Herwig::DipoleSplittingKernel Class Reference

DipoleSplittingKernel is the base class for all kernels used within the dipole shower. More...

#include <DipoleSplittingKernel.h>

Inheritance diagram for Herwig::DipoleSplittingKernel:

Public Member Functions
	DipoleSplittingKernel ()
	The default constructor.
Ptr< AlphaSBase >::tptr	alphaS () const
	Return the alpha_s to be used.
void	alphaS (Ptr< AlphaSBase >::tptr ap)
	Set the alpha_s to be used.
Ptr< DipoleSplittingKinematics >::tptr	splittingKinematics () const
	Return the splitting kinematics object.
Ptr< DipoleMCCheck >::ptr	mcCheck () const
	Return the mc check object.
void	splittingKinematics (Ptr< DipoleSplittingKinematics >::tptr sp)
	Set the splitting kinematics object.
Ptr< PDFRatio >::tptr	pdfRatio () const
	Return the PDFRatio object.
void	pdfRatio (Ptr< PDFRatio >::tptr sp)
	Set the PDFRatio object.
virtual int	nDimAdditional () const
	Return the number of additional parameter random variables needed to evaluate this kernel except the momentum fractions of incoming partons.
void	renormalizationScaleFreeze (Energy s)
	Set the freezing value for the renormalization scale.
void	factorizationScaleFreeze (Energy s)
	Set the freezing value for the factorization scale.
Energy	renormalizationScaleFreeze () const
	Get the freezing value for the renormalization scale.
Energy	factorizationScaleFreeze () const
	Get the freezing value for the factorization scale.
virtual bool	canHandle (const DipoleIndex &) const =0
	Return true, if this splitting kernel applies to the given dipole index.
virtual bool	canHandleEquivalent (const DipoleIndex &a, const DipoleSplittingKernel &sk, const DipoleIndex &b) const =0
	Return true, if this splitting kernel is the same for the given index a, as the given splitting kernel for index b.
virtual tcPDPtr	emitter (const DipoleIndex &) const =0
	Return the emitter data after splitting, given a dipole index.
virtual tcPDPtr	emission (const DipoleIndex &) const =0
	Return the emission data after splitting, given a dipole index.
virtual tcPDPtr	spectator (const DipoleIndex &) const =0
	Return the spectator data after splitting, given a dipole index.
PDPtr	flavour () const
	Return the flavour produced, if this cannot be determined from the dipole.
bool	strictLargeN () const
	Return true, if this splitting kernel is supposed to work in a strict large-N limit, i.e.
virtual void	startPresampling (const DipoleIndex &)
	Inform this splitting kernel, that it is being presampled until a call to stopPresampling.
virtual void	stopPresampling (const DipoleIndex &)
	Inform this splitting kernel, that it is not being presampled until a call to startPresampling.
unsigned long	presamplingPoints () const
	Return the number of points to presample this splitting generator.
unsigned long	maxtry () const
	Return the maximum number of trials to generate a splitting.
unsigned long	freezeGrid () const
	Return the number of accepted points after which the grid should be frozen.
void	freezeGrid (unsigned long n)
	Set the number of accepted points after which the grid should be frozen.
void	detuning (double d)
	Set a detuning factor to be applied to the sampling overestimate kernel.
double	detuning () const
	Return the detuning factor applied to the sampling overestimate kernel.
virtual double	evaluate (const DipoleSplittingInfo &) const =0
	Evaluate this splitting kernel for the given dipole splitting.
virtual vector< pair< int, Complex > >	generatePhi (const DipoleSplittingInfo &dInfo, const RhoDMatrix &rho) const =0
	Evaluate rho_ii' V_ijk V*_i'jk / equivalent for initial-state splitting, required for generating spin-correlated azimuthal angles.
virtual DecayMEPtr	matrixElement (const DipoleSplittingInfo &dInfo) const =0
	Return the completely spin-unaveraged (i.e.
void	clearAlphaPDFCache () const
	Clear the alphaPDF cache.
virtual void	accept (const DipoleSplittingInfo &, double, double, map< string, double > &) const
	Update the variations vector at the given splitting using the indicated kernel and overestimate values.
virtual void	veto (const DipoleSplittingInfo &, double, double, map< string, double > &) const
	Update the variations vector at the given splitting using the indicated kernel and overestimate values.
virtual bool	haveOverestimate (const DipoleSplittingInfo &) const
	Return true, if this kernel is capable of delivering an overestimate to the kernel, and of inverting the integral over the overestimate w.r.t.
virtual double	overestimate (const DipoleSplittingInfo &) const
	Return the overestimate to this splitting kernel for the given dipole splitting.
virtual double	invertOverestimateIntegral (const DipoleSplittingInfo &, double) const
	Invert the integral over the overestimate w.r.t.
bool	useThisKernel () const
double	factorizationScaleFactor () const
	Get the factorization scale factor.
void	factorizationScaleFactor (double f)
	Set the factorization scale factor.
double	renormalizationScaleFactor () const
	Get the renormalization scale factor.
void	renormalizationScaleFactor (double f)
	Set the renormalization scale factor.
unsigned int	cmwScheme () const
	Return the CMW sheme used by the kernel.
Public Member Functions inherited from ThePEG::HandlerBaseT< UseRandom >
double	rnd () const
double	rnd (double xu) const
double	rnd (double xl, double xu) const
bool	rndbool () const
bool	rndbool (double p) const
bool	rndbool (double p1, double p2) const
int	rndsign (double p1, double p2, double p3) const
int	rnd2 (double p0, double p1) const
int	rnd3 (double p0, double p1, double p2) const
int	rnd4 (double p0, double p1, double p2, double p3) const
long	irnd (long xu=2) const
long	irnd (long xl, long xu) const
const StandardModelBase &	SM () const
tSMPtr	standardModel () const
Public Member Functions inherited from ThePEG::Interfaced
virtual bool	defaultInit ()
PPtr	getParticle (PID) const
PDPtr	getParticleData (PID) const
bool	used () const
void	useMe () const
tEGPtr	generator () const
void	persistentOutput (PersistentOStream &os) const
void	persistentInput (PersistentIStream &is, int version)
PPtr	getParticle (PID) const
PDPtr	getParticleData (PID) const
bool	used () const
void	useMe () const
tEGPtr	generator () const
Public Member Functions inherited from ThePEG::InterfacedBase
string	fullName () const
string	name () const
string	path () const
string	comment () const
void	setup (istream &is)
void	update ()
void	init ()
virtual bool	preInitialize () const
void	initrun ()
void	finish ()
void	touch ()
void	reset ()
void	clear ()
InitState	state () const
bool	locked () const
bool	touched () const
virtual IBPtr	fullclone () const
void	persistentOutput (PersistentOStream &os) const
void	persistentInput (PersistentIStream &is, int version)
virtual void	debugme () const
void	update ()
void	init ()
virtual bool	preInitialize () const
void	initrun ()
void	finish ()
void	touch ()
void	reset ()
void	clear ()
InitState	state () const
bool	locked () const
bool	touched () const
virtual IBPtr	fullclone () const
Public Member Functions inherited from ThePEG::Base
void	debug () const
virtual void	debugme () const
Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType	referenceCount () const
Public Member Functions inherited from ThePEG::Named
	Named (const string &newName=string())
	Named (const Named &)=default
const string &	name () const
bool	operator== (const Named &other) const
bool	operator< (const Named &other) const

Protected Member Functions
double	alphaPDF (const DipoleSplittingInfo &, Energy optScale=ZERO, double rScaleFactor=1.0, double fScaleFactor=1.0) const
	Return the common factor of (alphas/2pi)*(pdf ratio)
bool	virtualitySplittingScale () const
	Return true, if the virtuality of the splitting should be used as the argument of alphas rather than the pt.
Protected Member Functions inherited from ThePEG::Interfaced
void	reporeg (IBPtr object, string name) const
bool	setDefaultReference (PtrT &ptr, string classname, string objectname)
	Interfaced (const string &newName)
	Interfaced (const Interfaced &i)
void	setGenerator (tEGPtr generator)
Protected Member Functions inherited from ThePEG::InterfacedBase
virtual void	readSetup (istream &is)
virtual void	doupdate ()
virtual void	doinit ()
virtual void	doinitrun ()
virtual void	dofinish ()
virtual IVector	getReferences ()
virtual void	rebind (const TranslationMap &)
virtual IBPtr	clone () const=0
	InterfacedBase (string newName)
	InterfacedBase (const InterfacedBase &i)
virtual void	readSetup (istream &is)
virtual void	doupdate ()
virtual void	doinit ()
virtual void	doinitrun ()
virtual void	dofinish ()
virtual IVector	getReferences ()
virtual void	rebind (const TranslationMap &)
Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
	ReferenceCounted (const ReferenceCounted &)
ReferenceCounted &	operator= (const ReferenceCounted &)
Protected Member Functions inherited from ThePEG::Named
const Named &	operator= (const Named &other)
const string &	name (const string &newName)

Functions used by the persistent I/O system.
Ptr< AlphaSBase >::ptr	theAlphaS
	The alpha_s to be used.
Energy	theScreeningScale
	An optional 'colour screening' scale for alternative intrinsic pt generation.
Ptr< DipoleSplittingKinematics >::ptr	theSplittingKinematics
	The splitting kinematics to be used.
Ptr< PDFRatio >::ptr	thePDFRatio
	An optional PDF ratio object to be used when evaluating this kernel.
unsigned long	thePresamplingPoints
	The number of points to presample this splitting generator.
unsigned long	theMaxtry
	The maximum number of trials to generate a splitting.
unsigned long	theFreezeGrid
	Return the number of accepted points after which the grid should be frozen.
double	theDetuning
	The detuning factor applied to the sampling overestimate kernel.
PDPtr	theFlavour
	The flavour produced, if this cannot be determined from the dipole.
Ptr< DipoleMCCheck >::ptr	theMCCheck
	Pointer to a check histogram object.
bool	theStrictLargeN
	True, if this splitting kernel is supposed to work in a strict large-N limit, i.e.
double	theFactorizationScaleFactor
	The factorization scale factor.
double	theRenormalizationScaleFactor
	The renormalization scale factor.
Energy	theRenormalizationScaleFreeze
	A freezing value for the renormalization scale.
Energy	theFactorizationScaleFreeze
	A freezing value for the factorization scale.
bool	theVirtualitySplittingScale
	True, if the virtuality of the splitting should be used as the argument of alphas rather than the pt.
unsigned int	theCMWScheme =0
	Implementing CMW in the kernels.
map< double, double >	theAlphaSCache
	Cache for alphas evaluations.
map< double, double >	thePDFCache
	Cache for PDF evaluations.
bool	presampling
	True, if we are presampling.
bool	theUseThisKernel = true
	True, if the kernel should be used.
static double	theMaxPDFRatio
	The maximum value for any pdf ratio.
static AbstractClassDescription< DipoleSplittingKernel >	initDipoleSplittingKernel
	The static object used to initialize the description of this class.
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 ()
	The standard Init function used to initialize the interfaces.
DipoleSplittingKernel &	operator= (const DipoleSplittingKernel &)=delete
	The assignment operator is private and must never be called.

Additional Inherited Members
Public Types inherited from ThePEG::InterfacedBase
enum	InitState
Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int	CounterType
Static Public Member Functions inherited from ThePEG::HandlerBase
static void	Init ()
Static Public Member Functions inherited from ThePEG::Interfaced
static void	Init ()
Static Public Member Functions inherited from ThePEG::InterfacedBase
static void	Init ()
Static Public Member Functions inherited from ThePEG::Base
static void	Init ()
Public Attributes inherited from ThePEG::InterfacedBase
	initializing
	uninitialized
	initialized
	runready
Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long	uniqueId
Static Protected Member Functions inherited from ThePEG::Interfaced
static void	registerRepository (IBPtr)
static void	registerRepository (IBPtr, string newName)

Detailed Description

DipoleSplittingKernel is the base class for all kernels used within the dipole shower.

Author

Simon Platzer

See also

The interfaces defined for DipoleSplittingKernel.

Definition at line 41 of file DipoleSplittingKernel.h.

Member Function Documentation

alphaS() [1/2]

Ptr< AlphaSBase >::tptr Herwig::DipoleSplittingKernel::alphaS ( ) const

inline

Return the alpha_s to be used.

Definition at line 55 of file DipoleSplittingKernel.h.

References theAlphaS.

alphaS() [2/2]

void Herwig::DipoleSplittingKernel::alphaS ( Ptr< AlphaSBase >::tptr  ap )

inline

Set the alpha_s to be used.

Definition at line 60 of file DipoleSplittingKernel.h.

References theAlphaS.

canHandle()

virtual bool Herwig::DipoleSplittingKernel::canHandle ( const DipoleIndex &  ) const

pure virtual

Return true, if this splitting kernel applies to the given dipole index.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMDecayqx2qgxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, and Herwig::IIqx2qgxDipoleKernel.

canHandleEquivalent()

virtual bool Herwig::DipoleSplittingKernel::canHandleEquivalent ( const DipoleIndex &  a, const DipoleSplittingKernel &  sk, const DipoleIndex &  b  ) const

pure virtual

Return true, if this splitting kernel is the same for the given index a, as the given splitting kernel for index b.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMDecayqx2qgxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, and Herwig::IIqx2qgxDipoleKernel.

clearAlphaPDFCache()

void Herwig::DipoleSplittingKernel::clearAlphaPDFCache ( ) const

inline

Clear the alphaPDF cache.

Definition at line 240 of file DipoleSplittingKernel.h.

References theAlphaSCache, and thePDFCache.

cmwScheme()

unsigned int Herwig::DipoleSplittingKernel::cmwScheme ( ) const

inline

Return the CMW sheme used by the kernel.

Definition at line 314 of file DipoleSplittingKernel.h.

References theCMWScheme.

detuning() [1/2]

double Herwig::DipoleSplittingKernel::detuning ( ) const

inline

Return the detuning factor applied to the sampling overestimate kernel.

Definition at line 218 of file DipoleSplittingKernel.h.

References theDetuning.

detuning() [2/2]

void Herwig::DipoleSplittingKernel::detuning ( double  d )

inline

Set a detuning factor to be applied to the sampling overestimate kernel.

Definition at line 213 of file DipoleSplittingKernel.h.

References theDetuning.

emission()

virtual tcPDPtr Herwig::DipoleSplittingKernel::emission ( const DipoleIndex &  ) const

pure virtual

Return the emission data after splitting, given a dipole index.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMDecayqx2qgxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, and Herwig::IIqx2qgxDipoleKernel.

emitter()

virtual tcPDPtr Herwig::DipoleSplittingKernel::emitter ( const DipoleIndex &  ) const

pure virtual

Return the emitter data after splitting, given a dipole index.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, Herwig::IIqx2qgxDipoleKernel, and Herwig::FIMDecayqx2qgxDipoleKernel.

evaluate()

virtual double Herwig::DipoleSplittingKernel::evaluate ( const DipoleSplittingInfo &  ) const

pure virtual

Evaluate this splitting kernel for the given dipole splitting.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, Herwig::IIqx2qgxDipoleKernel, and Herwig::FIMDecayqx2qgxDipoleKernel.

factorizationScaleFactor() [1/2]

double Herwig::DipoleSplittingKernel::factorizationScaleFactor ( ) const

inline

Get the factorization scale factor.

Definition at line 294 of file DipoleSplittingKernel.h.

References theFactorizationScaleFactor.

factorizationScaleFactor() [2/2]

void Herwig::DipoleSplittingKernel::factorizationScaleFactor ( double  f )

inline

Set the factorization scale factor.

Definition at line 299 of file DipoleSplittingKernel.h.

References theFactorizationScaleFactor.

factorizationScaleFreeze() [1/2]

Energy Herwig::DipoleSplittingKernel::factorizationScaleFreeze ( ) const

inline

Get the freezing value for the factorization scale.

Definition at line 119 of file DipoleSplittingKernel.h.

References theFactorizationScaleFreeze.

factorizationScaleFreeze() [2/2]

void Herwig::DipoleSplittingKernel::factorizationScaleFreeze ( Energy  s )

inline

Set the freezing value for the factorization scale.

Definition at line 109 of file DipoleSplittingKernel.h.

References theFactorizationScaleFreeze.

flavour()

PDPtr Herwig::DipoleSplittingKernel::flavour ( ) const

inline

Return the flavour produced, if this cannot be determined from the dipole.

Definition at line 160 of file DipoleSplittingKernel.h.

References theFlavour.

freezeGrid() [1/2]

unsigned long Herwig::DipoleSplittingKernel::freezeGrid ( ) const

inline

Return the number of accepted points after which the grid should be frozen.

Definition at line 202 of file DipoleSplittingKernel.h.

References theFreezeGrid.

freezeGrid() [2/2]

void Herwig::DipoleSplittingKernel::freezeGrid ( unsigned long  n )

inline

Set the number of accepted points after which the grid should be frozen.

Definition at line 208 of file DipoleSplittingKernel.h.

References theFreezeGrid.

generatePhi()

virtual vector< pair< int, Complex > > Herwig::DipoleSplittingKernel::generatePhi ( const DipoleSplittingInfo &  dInfo, const RhoDMatrix &  rho  ) const

pure virtual

Evaluate rho_ii' V_ijk V*_i'jk / equivalent for initial-state splitting, required for generating spin-correlated azimuthal angles.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMDecayqx2qgxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, and Herwig::IIqx2qgxDipoleKernel.

haveOverestimate()

virtual bool Herwig::DipoleSplittingKernel::haveOverestimate ( const DipoleSplittingInfo &  ) const

inlinevirtual

Return true, if this kernel is capable of delivering an overestimate to the kernel, and of inverting the integral over the overestimate w.r.t.

the phasepsace provided by the given DipoleSplittingInfo object.

Definition at line 264 of file DipoleSplittingKernel.h.

Init()

static void Herwig::DipoleSplittingKernel::Init ( )

static

The standard Init function used to initialize the interfaces.

Called exactly once for each class by the class description system before the main function starts or when this class is dynamically loaded.

invertOverestimateIntegral()

virtual double Herwig::DipoleSplittingKernel::invertOverestimateIntegral ( const DipoleSplittingInfo &  , double    ) const

inlinevirtual

Invert the integral over the overestimate w.r.t.

the phasepsace provided by the given DipoleSplittingInfo object to equal the given value.

Definition at line 278 of file DipoleSplittingKernel.h.

matrixElement()

virtual DecayMEPtr Herwig::DipoleSplittingKernel::matrixElement ( const DipoleSplittingInfo &  dInfo ) const

pure virtual

Return the completely spin-unaveraged (i.e.

spin-indexed) splitting kernel.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMDecayqx2qgxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, and Herwig::IIqx2qgxDipoleKernel.

maxtry()

unsigned long Herwig::DipoleSplittingKernel::maxtry ( ) const

inline

Return the maximum number of trials to generate a splitting.

Definition at line 196 of file DipoleSplittingKernel.h.

References theMaxtry.

mcCheck()

Ptr< DipoleMCCheck >::ptr Herwig::DipoleSplittingKernel::mcCheck ( ) const

inline

Return the mc check object.

Definition at line 72 of file DipoleSplittingKernel.h.

References theMCCheck.

nDimAdditional()

virtual int Herwig::DipoleSplittingKernel::nDimAdditional ( ) const

inlinevirtual

Return the number of additional parameter random variables needed to evaluate this kernel except the momentum fractions of incoming partons.

These will be accessible through the lastSplittingParameters() container of the splitting info object.

Definition at line 99 of file DipoleSplittingKernel.h.

operator=()

DipoleSplittingKernel & Herwig::DipoleSplittingKernel::operator= ( const DipoleSplittingKernel &  )

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

overestimate()

virtual double Herwig::DipoleSplittingKernel::overestimate ( const DipoleSplittingInfo &  ) const

inlinevirtual

Return the overestimate to this splitting kernel for the given dipole splitting.

Definition at line 270 of file DipoleSplittingKernel.h.

pdfRatio() [1/2]

Ptr< PDFRatio >::tptr Herwig::DipoleSplittingKernel::pdfRatio ( ) const

inline

Return the PDFRatio object.

Definition at line 84 of file DipoleSplittingKernel.h.

References thePDFRatio.

pdfRatio() [2/2]

void Herwig::DipoleSplittingKernel::pdfRatio ( Ptr< PDFRatio >::tptr  sp )

inline

Set the PDFRatio object.

Definition at line 89 of file DipoleSplittingKernel.h.

References thePDFRatio.

persistentInput()

void Herwig::DipoleSplittingKernel::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 Herwig::DipoleSplittingKernel::persistentOutput

(

PersistentOStream &

os

)

const

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

presamplingPoints()

unsigned long Herwig::DipoleSplittingKernel::presamplingPoints ( ) const

inline

Return the number of points to presample this splitting generator.

Definition at line 190 of file DipoleSplittingKernel.h.

References thePresamplingPoints.

renormalizationScaleFactor() [1/2]

double Herwig::DipoleSplittingKernel::renormalizationScaleFactor ( ) const

inline

Get the renormalization scale factor.

Definition at line 304 of file DipoleSplittingKernel.h.

References theRenormalizationScaleFactor.

renormalizationScaleFactor() [2/2]

void Herwig::DipoleSplittingKernel::renormalizationScaleFactor ( double  f )

inline

Set the renormalization scale factor.

Definition at line 309 of file DipoleSplittingKernel.h.

References theRenormalizationScaleFactor.

renormalizationScaleFreeze() [1/2]

Energy Herwig::DipoleSplittingKernel::renormalizationScaleFreeze ( ) const

inline

Get the freezing value for the renormalization scale.

Definition at line 114 of file DipoleSplittingKernel.h.

References theRenormalizationScaleFreeze.

renormalizationScaleFreeze() [2/2]

void Herwig::DipoleSplittingKernel::renormalizationScaleFreeze ( Energy  s )

inline

Set the freezing value for the renormalization scale.

Definition at line 104 of file DipoleSplittingKernel.h.

References theRenormalizationScaleFreeze.

spectator()

virtual tcPDPtr Herwig::DipoleSplittingKernel::spectator ( const DipoleIndex &  ) const

pure virtual

Return the spectator data after splitting, given a dipole index.

Implemented in Herwig::FFgx2ggxDipoleKernel, Herwig::FFgx2qqxDipoleKernel, Herwig::FFMgx2ggxDipoleKernel, Herwig::FFMgx2qqxDipoleKernel, Herwig::FFMqx2qgxDipoleKernel, Herwig::FFqx2qgxDipoleKernel, Herwig::FIgx2ggxDipoleKernel, Herwig::FIgx2qqxDipoleKernel, Herwig::FIMDecaygx2ggxDipoleKernel, Herwig::FIMDecaygx2qqxDipoleKernel, Herwig::FIMgx2qqxDipoleKernel, Herwig::FIMqx2qgxDipoleKernel, Herwig::FIqx2qgxDipoleKernel, Herwig::IFgx2ggxDipoleKernel, Herwig::IFgx2qqxDipoleKernel, Herwig::IFMgx2ggxDipoleKernel, Herwig::IFMgx2qqxDipoleKernel, Herwig::IFMqx2gqxDipoleKernel, Herwig::IFMqx2qgxDipoleKernel, Herwig::IFqx2gqxDipoleKernel, Herwig::IFqx2qgxDipoleKernel, Herwig::IIgx2ggxDipoleKernel, Herwig::IIgx2qqxDipoleKernel, Herwig::IIqx2gqxDipoleKernel, Herwig::IIqx2qgxDipoleKernel, and Herwig::FIMDecayqx2qgxDipoleKernel.

splittingKinematics() [1/2]

Ptr< DipoleSplittingKinematics >::tptr Herwig::DipoleSplittingKernel::splittingKinematics ( ) const

inline

Return the splitting kinematics object.

Definition at line 65 of file DipoleSplittingKernel.h.

References theSplittingKinematics.

splittingKinematics() [2/2]

void Herwig::DipoleSplittingKernel::splittingKinematics ( Ptr< DipoleSplittingKinematics >::tptr  sp )

inline

Set the splitting kinematics object.

Definition at line 77 of file DipoleSplittingKernel.h.

References theSplittingKinematics.

startPresampling()

virtual void Herwig::DipoleSplittingKernel::startPresampling ( const DipoleIndex &  )

inlinevirtual

Inform this splitting kernel, that it is being presampled until a call to stopPresampling.

Definition at line 174 of file DipoleSplittingKernel.h.

References presampling.

stopPresampling()

virtual void Herwig::DipoleSplittingKernel::stopPresampling ( const DipoleIndex &  )

inlinevirtual

Inform this splitting kernel, that it is not being presampled until a call to startPresampling.

Definition at line 182 of file DipoleSplittingKernel.h.

References presampling.

strictLargeN()

bool Herwig::DipoleSplittingKernel::strictLargeN ( ) const

inline

Return true, if this splitting kernel is supposed to work in a strict large-N limit, i.e.

replacing C_F by C_A/2

Definition at line 166 of file DipoleSplittingKernel.h.

References theStrictLargeN.

useThisKernel()

bool Herwig::DipoleSplittingKernel::useThisKernel ( ) const

inline

Definition at line 285 of file DipoleSplittingKernel.h.

References theUseThisKernel.

virtualitySplittingScale()

bool Herwig::DipoleSplittingKernel::virtualitySplittingScale ( ) const

inlineprotected

Return true, if the virtuality of the splitting should be used as the argument of alphas rather than the pt.

Definition at line 330 of file DipoleSplittingKernel.h.

References theVirtualitySplittingScale.

Member Data Documentation

initDipoleSplittingKernel

AbstractClassDescription<DipoleSplittingKernel> Herwig::DipoleSplittingKernel::initDipoleSplittingKernel

staticprivate

The static object used to initialize the description of this class.

Indicates that this is an abstract class with persistent data.

Definition at line 491 of file DipoleSplittingKernel.h.

presampling

bool Herwig::DipoleSplittingKernel::presampling

private

True, if we are presampling.

Definition at line 477 of file DipoleSplittingKernel.h.

Referenced by startPresampling(), and stopPresampling().

theAlphaS

Ptr<AlphaSBase>::ptr Herwig::DipoleSplittingKernel::theAlphaS

private

The alpha_s to be used.

Definition at line 367 of file DipoleSplittingKernel.h.

Referenced by alphaS().

theAlphaSCache

map<double,double> Herwig::DipoleSplittingKernel::theAlphaSCache

mutableprivate

Cache for alphas evaluations.

Definition at line 467 of file DipoleSplittingKernel.h.

Referenced by clearAlphaPDFCache().

theCMWScheme

unsigned int Herwig::DipoleSplittingKernel::theCMWScheme =0

private

Implementing CMW in the kernels.

Definition at line 462 of file DipoleSplittingKernel.h.

Referenced by cmwScheme().

theDetuning

double Herwig::DipoleSplittingKernel::theDetuning

private

The detuning factor applied to the sampling overestimate kernel.

Definition at line 413 of file DipoleSplittingKernel.h.

Referenced by detuning().

theFactorizationScaleFactor

double Herwig::DipoleSplittingKernel::theFactorizationScaleFactor

private

The factorization scale factor.

Definition at line 435 of file DipoleSplittingKernel.h.

Referenced by factorizationScaleFactor().

theFactorizationScaleFreeze

Energy Herwig::DipoleSplittingKernel::theFactorizationScaleFreeze

private

A freezing value for the factorization scale.

Definition at line 450 of file DipoleSplittingKernel.h.

Referenced by factorizationScaleFreeze().

theFlavour

PDPtr Herwig::DipoleSplittingKernel::theFlavour

private

The flavour produced, if this cannot be determined from the dipole.

Definition at line 419 of file DipoleSplittingKernel.h.

Referenced by flavour().

theFreezeGrid

unsigned long Herwig::DipoleSplittingKernel::theFreezeGrid

private

Return the number of accepted points after which the grid should be frozen.

Definition at line 408 of file DipoleSplittingKernel.h.

Referenced by freezeGrid().

theMaxPDFRatio

double Herwig::DipoleSplittingKernel::theMaxPDFRatio

staticprivate

The maximum value for any pdf ratio.

TODO: JB:Should this be an interfaced value? Is there a reasobable case where it should be allowed to be bigger than 1000000.?

Definition at line 402 of file DipoleSplittingKernel.h.

theMaxtry

unsigned long Herwig::DipoleSplittingKernel::theMaxtry

private

The maximum number of trials to generate a splitting.

Definition at line 396 of file DipoleSplittingKernel.h.

Referenced by maxtry().

theMCCheck

Ptr<DipoleMCCheck>::ptr Herwig::DipoleSplittingKernel::theMCCheck

private

Pointer to a check histogram object.

Definition at line 424 of file DipoleSplittingKernel.h.

Referenced by mcCheck().

thePDFCache

map<double,double> Herwig::DipoleSplittingKernel::thePDFCache

mutableprivate

Cache for PDF evaluations.

Definition at line 472 of file DipoleSplittingKernel.h.

Referenced by clearAlphaPDFCache().

thePDFRatio

Ptr<PDFRatio>::ptr Herwig::DipoleSplittingKernel::thePDFRatio

private

An optional PDF ratio object to be used when evaluating this kernel.

Definition at line 384 of file DipoleSplittingKernel.h.

Referenced by pdfRatio().

thePresamplingPoints

unsigned long Herwig::DipoleSplittingKernel::thePresamplingPoints

private

The number of points to presample this splitting generator.

Definition at line 390 of file DipoleSplittingKernel.h.

Referenced by presamplingPoints().

theRenormalizationScaleFactor

double Herwig::DipoleSplittingKernel::theRenormalizationScaleFactor

private

The renormalization scale factor.

Definition at line 440 of file DipoleSplittingKernel.h.

Referenced by renormalizationScaleFactor().

theRenormalizationScaleFreeze

Energy Herwig::DipoleSplittingKernel::theRenormalizationScaleFreeze

private

A freezing value for the renormalization scale.

Definition at line 445 of file DipoleSplittingKernel.h.

Referenced by renormalizationScaleFreeze().

theScreeningScale

Energy Herwig::DipoleSplittingKernel::theScreeningScale

private

An optional 'colour screening' scale for alternative intrinsic pt generation.

Definition at line 373 of file DipoleSplittingKernel.h.

theSplittingKinematics

Ptr<DipoleSplittingKinematics>::ptr Herwig::DipoleSplittingKernel::theSplittingKinematics

private

The splitting kinematics to be used.

Definition at line 378 of file DipoleSplittingKernel.h.

Referenced by splittingKinematics().

theStrictLargeN

bool Herwig::DipoleSplittingKernel::theStrictLargeN

private

True, if this splitting kernel is supposed to work in a strict large-N limit, i.e.

replacing C_F by C_A/2

Definition at line 430 of file DipoleSplittingKernel.h.

Referenced by strictLargeN().

theUseThisKernel

bool Herwig::DipoleSplittingKernel::theUseThisKernel = true

private

True, if the kernel should be used.

Definition at line 482 of file DipoleSplittingKernel.h.

Referenced by useThisKernel().

theVirtualitySplittingScale

bool Herwig::DipoleSplittingKernel::theVirtualitySplittingScale

private

True, if the virtuality of the splitting should be used as the argument of alphas rather than the pt.

Definition at line 456 of file DipoleSplittingKernel.h.

Referenced by virtualitySplittingScale().

---

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

• DipoleSplittingKernel.h