate that kinematics have been generated.

virtual CrossSection	dSigDR (const pair< double, double > ll, int nr, const double *r)
	Generate a phase space point from a vector r of nr numbers in the interval ]0,1[ and return the corresponding differential cross section.

CrossSection	dSigDR (const double *r)
	If this XComb has a head XComb, return the cross section differential in the variables previously supplied.

virtual map< string, double >	generateOptionalWeights ()
	If variations are available for the subprocess handled, generate and return a map of optional weights to be included for the event; this version defaults to an implementation in MEBase but can be overloaded by inheriting XComb objects.

double	lastPDFWeight () const
	Return the PDF weight used in the last call to dSigDR.

CrossSection	lastCrossSection () const
	Return the cross section calculated in the last call to dSigDR.

void	checkReshufflingNeeds ()
	Check if a reshuffling is required when constructing the hard subprocess.

bool	needsReshuffling () const
	Return true if a reshuffling is required when constructing the hard subprocess.

void	reshuffle (vector< Lorentz5Momentum > &) const
	Perform the reshuffling from hardProcessMass to mass values, given outgoing momenta.

virtual tSubProPtr	construct ()
	Construct a sub-process object from the information available.

Functions used for collecting statistics.
virtual const XSecStat &	stats () const
	The statistics object for this XComb.

virtual void	select (double weight)
	Select the current event.

virtual void	accept ()
	Accept the current event assuming it was previously selcted.

void	reweight (double oldWeight, double newWeight)
	Reweight a selected and accepted event.

virtual void	reject (double weight=1.0)
	Reject the current event assuming it was previously accepted.

virtual void	reset ()
	Reset statistics.

Access information used by the MEBase object.
const DiagramVector &	diagrams () const
	The diagrams used by the matrix element.

bool	mirror () const
	True if the TreeDiagram's for this matrix element should in fact be mirrored before used to create an actual sub-rocess.

const vector< Lorentz5Momentum > &	meMomenta () const
	Return the momenta of the partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

tcDiagPtr	lastDiagram () const
	Return the last selected diagram.

const cPDVector &	mePartonData () const
	Return the parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

DiagramIndex	lastDiagramIndex () const
	Return the index of the last selected diagram.

const DVector &	meInfo () const
	Get information saved by the matrix element in the calculation of the cross section to be used later when selecting diagrams and colour flow.

void	meInfo (const DVector &info)
	Set information saved by the matrix element in the calculation of the cross section to be used later when selecting diagrams and colour flow.

const DVector &	lastRandomNumbers () const
	Return the random numbers used to generate the last phase space point, if the matrix element requested so.

double	jacobian () const
	Get the last jacobian obtained when generating the kinematics for the call to dSigHatDR.

double	lastME2 () const
	Return the matrix element squared as calculated for the last phase space point.

double	lastPreweight () const
	Return the last preweight factor.

CrossSection	lastMECrossSection () const
	Return the partonic cross section as calculated for the last phase space point.

double	lastMEPDFWeight () const
	Return the PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights.

double	lastMECouplings () const
	Return the coupling factor as calculated for the lats phase space point.

virtual void	newSubProcess (bool group=false)
	Construct the corresponding SubProcess object if it hasn't been done before.

vector< Lorentz5Momentum > &	meMomenta ()
	Return the momenta of the partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

DVector &	lastRandomNumbers ()
	Access the random numbers used to generate the last phase space point, if the matrix element requested so.

cPDVector &	mePartonData ()
	Return the parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

void	externalDiagram (tcDiagPtr diag)
	Set a diagram to be used instead of the one selected by the matrix element.

void	lastDiagramIndex (DiagramIndex i)
	Set the last selected diagram.

void	lastPDFWeight (double w)
	Set the PDF weight used in the last call to dSigDR.

void	lastCrossSection (CrossSection s)
	Set the cross section calculated in the last call to dSigDR.

void	jacobian (double j)
	Set the last jacobian obtained when generating the kinematics for the call to dSigHatDR.

void	lastME2 (double v)
	Set the matrix element squared as calculated for the last phase space point.

void	lastPreweight (double w)
	Set the last preweight factor.

void	lastMECrossSection (CrossSection v)
	Set the partonic cross section as calculated for the last phase space point.

void	lastMEPDFWeight (double v)
	Set the PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights.

void	lastMECouplings (double v)
	Set the coupling factor.

Public Member Functions inherited from ThePEG::XComb
	XComb (Energy newMaxEnergy, const cPDPair &inc, tEHPtr newEventHandler, tPExtrPtr newExtractor, tCascHdlPtr newCKKW, const PBPair &newPartonBins, tCutsPtr newCuts)
	Standard constructor.

	XComb ()
	Default constructor.

virtual	~XComb ()
	Destructor.

const EventHandler &	eventHandler () const
	Return a reference to the corresponding collision handler.

tEHPtr	eventHandlerPtr () const
	Return a pointer to the corresponding collision handler.

tPExtrPtr	pExtractor () const
	A pointer to the parton extractor.

tCutsPtr	cuts () const
	A pointer to the kinematical cuts.

tCascHdlPtr	CKKWHandler () const
	Return a possibly null pointer to a CascadeHandler to be used for CKKW-reweighting.

const cPDPair &	particles () const
	The incoming particle types.

const cPDPair &	partons () const
	The incoming parton types.

const PBPair &	partonBins () const
	Additional information about the incoming partons.

Energy	maxEnergy () const
	The maximum cm energy for this process.

bool	empty () const
	Returns true if this XComb does not correspond to a proper subprocess generation.

void	setPartonBinInstances (PBIPair pbis, Energy2 scale)
	Set information about currently generated partons.

void	prepare (const PPair &)
	Prepare this XComb for producing a sub-process.

const PPair &	lastParticles () const
	Return the pair of incoming particle instances.

const PPair &	lastPartons () const
	Return the pair of incoming parton instances.

void	lastPartons (PPair pp)
	Set the pair of incoming parton instances.

tSubProPtr	subProcess () const
	Return the SubProcess object corresponding to the last generated sub-process.

void	subProcess (tSubProPtr)
	Set the SubProcess object corresponding to the last generated sub-process.

PartonBinInstanceMap &	partonBinInstanceMap ()
	Access the parton bin instance map (used by the parton extractor)

const PartonBinInstanceMap &	partonBinInstanceMap () const
	Return the parton bin instance map (used by the parton extractor)

const PBIPair &	partonBinInstances () const
	Additional information about the incoming partons.

PBIPair &	partonBinInstances ()
	Additional information about the incoming partons.

tPBIPtr	partonBinInstance (tcPPtr) const
	Return the corresponding parton bin instance for a given extracted parton.

Energy2	lastS () const
	The last generated total energy squared of the incoming particles.

void	lastS (Energy2 s)
	Set the last generated total energy squared of the incoming particles.

Energy2	lastSHat () const
	The last generated total energy squared of the incoming prtons.

void	lastSHat (Energy2 sh)
	Set the last generated total energy squared of the incoming prtons.

double	lastTau () const
	lastSHat()/lastS().

double	lastY () const
	The last generated rapidity of the hard scattering sub-system.

void	lastY (double y)
	Set the last generated rapidity of the hard scattering sub-system.

double	lastP1 () const
	Log of one over the momentum fraction of the first incoming particle w.r.t.

double	lastP2 () const
	Log of one over the momentum fraction of the second incoming particle w.r.t.

void	lastP1P2 (pair< double, double > pp)
	Set log of one over the momentum fraction of the incoming particles w.r.t.

double	lastL1 () const
	Log of one over the first incoming parton momentum fraction w.r.t.

double	lastL2 () const
	Log of one over the second incoming parton momentum fraction w.r.t.

void	lastL1L2 (pair< double, double >)
	Set log of one over the incoming parton momentum fractions w.r.t.

double	lastX1 () const
	The first incoming parton momentum fraction w.r.t.

double	lastX2 () const
	The second incoming parton momentum fraction w.r.t.

void	lastX1X2 (pair< double, double >)
	Set the incoming parton momentum fractions w.r.t.

double	lastE1 () const
	Return 1-lastX1() to highest possible precision for x \(\rightarrow\) 1.

double	lastE2 () const
	Return 1-lastX2() to highest possible precision for x \(\rightarrow\) 1.

void	lastE1E2 (pair< double, double >)
	Set one minus the incoming parton momentum fractions w.r.t.

Energy2	lastScale () const
	Get the last chosen scale of the hard scattering.

void	lastScale (Energy2 Q2)
	Set the last chosen scale of the hard scattering.

Energy2	lastCentralScale () const
	Get the last chosen central scale of the hard scattering.

void	lastCentralScale (Energy2 Q2)
	Set the last chosen central scale of the hard scattering.

Energy2	lastShowerScale () const
	Get the last chosen shower scale.

void	lastShowerScale (Energy2 Q2)
	Set the last chosen showr scale.

double	lastAlphaS () const
	Get the \(\alpha_S\) used in the hard scattering.

void	lastAlphaS (double a)
	Set the \(\alpha_S\) used in the hard scattering.

double	lastAlphaEM () const
	Get the \(\alpha_{EM}\) used in the hard scattering.

void	lastAlphaEM (double a)
	Set the \(\alpha_{EM}\) used in the hard scattering.

bool	hasMeta (int id) const
	Check for meta information.

template<class T >
void	meta (int id, T &ref)
	Set meta information.

void	eraseMeta (int id)
	Erase meta information.

template<class T >
T &	meta (int id) const
	Retrieve meta information.

void	setPartonBinInfo ()
	Set the local parton bin info objects for this XComb.

void	createPartonBinInstances ()
	Create PartonBinInstance objects for this XComb.

void	lastParticles (const PPair &p)
	Set the pair of incoming particle instances.

void	resetPartonBinInstances (const PBIPair &newBins)
	Set information about currently generated partons.

void	persistentOutput (PersistentOStream &os) const
	Function used to write out object persistently.

void	persistentInput (PersistentIStream &is, int version)
	Function used to read in object persistently.

Public Member Functions inherited from ThePEG::Base
virtual	~Base ()
	The virtual destructor.

void	debug () const
	Print out debugging information for this object on std::cerr.

virtual void	debugme () const
	Print out debugging information for this object on std::cerr.

Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType	referenceCount () const
	Return the reference count.

Friends
class	MEBase
	MEBase needs to be a friend.

Functions used by the persistent I/O system.
tSubHdlPtr	theSubProcessHandler
	The corresponding sub-process handler.

tMEPtr	theME
	The matrix element to be used.

XSecStat	theStats
	Statistics gathering for this XComb.

DiagramVector	theDiagrams
	The diagrams used by the matrix element.

bool	isMirror
	True if the TreeDiagram's for this matrix element should in fact be mirrored before used to create an actual sub-rocess.

int	theNDim
	The number of dimensions of the phase space used to generate this process.

bool	theKinematicsGenerated
	True, if kinematics have already been generated.

vector< Lorentz5Momentum >	theMEMomenta
	The momenta of the partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

cPDVector	theMEPartonData
	The parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

tcDiagPtr	theExternalDiagram
	A diagram to be used instead of the one selected by the matrix element.

DiagramIndex	theLastDiagramIndex
	The last selected tree diagram.

DVector	theMEInfo
	Information saved by the matrix element in the calculation of the cross section to be used later when selecting diagrams and colour flow.

DVector	theLastRandomNumbers
	The random numbers used to generate the last phase space point, if the matrix element requested so.

double	theLastPDFWeight
	The PDF weight used in the last call to dSigDR.

CrossSection	theLastCrossSection
	The cross section calculated in the last call to dSigDR.

double	theLastJacobian
	Save the last jacobian obtained when generating the kinematics for the call to dSigHatDR.

double	theLastME2
	The matrix element squared as calculated for the last phase space point.

double	theLastPreweight
	The last preweight factor.

CrossSection	theLastMECrossSection
	The partonic cross section as calculated for the last phase space point.

double	theLastMEPDFWeight
	The PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights.

double	theLastMECouplings
	The coupling factor.

tStdXCombPtr	theHead
	A pointer to the head XComb this XComb depends on.

Selector< tStdXCombPtr >	theProjectors
	A selector object of xcombs to choose subprocesses different than the one currently integrated.

tStdXCombPtr	theProjector
	A pointer to a projector xcomb which will generate a subprocess different from the one just integrated.

bool	checkedCuts
	True, if cuts have already been checked.

bool	passedCuts
	The result of the last call to willPassCuts.

double	theCutWeight
	The cut weight encountered from fuzzy cuts.

bool	theNeedsReshuffling
	True if a reshuffling is required when constructing the hard subprocess.

pair< int, int >	partonDims
	The number of dimensions of the phase space used for each of the incoming partons.

static ClassDescription< StandardXComb >	initStandardXComb
	Describe a concrete class with persistent data.

void	persistentOutput (PersistentOStream &os) const
	Function used to write out object persistently.

void	persistentInput (PersistentIStream &is, int version)
	Function used to read in object persistently.

static void	Init ()
	Standard Init function used to initialize the interface.

double	reshuffleEquation (double, const vector< pair< Energy2, Energy2 > > &, Energy2) const
	Calculate the reshuffling equation given the coefficients.

double	solveReshuffleEquation (const vector< pair< Energy2, Energy2 > > &, Energy2) const
	Solve the reshuffling equation given the coefficients.

StandardXComb &	operator= (const StandardXComb &)=delete
	Private and non-existent assignment operator.

Additional Inherited Members
Static Public Member Functions inherited from ThePEG::XComb
static void	Init ()
	Standard Init function used to initialize the interface.

Static Public Member Functions inherited from ThePEG::Base
static void	Init ()
	The standard Init function used to initialize the interfaces.

Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long	uniqueId
	The unique ID.

Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
	ReferenceCounted ()
	Default constructor.

	ReferenceCounted (const ReferenceCounted &)
	Copy-constructor.

ReferenceCounted &	operator= (const ReferenceCounted &)
	Assignment.

Detailed Description

The StandardXComb class inherits from the more general XComb class which stores all information about the generation of a hard sub-proces for a given pair of incoming particles, a pair of extracted partons, etc.

This class stores more information related to thestandard process generation scheme in ThePEG, such as the PartonExtractor and MEBase object used. It also does some of the administration of the process generation.

The main function is dSigDR() which returns the differential cross section w.r.t. a given vector of random numbers in the interval ]0,1[. In the initialization this is used to pre-sample the phase space. In the generation phase it is used to give the cross section for a phase space point, and if this StandardXComb is chosen the construct() function is called to generate the actual sub-process.

See also: ParonExtractor; MEBase; Cuts; StdXCombGroup

Definition at line 53 of file StandardXComb.h.

Member Typedef Documentation

◆ DiagramIndex

typedef MEBase::DiagramIndex ThePEG::StandardXComb::DiagramIndex

A vector of indices.

Definition at line 61 of file StandardXComb.h.

◆ DiagramVector

typedef MEBase::DiagramVector ThePEG::StandardXComb::DiagramVector

A vector of DiagramBase objects.

Definition at line 58 of file StandardXComb.h.

Member Function Documentation

◆ accept()

virtual void ThePEG::StandardXComb::accept ( )

inlinevirtual

Accept the current event assuming it was previously selcted.

Definition at line 308 of file StandardXComb.h.

References ThePEG::XSecStat::accept(), and theStats.

◆ clean()

virtual void ThePEG::StandardXComb::clean ( )

virtual

Reset all saved data about last generated phasespace point;.

Reimplemented from ThePEG::XComb.

Reimplemented in ThePEG::StdXCombGroup.

◆ construct()

virtual tSubProPtr ThePEG::StandardXComb::construct ( )

virtual

Construct a sub-process object from the information available.

Reimplemented in ThePEG::StdXCombGroup.

◆ cutWeight()

double ThePEG::StandardXComb::cutWeight ( ) const

inline

Return the cut weight encountered from fuzzy cuts.

Definition at line 218 of file StandardXComb.h.

References theCutWeight.

◆ diagrams()

const DiagramVector & ThePEG::StandardXComb::diagrams ( ) const

inline

The diagrams used by the matrix element.

Definition at line 335 of file StandardXComb.h.

References theDiagrams.

Referenced by lastDiagram().

◆ didGenerateKinematics()

void ThePEG::StandardXComb::didGenerateKinematics ( )

inline

Indicate that kinematics have been generated.

Definition at line 233 of file StandardXComb.h.

References theKinematicsGenerated.

◆ dSigDR() [1/2]

CrossSection ThePEG::StandardXComb::dSigDR ( const double * r )

If this XComb has a head XComb, return the cross section differential in the variables previously supplied.

The PDF weight is taken from the lastPDFWeight supplied by the head XComb object.

◆ dSigDR() [2/2]

virtual CrossSection ThePEG::StandardXComb::dSigDR	(	const pair< double, double >	ll,
		int	nr,
		const double *	r
	)

virtual

Generate a phase space point from a vector r of nr numbers in the interval ]0,1[ and return the corresponding differential cross section.

Reimplemented in ThePEG::StdXCombGroup.

◆ externalDiagram()

void ThePEG::StandardXComb::externalDiagram ( tcDiagPtr diag )

inline

Set a diagram to be used instead of the one selected by the matrix element.

Definition at line 463 of file StandardXComb.h.

References theExternalDiagram.

◆ head() [1/2]

tStdXCombPtr ThePEG::StandardXComb::head ( ) const

inline

Return a pointer to the head XComb this XComb depends on.

May return NULL, if this is not a member of a XComb group.

Definition at line 159 of file StandardXComb.h.

References theHead.

◆ head() [2/2]

void ThePEG::StandardXComb::head ( tStdXCombPtr headXC )

inline

Set the head XComb pointer.

Definition at line 164 of file StandardXComb.h.

References theHead.

◆ jacobian() [1/2]

double ThePEG::StandardXComb::jacobian ( ) const

inline

Get the last jacobian obtained when generating the kinematics for the call to dSigHatDR.

Definition at line 396 of file StandardXComb.h.

References theLastJacobian.

◆ jacobian() [2/2]

void ThePEG::StandardXComb::jacobian ( double j )

inline

Set the last jacobian obtained when generating the kinematics for the call to dSigHatDR.

Definition at line 484 of file StandardXComb.h.

References theLastJacobian.

◆ kinematicsGenerated()

bool ThePEG::StandardXComb::kinematicsGenerated ( ) const

inline

Return true, if kinematics have already been generated.

Definition at line 228 of file StandardXComb.h.

References theKinematicsGenerated.

◆ lastCrossSection() [1/2]

CrossSection ThePEG::StandardXComb::lastCrossSection ( ) const

inline

Return the cross section calculated in the last call to dSigDR.

Definition at line 266 of file StandardXComb.h.

References theLastCrossSection.

◆ lastCrossSection() [2/2]

void ThePEG::StandardXComb::lastCrossSection ( CrossSection s )

inline

Set the cross section calculated in the last call to dSigDR.

Definition at line 478 of file StandardXComb.h.

References theLastCrossSection.

◆ lastDiagram()

tcDiagPtr ThePEG::StandardXComb::lastDiagram ( ) const

inline

Return the last selected diagram.

Definition at line 353 of file StandardXComb.h.

References diagrams(), lastDiagramIndex(), and theExternalDiagram.

◆ lastDiagramIndex() [1/2]

DiagramIndex ThePEG::StandardXComb::lastDiagramIndex ( ) const

inline

Return the index of the last selected diagram.

Definition at line 369 of file StandardXComb.h.

References theLastDiagramIndex.

Referenced by lastDiagram().

◆ lastDiagramIndex() [2/2]

void ThePEG::StandardXComb::lastDiagramIndex ( DiagramIndex i )

inline

Set the last selected diagram.

Definition at line 468 of file StandardXComb.h.

References theLastDiagramIndex.

◆ lastME2() [1/2]

double ThePEG::StandardXComb::lastME2 ( ) const

inline

Return the matrix element squared as calculated for the last phase space point.

This may optionally be used by a matrix element for caching.

Definition at line 403 of file StandardXComb.h.

References theLastME2.

◆ lastME2() [2/2]

void ThePEG::StandardXComb::lastME2 ( double v )

inline

Set the matrix element squared as calculated for the last phase space point.

This may optionally be used by a matrix element for caching.

Definition at line 491 of file StandardXComb.h.

References theLastME2.

◆ lastMECouplings() [1/2]

double ThePEG::StandardXComb::lastMECouplings ( ) const

inline

Return the coupling factor as calculated for the lats phase space point.

Definition at line 429 of file StandardXComb.h.

References theLastMECouplings.

◆ lastMECouplings() [2/2]

void ThePEG::StandardXComb::lastMECouplings ( double v )

inline

Set the coupling factor.

Definition at line 516 of file StandardXComb.h.

References theLastMECouplings.

◆ lastMECrossSection() [1/2]

CrossSection ThePEG::StandardXComb::lastMECrossSection ( ) const

inline

Return the partonic cross section as calculated for the last phase space point.

This may optionally be used by a matrix element for caching.

Definition at line 415 of file StandardXComb.h.

References theLastMECrossSection.

◆ lastMECrossSection() [2/2]

void ThePEG::StandardXComb::lastMECrossSection ( CrossSection v )

inline

Set the partonic cross section as calculated for the last phase space point.

This may optionally be used by a matrix element for caching.

Definition at line 503 of file StandardXComb.h.

References theLastMECrossSection.

◆ lastMEPDFWeight() [1/2]

double ThePEG::StandardXComb::lastMEPDFWeight ( ) const

inline

Return the PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights.

This may optionally be used by a matrix element for caching.

Definition at line 423 of file StandardXComb.h.

References theLastMEPDFWeight.

◆ lastMEPDFWeight() [2/2]

void ThePEG::StandardXComb::lastMEPDFWeight ( double v )

inline

Set the PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights.

This may optionally be used by a matrix element for caching.

Definition at line 511 of file StandardXComb.h.

References theLastMEPDFWeight.

◆ lastPDFWeight() [1/2]

double ThePEG::StandardXComb::lastPDFWeight ( ) const

inline

Return the PDF weight used in the last call to dSigDR.

Definition at line 261 of file StandardXComb.h.

References theLastPDFWeight.

◆ lastPDFWeight() [2/2]

void ThePEG::StandardXComb::lastPDFWeight ( double w )

inline

Set the PDF weight used in the last call to dSigDR.

Definition at line 473 of file StandardXComb.h.

References theLastPDFWeight.

◆ lastPreweight() [1/2]

double ThePEG::StandardXComb::lastPreweight ( ) const

inline

Return the last preweight factor.

Definition at line 408 of file StandardXComb.h.

References theLastPreweight.

◆ lastPreweight() [2/2]

void ThePEG::StandardXComb::lastPreweight ( double w )

inline

Set the last preweight factor.

Definition at line 496 of file StandardXComb.h.

References theLastPreweight.

◆ lastProjector() [1/2]

tStdXCombPtr ThePEG::StandardXComb::lastProjector ( ) const

inline

Return a pointer to a projector xcomb which will generate a subprocess different from the one just integrated.

Definition at line 182 of file StandardXComb.h.

References theProjector.

◆ lastProjector() [2/2]

void ThePEG::StandardXComb::lastProjector ( tStdXCombPtr pxc )

inline

Set a pointer to a projector xcomb which will generate a subprocess different from the one just integrated.

Definition at line 188 of file StandardXComb.h.

References theProjector.

◆ lastRandomNumbers() [1/2]

DVector & ThePEG::StandardXComb::lastRandomNumbers ( )

inline

Access the random numbers used to generate the last phase space point, if the matrix element requested so.

Definition at line 450 of file StandardXComb.h.

References theLastRandomNumbers.

◆ lastRandomNumbers() [2/2]

const DVector & ThePEG::StandardXComb::lastRandomNumbers ( ) const

inline

Return the random numbers used to generate the last phase space point, if the matrix element requested so.

Definition at line 390 of file StandardXComb.h.

References theLastRandomNumbers.

◆ matrixElement()

tMEPtr ThePEG::StandardXComb::matrixElement ( ) const

inline

The matrix element to be used.

Definition at line 152 of file StandardXComb.h.

References theME.

◆ meInfo() [1/2]

const DVector & ThePEG::StandardXComb::meInfo ( ) const

inline

Get information saved by the matrix element in the calculation of the cross section to be used later when selecting diagrams and colour flow.

Definition at line 376 of file StandardXComb.h.

References theMEInfo.

◆ meInfo() [2/2]

void ThePEG::StandardXComb::meInfo ( const DVector & info )

inline

Set information saved by the matrix element in the calculation of the cross section to be used later when selecting diagrams and colour flow.

Definition at line 383 of file StandardXComb.h.

References theMEInfo.

◆ meMomenta() [1/2]

vector< Lorentz5Momentum > & ThePEG::StandardXComb::meMomenta ( )

inline

Return the momenta of the partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

Definition at line 443 of file StandardXComb.h.

References theMEMomenta.

◆ meMomenta() [2/2]

const vector< Lorentz5Momentum > & ThePEG::StandardXComb::meMomenta ( ) const

inline

Return the momenta of the partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

Definition at line 348 of file StandardXComb.h.

References theMEMomenta.

◆ mePartonData() [1/2]

cPDVector & ThePEG::StandardXComb::mePartonData ( )

inline

Return the parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

Definition at line 457 of file StandardXComb.h.

References theMEPartonData.

◆ mePartonData() [2/2]

const cPDVector & ThePEG::StandardXComb::mePartonData ( ) const

inline

Return the parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

Definition at line 364 of file StandardXComb.h.

References theMEPartonData.

◆ mirror()

bool ThePEG::StandardXComb::mirror ( ) const

inline

True if the TreeDiagram's for this matrix element should in fact be mirrored before used to create an actual sub-rocess.

Definition at line 341 of file StandardXComb.h.

References isMirror.

◆ nDim()

virtual int ThePEG::StandardXComb::nDim ( ) const

inlinevirtual

The number of dimensions of the phase space used to generate this process.

Reimplemented in ThePEG::StdXCombGroup.

Definition at line 203 of file StandardXComb.h.

References theNDim.

◆ needsReshuffling()

bool ThePEG::StandardXComb::needsReshuffling ( ) const

inline

Return true if a reshuffling is required when constructing the hard subprocess.

Definition at line 278 of file StandardXComb.h.

References theNeedsReshuffling.

◆ newSubProcess()

virtual void ThePEG::StandardXComb::newSubProcess ( bool group = false )

virtual

Construct the corresponding SubProcess object if it hasn't been done before.

Reimplemented in ThePEG::StdXCombGroup.

◆ partonDimensions()

const pair< int, int > & ThePEG::StandardXComb::partonDimensions ( ) const

inline

Return the parton extraction dimensions.

Definition at line 208 of file StandardXComb.h.

References partonDims.

◆ persistentInput()

void ThePEG::StandardXComb::persistentInput	(	PersistentIStream &	is,
		int	version
	)

Function used to read in object persistently.

Parameters

is	the persistent input stream read from.
version	the version number of the object when written.

◆ persistentOutput()

void ThePEG::StandardXComb::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ projectors() [1/2]

Selector< tStdXCombPtr > & ThePEG::StandardXComb::projectors ( )

inline

Return a selector object of xcombs to choose subprocesses different than the one currently integrated.

Definition at line 170 of file StandardXComb.h.

References theProjectors.

◆ projectors() [2/2]

const Selector< tStdXCombPtr > & ThePEG::StandardXComb::projectors ( ) const

inline

Return a selector object of xcombs to choose subprocesses different than the one currently integrated.

Definition at line 176 of file StandardXComb.h.

References theProjectors.

◆ reject()

virtual void ThePEG::StandardXComb::reject ( double weight = 1.0 )

inlinevirtual

Reject the current event assuming it was previously accepted.

If weighted events are produced, the weight should be the same as the previous call to select(double).

Definition at line 322 of file StandardXComb.h.

References ThePEG::XSecStat::reject(), and theStats.

◆ reset()

virtual void ThePEG::StandardXComb::reset ( )

inlinevirtual

Reset statistics.

Definition at line 327 of file StandardXComb.h.

References ThePEG::XSecStat::reset(), and theStats.

◆ reweight()

void ThePEG::StandardXComb::reweight	(	double	oldWeight,
		double	newWeight
	)

inline

Reweight a selected and accepted event.

Definition at line 313 of file StandardXComb.h.

References ThePEG::XSecStat::reweight(), and theStats.

◆ select()

virtual void ThePEG::StandardXComb::select ( double weight )

inlinevirtual

Select the current event.

It will later be rejected with a probability given by weight.

Definition at line 303 of file StandardXComb.h.

References ThePEG::XSecStat::select(), and theStats.

◆ setIncomingPartons()

bool ThePEG::StandardXComb::setIncomingPartons ( tStdXCombPtr labHead = tStdXCombPtr() )

Setup information on incoming partons depending on the information previously supplied through the choice of diagram and incoming momenta in the first two entries of meMomenta().

Partons are not actually extracted from the incoming particles, though a subprocess detached from the current Event may be created.

◆ stats()

virtual const XSecStat & ThePEG::StandardXComb::stats ( ) const

inlinevirtual

The statistics object for this XComb.

Definition at line 297 of file StandardXComb.h.

References theStats.

◆ subProcessHandler()

tcSubHdlPtr ThePEG::StandardXComb::subProcessHandler ( ) const

inline

Return a pointer to the corresponding sub-process handler.

May be null if the standard process generation in ThePEG was not used.

Definition at line 147 of file StandardXComb.h.

References theSubProcessHandler.

Friends And Related Function Documentation

◆ MEBase

friend class MEBase

friend

MEBase needs to be a friend.

Definition at line 64 of file StandardXComb.h.

Member Data Documentation

◆ checkedCuts

bool ThePEG::StandardXComb::checkedCuts

private

True, if cuts have already been checked.

Definition at line 698 of file StandardXComb.h.

◆ initStandardXComb

ClassDescription<StandardXComb> ThePEG::StandardXComb::initStandardXComb

staticprivate

Describe a concrete class with persistent data.

Definition at line 731 of file StandardXComb.h.

◆ isMirror

bool ThePEG::StandardXComb::isMirror

private

True if the TreeDiagram's for this matrix element should in fact be mirrored before used to create an actual sub-rocess.

Definition at line 567 of file StandardXComb.h.

Referenced by mirror().

◆ partonDims

pair<int,int> ThePEG::StandardXComb::partonDims

protected

The number of dimensions of the phase space used for each of the incoming partons.

Definition at line 581 of file StandardXComb.h.

Referenced by partonDimensions().

◆ passedCuts

bool ThePEG::StandardXComb::passedCuts

private

The result of the last call to willPassCuts.

Definition at line 703 of file StandardXComb.h.

◆ theCutWeight

double ThePEG::StandardXComb::theCutWeight

private

The cut weight encountered from fuzzy cuts.

Definition at line 708 of file StandardXComb.h.

Referenced by cutWeight().

◆ theDiagrams

DiagramVector ThePEG::StandardXComb::theDiagrams

private

The diagrams used by the matrix element.

Definition at line 561 of file StandardXComb.h.

Referenced by diagrams().

◆ theExternalDiagram

tcDiagPtr ThePEG::StandardXComb::theExternalDiagram

private

A diagram to be used instead of the one selected by the matrix element.

Definition at line 607 of file StandardXComb.h.

Referenced by externalDiagram(), and lastDiagram().

◆ theHead

tStdXCombPtr ThePEG::StandardXComb::theHead

private

A pointer to the head XComb this XComb depends on.

May return NULL, if this is not a member of a XComb group.

Definition at line 681 of file StandardXComb.h.

Referenced by head().

◆ theKinematicsGenerated

bool ThePEG::StandardXComb::theKinematicsGenerated

private

True, if kinematics have already been generated.

Definition at line 588 of file StandardXComb.h.

Referenced by didGenerateKinematics(), and kinematicsGenerated().

◆ theLastCrossSection

CrossSection ThePEG::StandardXComb::theLastCrossSection

private

The cross section calculated in the last call to dSigDR.

Definition at line 636 of file StandardXComb.h.

Referenced by lastCrossSection().

◆ theLastDiagramIndex

DiagramIndex ThePEG::StandardXComb::theLastDiagramIndex

private

The last selected tree diagram.

Definition at line 612 of file StandardXComb.h.

Referenced by lastDiagramIndex().

◆ theLastJacobian

double ThePEG::StandardXComb::theLastJacobian

private

Save the last jacobian obtained when generating the kinematics for the call to dSigHatDR.

Definition at line 642 of file StandardXComb.h.

Referenced by jacobian().

◆ theLastME2

double ThePEG::StandardXComb::theLastME2

private

The matrix element squared as calculated for the last phase space point.

This may optionally be used by a matrix element for caching.

Definition at line 649 of file StandardXComb.h.

Referenced by lastME2().

◆ theLastMECouplings

double ThePEG::StandardXComb::theLastMECouplings

private

The coupling factor.

Definition at line 674 of file StandardXComb.h.

Referenced by lastMECouplings().

◆ theLastMECrossSection

CrossSection ThePEG::StandardXComb::theLastMECrossSection

private

The partonic cross section as calculated for the last phase space point.

This may optionally be used by a matrix element for caching.

Definition at line 661 of file StandardXComb.h.

Referenced by lastMECrossSection().

◆ theLastMEPDFWeight

double ThePEG::StandardXComb::theLastMEPDFWeight

private

The PDF weight as calculated for the last phase space point, if the matrix element does supply PDF weights.

This may optionally be used by a matrix element for caching.

Definition at line 669 of file StandardXComb.h.

Referenced by lastMEPDFWeight().

◆ theLastPDFWeight

double ThePEG::StandardXComb::theLastPDFWeight

private

The PDF weight used in the last call to dSigDR.

Definition at line 631 of file StandardXComb.h.

Referenced by lastPDFWeight().

◆ theLastPreweight

double ThePEG::StandardXComb::theLastPreweight

private

The last preweight factor.

Definition at line 654 of file StandardXComb.h.

Referenced by lastPreweight().

◆ theLastRandomNumbers

DVector ThePEG::StandardXComb::theLastRandomNumbers

private

The random numbers used to generate the last phase space point, if the matrix element requested so.

Definition at line 626 of file StandardXComb.h.

Referenced by lastRandomNumbers().

◆ theME

tMEPtr ThePEG::StandardXComb::theME

private

The matrix element to be used.

Definition at line 551 of file StandardXComb.h.

Referenced by matrixElement().

◆ theMEInfo

DVector ThePEG::StandardXComb::theMEInfo

private

Information saved by the matrix element in the calculation of the cross section to be used later when selecting diagrams and colour flow.

Definition at line 619 of file StandardXComb.h.

Referenced by meInfo().

◆ theMEMomenta

vector<Lorentz5Momentum> ThePEG::StandardXComb::theMEMomenta

private

The momenta of the partons to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

Definition at line 595 of file StandardXComb.h.

Referenced by meMomenta().

◆ theMEPartonData

cPDVector ThePEG::StandardXComb::theMEPartonData

private

The parton types to be used by the matrix element object, in the order specified by the TreeDiagram objects given by the matrix element.

Definition at line 602 of file StandardXComb.h.

Referenced by mePartonData().

◆ theNDim

int ThePEG::StandardXComb::theNDim

private

The number of dimensions of the phase space used to generate this process.

Definition at line 573 of file StandardXComb.h.

Referenced by nDim().

◆ theNeedsReshuffling

bool ThePEG::StandardXComb::theNeedsReshuffling

private

True if a reshuffling is required when constructing the hard subprocess.

Definition at line 714 of file StandardXComb.h.

Referenced by needsReshuffling().

◆ theProjector

tStdXCombPtr ThePEG::StandardXComb::theProjector

private

A pointer to a projector xcomb which will generate a subprocess different from the one just integrated.

Definition at line 693 of file StandardXComb.h.

Referenced by lastProjector().

◆ theProjectors

Selector<tStdXCombPtr> ThePEG::StandardXComb::theProjectors

private

A selector object of xcombs to choose subprocesses different than the one currently integrated.

Definition at line 687 of file StandardXComb.h.

Referenced by projectors().

◆ theStats

XSecStat ThePEG::StandardXComb::theStats

private

Statistics gathering for this XComb.

Definition at line 556 of file StandardXComb.h.

Referenced by accept(), reject(), reset(), reweight(), select(), and stats().

◆ theSubProcessHandler

tSubHdlPtr ThePEG::StandardXComb::theSubProcessHandler

private

The corresponding sub-process handler.

Definition at line 546 of file StandardXComb.h.

Referenced by subProcessHandler().

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

StandardXComb.h

Public Types

Public Member Functions

Friends

Functions used by the persistent I/O system.

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ DiagramIndex

◆ DiagramVector

Member Function Documentation

◆ accept()

◆ clean()

◆ construct()

◆ cutWeight()

◆ diagrams()

◆ didGenerateKinematics()

◆ dSigDR() [1/2]

◆ dSigDR() [2/2]

◆ externalDiagram()

◆ head() [1/2]

◆ head() [2/2]

◆ jacobian() [1/2]

◆ jacobian() [2/2]

◆ kinematicsGenerated()

◆ lastCrossSection() [1/2]

◆ lastCrossSection() [2/2]

◆ lastDiagram()

◆ lastDiagramIndex() [1/2]

◆ lastDiagramIndex() [2/2]

◆ lastME2() [1/2]

◆ lastME2() [2/2]

◆ lastMECouplings() [1/2]

◆ lastMECouplings() [2/2]

◆ lastMECrossSection() [1/2]

◆ lastMECrossSection() [2/2]

◆ lastMEPDFWeight() [1/2]

◆ lastMEPDFWeight() [2/2]

◆ lastPDFWeight() [1/2]

◆ lastPDFWeight() [2/2]

◆ lastPreweight() [1/2]

◆ lastPreweight() [2/2]

◆ lastProjector() [1/2]

◆ lastProjector() [2/2]

◆ lastRandomNumbers() [1/2]

◆ lastRandomNumbers() [2/2]

◆ matrixElement()

◆ meInfo() [1/2]

◆ meInfo() [2/2]

◆ meMomenta() [1/2]

◆ meMomenta() [2/2]

◆ mePartonData() [1/2]

◆ mePartonData() [2/2]

◆ mirror()

◆ nDim()

◆ needsReshuffling()

◆ newSubProcess()

◆ partonDimensions()

◆ persistentInput()

◆ persistentOutput()

◆ projectors() [1/2]

◆ projectors() [2/2]

◆ reject()

◆ reset()

◆ reweight()

◆ select()

◆ setIncomingPartons()

◆ stats()

◆ subProcessHandler()

Friends And Related Function Documentation

◆ MEBase

Member Data Documentation

◆ checkedCuts

◆ initStandardXComb

◆ isMirror

◆ partonDims

◆ passedCuts

◆ theCutWeight

◆ theDiagrams

◆ theExternalDiagram

◆ theHead