FFgx2ggxDipoleKernel implements the g -> gg splitting off a final-final dipole. More...

#include <FFgx2ggxDipoleKernel.h>

Inheritance diagram for Herwig::FFgx2ggxDipoleKernel:

[legend]

Public Member Functions
	FFgx2ggxDipoleKernel ()
	The default constructor.

virtual bool	canHandle (const DipoleIndex &) const
	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
	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
	Return the emitter data after splitting, given a dipole index.

virtual tcPDPtr	emission (const DipoleIndex &) const
	Return the emission data after splitting, given a dipole index.

virtual tcPDPtr	spectator (const DipoleIndex &) const
	Return the spectator data after splitting, given a dipole index.

virtual double	evaluate (const DipoleSplittingInfo &) const
	Evaluate this splitting kernel for the given dipole splitting.

virtual vector< pair< int, Complex > >	generatePhi (const DipoleSplittingInfo &dInfo, const RhoDMatrix &rho) const
	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
	Return the completely spin-unaveraged (i.e.

Public Member Functions inherited from Herwig::DipoleSplittingKernel
	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.

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::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

Clone Methods.
static ClassDescription< FFgx2ggxDipoleKernel >	initFFgx2ggxDipoleKernel
	The static object used to initialize the description of this class.

int	theAsymmetryOption =1
	Asymmetry option for final state gluon splittings.

virtual IBPtr	clone () const
	Make a simple clone of this object.

virtual IBPtr	fullclone () const
	Make a clone of this object, possibly modifying the cloned object to make it sane.

FFgx2ggxDipoleKernel &	operator= (const FFgx2ggxDipoleKernel &)=delete
	The assignment operator is private and must never be called.

Functions used by the persistent I/O system.
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.

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 Herwig::DipoleSplittingKernel
static void	Init ()
	The standard Init function used to initialize the interfaces.

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

Protected Member Functions inherited from Herwig::DipoleSplittingKernel
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)

Static Protected Member Functions inherited from ThePEG::Interfaced
static void	registerRepository (IBPtr)

static void	registerRepository (IBPtr, string newName)

Detailed Description

FFgx2ggxDipoleKernel implements the g -> gg splitting off a final-final dipole.

Author: Simon Platzer

Definition at line 22 of file FFgx2ggxDipoleKernel.h.

Member Function Documentation

◆ canHandle()

virtual bool Herwig::FFgx2ggxDipoleKernel::canHandle ( const DipoleIndex & ) const

virtual

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

Implements Herwig::DipoleSplittingKernel.

◆ canHandleEquivalent()

virtual bool Herwig::FFgx2ggxDipoleKernel::canHandleEquivalent	(	const DipoleIndex &	a,
		const DipoleSplittingKernel &	sk,
		const DipoleIndex &	b
	)		const

virtual

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

Implements Herwig::DipoleSplittingKernel.

◆ clone()

virtual IBPtr Herwig::FFgx2ggxDipoleKernel::clone ( ) const

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ emission()

virtual tcPDPtr Herwig::FFgx2ggxDipoleKernel::emission ( const DipoleIndex & ) const

virtual

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

Implements Herwig::DipoleSplittingKernel.

◆ emitter()

virtual tcPDPtr Herwig::FFgx2ggxDipoleKernel::emitter ( const DipoleIndex & ) const

virtual

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

Implements Herwig::DipoleSplittingKernel.

◆ evaluate()

virtual double Herwig::FFgx2ggxDipoleKernel::evaluate ( const DipoleSplittingInfo & ) const

virtual

Evaluate this splitting kernel for the given dipole splitting.

Implements Herwig::DipoleSplittingKernel.

◆ fullclone()

virtual IBPtr Herwig::FFgx2ggxDipoleKernel::fullclone ( ) const

protectedvirtual

Make a clone of this object, possibly modifying the cloned object to make it sane.

Returns: a pointer to the new object.

Reimplemented from ThePEG::InterfacedBase.

◆ generatePhi()

virtual vector< pair< int, Complex > > Herwig::FFgx2ggxDipoleKernel::generatePhi	(	const DipoleSplittingInfo &	dInfo,
		const RhoDMatrix &	rho
	)		const

virtual

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

Implements Herwig::DipoleSplittingKernel.

◆ Init()

static void Herwig::FFgx2ggxDipoleKernel::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.

◆ matrixElement()

virtual DecayMEPtr Herwig::FFgx2ggxDipoleKernel::matrixElement ( const DipoleSplittingInfo & dInfo ) const

virtual

Return the completely spin-unaveraged (i.e.

spin-indexed) splitting kernel.

Implements Herwig::DipoleSplittingKernel.

◆ operator=()

FFgx2ggxDipoleKernel & Herwig::FFgx2ggxDipoleKernel::operator= ( const FFgx2ggxDipoleKernel & )

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

void Herwig::FFgx2ggxDipoleKernel::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::FFgx2ggxDipoleKernel::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ spectator()

virtual tcPDPtr Herwig::FFgx2ggxDipoleKernel::spectator ( const DipoleIndex & ) const

virtual

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

Implements Herwig::DipoleSplittingKernel.

Member Data Documentation

◆ initFFgx2ggxDipoleKernel

ClassDescription<FFgx2ggxDipoleKernel> Herwig::FFgx2ggxDipoleKernel::initFFgx2ggxDipoleKernel

staticprivate

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

Indicates that this is a concrete class with persistent data.

Definition at line 137 of file FFgx2ggxDipoleKernel.h.

◆ theAsymmetryOption

int Herwig::FFgx2ggxDipoleKernel::theAsymmetryOption =1

private

Asymmetry option for final state gluon splittings.

Definition at line 149 of file FFgx2ggxDipoleKernel.h.

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

FFgx2ggxDipoleKernel.h

Public Member Functions

Clone Methods.

Functions used by the persistent I/O system.

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ canHandle()

◆ canHandleEquivalent()

◆ clone()

◆ emission()

◆ emitter()

◆ evaluate()

◆ fullclone()

◆ generatePhi()

◆ Init()

◆ matrixElement()

◆ operator=()

◆ persistentInput()

◆ persistentOutput()

◆ spectator()

Member Data Documentation

◆ initFFgx2ggxDipoleKernel

◆ theAsymmetryOption