The XComb class stores all information about the generation of a hard sub-proces for a given pair of incoming particles, a pair of extracted partons, total parton-parton energy squared and a PartonExtractor object. More...

#include <XComb.h>

Inheritance diagram for ThePEG::XComb:

[legend]

Public Member Functions
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.

Standard constructors and destructors.
	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.

Access the assigned objects used in the generation.
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.

Access information about incoming particles and partons.
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. More...

Functions used by the persistent I/O system.
void	persistentOutput (PersistentOStream &os) const
	Function used to write out object persistently. More...

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

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. More...

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

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

Static Public Member Functions
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. More...

Private Member Functions
XComb &	operator= (const XComb &)=delete
	Private and non-existent assignment operator.

Private Attributes
tEHPtr	theEventHandler
	The corresponding collision handler.

tPExtrPtr	thePartonExtractor
	A pointer to the parton extractor.

tCascHdlPtr	theCKKW
	A pointer to a CascadeHandler to be used for CKKW-reweighting.

tCutsPtr	theCuts
	A pointer to the kinematical cuts used.

cPDPair	theParticles
	The incoming particle types.

cPDPair	thePartons
	The incoming parton types.

PartonBinInstanceMap	thePartonBinInstanceMap
	The parton bin instance map (used by the parton extractor)

PBPair	thePartonBins
	Additional information about the incoming partons.

PBPair	theParticleBins
	Additional information about the origins of the incoming partons.

PBIPair	thePartonBinInstances
	Additional information about the incoming partons.

PPair	theLastParticles
	The pair of incoming particle instances.

PPair	theLastPartons
	The pair of incoming parton instances.

Energy2	theLastS
	The last generated total energy squared of the incoming particles.

Energy2	theLastSHat
	The last generated total energy squared of the incoming prtons.

double	theLastY
	The last rapidity of the sub process, log(x1/x2)/2.

DPair	theLastP1P2
	Log of one over the momentum fraction of the incoming particles.

DPair	theLastL1L2
	Log of one over the incoming partons momentum fraction wrt. More...

DPair	theLastX1X2
	The incoming partons momentum fraction wrt. More...

DPair	theLastE1E2
	1-lastX1() and 1-lastX2() to highest possible precision for x $\rightarrow$ 1.

Energy2	theLastScale
	The last chosen scale of the hard scattering.

Energy2	theLastCentralScale
	The last chosen central scale of the hard scattering.

Energy2	theLastShowerScale
	The last chosen shower scale.

double	theLastAlphaS
	The $\alpha_S$ used in the hard scattering.

double	theLastAlphaEM
	The $\alpha_{EM}$ used in the hard scattering.

Energy	theMaxEnergy
	The maximum cm energy for this process.

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.

SubProPtr	theSub
	The SubProcess object corresponding to the last generated sub-process.

map< int, AnyReference >	theMeta
	The meta information.

Static Private Attributes
static ClassDescription< XComb >	initXComb
	Describe a concrete class with persistent data.

Manipulate and acces information about the last selected
phase space point.
typedef map< cPPtr, PBIPtr >	PartonBinInstanceMap
	A map of PartonBinInstance objects indexed by the extracted parton. More...

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

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. More...

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

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

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

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

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

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

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

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

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. More...

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. More...

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. More...

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

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

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

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

	ReferenceCounted (const ReferenceCounted &)
	Copy-constructor.

ReferenceCounted &	operator= (const ReferenceCounted &)
	Assignment.

Detailed Description

The XComb class stores all information about the generation of a hard sub-proces for a given pair of incoming particles, a pair of extracted partons, total parton-parton energy squared and a PartonExtractor object.

When an event is generated, the objects used in the generation can be assigned an XComb object for easy acces to the corresponding information. To facilitate this, the corresponding classes inherits from the LastXCombInfo class which provides the relefant access functions.

See also: PartonExtractor; Cuts; LastXCombInfo

Definition at line 43 of file XComb.h.

Member Typedef Documentation

◆ PartonBinInstanceMap

typedef map<cPPtr,PBIPtr> ThePEG::XComb::PartonBinInstanceMap

A map of PartonBinInstance objects indexed by the extracted parton.

Definition at line 176 of file XComb.h.

Member Function Documentation

◆ empty()

bool ThePEG::XComb::empty ( ) const

inline

Returns true if this XComb does not correspond to a proper subprocess generation.

I.e. if we are only generating a partial event and the incoming particles and partons are not used explicitly.

Definition at line 126 of file XComb.h.

References clean(), prepare(), setPartonBinInstances(), and theEventHandler.

◆ lastAlphaEM()

double ThePEG::XComb::lastAlphaEM ( ) const

inline

Get the $\alpha_{EM}$ used in the hard scattering.

Is negative if no value has been set.

Definition at line 368 of file XComb.h.

References theLastAlphaEM.

◆ lastAlphaS()

double ThePEG::XComb::lastAlphaS ( ) const

inline

Get the $\alpha_S$ used in the hard scattering.

Is negative if no value has been set.

Definition at line 357 of file XComb.h.

References theLastAlphaS.

◆ lastE1E2()

void ThePEG::XComb::lastE1E2 ( pair< double, double > )

Set one minus the incoming parton momentum fractions w.r.t.

the incoming particles.

Referenced by lastE2().

◆ lastL1()

double ThePEG::XComb::lastL1 ( ) const

inline

Log of one over the first incoming parton momentum fraction w.r.t.

the first incoming particle.

Definition at line 263 of file XComb.h.

References theLastL1L2.

◆ lastL1L2()

void ThePEG::XComb::lastL1L2 ( pair< double, double > )

Set log of one over the incoming parton momentum fractions w.r.t.

the incoming particles.

Referenced by lastL2().

◆ lastL2()

double ThePEG::XComb::lastL2 ( ) const

inline

Log of one over the second incoming parton momentum fraction w.r.t.

the second incoming particle.

Definition at line 269 of file XComb.h.

References lastL1L2(), and theLastL1L2.

◆ lastP1()

double ThePEG::XComb::lastP1 ( ) const

inline

Log of one over the momentum fraction of the first incoming particle w.r.t.

the maximum allowed energy.

Definition at line 245 of file XComb.h.

References theLastP1P2.

◆ lastP1P2()

void ThePEG::XComb::lastP1P2 ( pair< double, double > pp )

inline

Set log of one over the momentum fraction of the incoming particles w.r.t.

the maximum allowed energy.

Definition at line 257 of file XComb.h.

References theLastP1P2.

◆ lastP2()

double ThePEG::XComb::lastP2 ( ) const

inline

Log of one over the momentum fraction of the second incoming particle w.r.t.

the maximum allowed energy.

Definition at line 251 of file XComb.h.

References theLastP1P2.

◆ lastX1()

double ThePEG::XComb::lastX1 ( ) const

inline

The first incoming parton momentum fraction w.r.t.

the first incoming particle.

Definition at line 281 of file XComb.h.

References theLastX1X2.

◆ lastX1X2()

void ThePEG::XComb::lastX1X2 ( pair< double, double > )

Set the incoming parton momentum fractions w.r.t.

the incoming particles.

Referenced by lastX2().

◆ lastX2()

double ThePEG::XComb::lastX2 ( ) const

inline

The second incoming parton momentum fraction w.r.t.

the second incoming particle.

Definition at line 287 of file XComb.h.

References lastX1X2(), and theLastX1X2.

◆ persistentInput()

void ThePEG::XComb::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.

Referenced by resetPartonBinInstances().

◆ persistentOutput()

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

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

Referenced by resetPartonBinInstances().

Member Data Documentation

◆ theLastL1L2

DPair ThePEG::XComb::theLastL1L2

private

Log of one over the incoming partons momentum fraction wrt.

the incoming particles.

Definition at line 537 of file XComb.h.

Referenced by lastL1(), and lastL2().

◆ theLastX1X2

DPair ThePEG::XComb::theLastX1X2

private

The incoming partons momentum fraction wrt.

the incoming particles.

Definition at line 543 of file XComb.h.

Referenced by lastX1(), and lastX2().

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

XComb.h

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Manipulate and acces information about the last selected

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ PartonBinInstanceMap

Member Function Documentation

◆ empty()

◆ lastAlphaEM()

◆ lastAlphaS()

◆ lastE1E2()

◆ lastL1()

◆ lastL1L2()

◆ lastL2()

◆ lastP1()

◆ lastP1P2()

◆ lastP2()

◆ lastX1()

◆ lastX1X2()

◆ lastX2()

◆ persistentInput()

◆ persistentOutput()

Member Data Documentation

◆ theLastL1L2

◆ theLastX1X2