The HalfHalfZeroEWSplitFn class implements the splitting function for \(\frac12\to q\frac12 h\) where the spin-0 higgs particle is a massive scalar boson. More...

#include <HalfHalfZeroEWSplitFn.h>

Inheritance diagram for Herwig::HalfHalfZeroEWSplitFn:

[legend]

Public Member Functions
virtual bool	accept (const IdList &ids) const
	Concrete implementation of the method to determine whether this splitting function can be used for a given set of particles.

virtual double	P (const double z, const Energy2 t, const IdList &ids, const bool mass, const RhoDMatrix &rho) const
	Methods to return the splitting function.

virtual double	overestimateP (const double z, const IdList &ids) const
	The concrete implementation of the overestimate of the splitting function, \(P_{\rm over}\).

virtual double	ratioP (const double z, const Energy2 t, const IdList &ids, const bool mass, const RhoDMatrix &rho) const
	The concrete implementation of the the ratio of the splitting function to the overestimate, i.e.

virtual double	integOverP (const double z, const IdList &ids, unsigned int PDFfactor=0) const
	The concrete implementation of the indefinite integral of the overestimated splitting function, \(P_{\rm over}\).

virtual double	invIntegOverP (const double r, const IdList &ids, unsigned int PDFfactor=0) const
	The concrete implementation of the inverse of the indefinite integral.

virtual vector< pair< int, Complex > >	generatePhiForward (const double z, const Energy2 t, const IdList &ids, const RhoDMatrix &)
	Method to calculate the azimuthal angle.

virtual vector< pair< int, Complex > >	generatePhiBackward (const double z, const Energy2 t, const IdList &ids, const RhoDMatrix &)
	Method to calculate the azimuthal angle for backward evolution.

virtual DecayMEPtr	matrixElement (const double z, const Energy2 t, const IdList &ids, const double phi, bool timeLike)
	Calculate the matrix element for the splitting.

Public Member Functions inherited from Herwig::SplittingFunction
	SplittingFunction ()
	The default constructor.

ShowerInteraction	interactionType () const
	Methods to return the interaction type and order for the splitting function.

ColourStructure	colourStructure () const
	Return the colour structure.

double	colourFactor (const IdList &ids) const
	Return the colour factor.

virtual bool	accept (const IdList &ids) const =0
	Purely virtual method which should determine whether this splitting function can be used for a given set of particles.

virtual bool	checkColours (const IdList &ids) const
	Method to check the colours are correct.

virtual double	P (const double z, const Energy2 t, const IdList &ids, const bool mass, const RhoDMatrix &rho) const =0
	Methods to return the splitting function.

virtual double	overestimateP (const double z, const IdList &ids) const =0
	Purely virtual method which should return an overestimate of the splitting function, \(P_{\rm over}\) such that the result \(P_{\rm over}\geq P\).

virtual double	ratioP (const double z, const Energy2 t, const IdList &ids, const bool mass, const RhoDMatrix &rho) const =0
	Purely virtual method which should return the ratio of the splitting function to the overestimate, i.e.

virtual double	integOverP (const double z, const IdList &ids, unsigned int PDFfactor=0) const =0
	Purely virtual method which should return the indefinite integral of the overestimated splitting function, \(P_{\rm over}\).

virtual double	invIntegOverP (const double r, const IdList &ids, unsigned int PDFfactor=0) const =0
	Purely virtual method which should return the inverse of the indefinite integral of the overestimated splitting function, \(P_{\rm over}\) which is used to generate the value of \(z\).

virtual void	colourConnection (tShowerParticlePtr parent, tShowerParticlePtr first, tShowerParticlePtr second, ShowerPartnerType partnerType, const bool back) const
	Purely virtual method which should make the proper colour connection between the emitting parent and the branching products.

virtual vector< pair< int, Complex > >	generatePhiForward (const double z, const Energy2 t, const IdList &ids, const RhoDMatrix &)=0
	Method to calculate the azimuthal angle for forward evolution.

virtual vector< pair< int, Complex > >	generatePhiBackward (const double z, const Energy2 t, const IdList &ids, const RhoDMatrix &)=0
	Method to calculate the azimuthal angle for backward evolution.

virtual DecayMEPtr	matrixElement (const double z, const Energy2 t, const IdList &ids, const double phi, bool timeLike)=0
	Calculate the matrix element for the splitting.

bool	angularOrdered () const
	Whether or not the interaction is angular ordered.

bool	pTScale () const
	Scale choice.

void	evaluateFinalStateScales (ShowerPartnerType type, Energy scale, double z, tShowerParticlePtr parent, tShowerParticlePtr first, tShowerParticlePtr second)
	Functions to state scales after branching happens.

void	evaluateInitialStateScales (ShowerPartnerType type, Energy scale, double z, tShowerParticlePtr parent, tShowerParticlePtr first, tShowerParticlePtr second)
	Sort out scales for initial-state emission.

void	evaluateDecayScales (ShowerPartnerType type, Energy scale, double z, tShowerParticlePtr parent, tShowerParticlePtr first, tShowerParticlePtr second)
	Sort out scales for decay emission.

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::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
void	getCouplings (double &gH, const IdList &ids) const
	Get the couplings without running masses.

void	getCouplings (double &gH, const IdList &ids, const Energy2 t) const
	Get the couplings with running masses.

Clone Methods.
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.

Protected Member Functions inherited from Herwig::SplittingFunction
void	colourFactor (double in)
	Set the colour factor.

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)

Standard Interfaced functions.
double	ghqq_
	Higgs couplings.

tcHwSMPtr	_theSM
	Pointer to the SM object.

virtual void	doinit ()
	Initialize this object after the setup phase before saving an EventGenerator to disk.

HalfHalfZeroEWSplitFn &	operator= (const HalfHalfZeroEWSplitFn &)=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::SplittingFunction
static void	Init ()
	The standard Init function used to initialize the interfaces.

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

The HalfHalfZeroEWSplitFn class implements the splitting function for \(\frac12\to q\frac12 h\) where the spin-0 higgs particle is a massive scalar boson.

See also: The interfaces defined for HalfHalfZeroEWSplitFn.

Definition at line 22 of file HalfHalfZeroEWSplitFn.h.

Member Function Documentation

◆ accept()

virtual bool Herwig::HalfHalfZeroEWSplitFn::accept ( const IdList & ids ) const

virtual

Concrete implementation of the method to determine whether this splitting function can be used for a given set of particles.

Parameters

ids	The PDG codes for the particles in the splitting.

Implements Herwig::SplittingFunction.

◆ clone()

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

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ doinit()

virtual void Herwig::HalfHalfZeroEWSplitFn::doinit ( )

protectedvirtual

Initialize this object after the setup phase before saving an EventGenerator to disk.

Exceptions

InitException if object could not be initialized properly.

Reimplemented from Herwig::SplittingFunction.

◆ fullclone()

virtual IBPtr Herwig::HalfHalfZeroEWSplitFn::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.

◆ generatePhiBackward()

virtual vector< pair< int, Complex > > Herwig::HalfHalfZeroEWSplitFn::generatePhiBackward	(	const double	z,
		const Energy2	t,
		const IdList &	ids,
		const RhoDMatrix &
	)

virtual

Method to calculate the azimuthal angle for backward evolution.

Parameters

z	The energy fraction
t	The scale \(t=2p_j\cdot p_k\).
ids	The PDG codes for the particles in the splitting.
The	azimuthal angle, \(\phi\).

Returns: The weight

Implements Herwig::SplittingFunction.

◆ generatePhiForward()

virtual vector< pair< int, Complex > > Herwig::HalfHalfZeroEWSplitFn::generatePhiForward	(	const double	z,
		const Energy2	t,
		const IdList &	ids,
		const RhoDMatrix &
	)

virtual

Method to calculate the azimuthal angle.

Parameters

z	The energy fraction
t	The scale \(t=2p_j\cdot p_k\).
ids	The PDG codes for the particles in the splitting.
The	azimuthal angle, \(\phi\).

Returns: The weight

Implements Herwig::SplittingFunction.

◆ Init()

static void Herwig::HalfHalfZeroEWSplitFn::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.

◆ integOverP()

virtual double Herwig::HalfHalfZeroEWSplitFn::integOverP	(	const double	z,
		const IdList &	ids,
		unsigned int	PDFfactor = `0`
	)		const

virtual

The concrete implementation of the indefinite integral of the overestimated splitting function, \(P_{\rm over}\).

Parameters

z	The energy fraction.
ids	The PDG codes for the particles in the splitting.
PDFfactor	Which additional factor to include for the PDF 0 is no additional factor, 1 is \(1/z\), 2 is \(1/(1-z)\) and 3 is \(1/z/(1-z)\)

Implements Herwig::SplittingFunction.

◆ invIntegOverP()

virtual double Herwig::HalfHalfZeroEWSplitFn::invIntegOverP	(	const double	r,
		const IdList &	ids,
		unsigned int	PDFfactor = `0`
	)		const

virtual

The concrete implementation of the inverse of the indefinite integral.

Parameters

r	Value of the splitting function to be inverted
ids	The PDG codes for the particles in the splitting.
PDFfactor	Which additional factor to include for the PDF 0 is no additional factor, 1 is \(1/z\), 2 is \(1/(1-z)\) and 3 is \(1/z/(1-z)\)

Implements Herwig::SplittingFunction.

◆ matrixElement()

virtual DecayMEPtr Herwig::HalfHalfZeroEWSplitFn::matrixElement	(	const double	z,
		const Energy2	t,
		const IdList &	ids,
		const double	phi,
		bool	timeLike
	)

virtual

Calculate the matrix element for the splitting.

Parameters

z	The energy fraction
t	The scale \(t=2p_j\cdot p_k\).
ids	The PDG codes for the particles in the splitting.
The	azimuthal angle, \(\phi\).

Implements Herwig::SplittingFunction.

◆ operator=()

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

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ overestimateP()

virtual double Herwig::HalfHalfZeroEWSplitFn::overestimateP	(	const double	z,
		const IdList &	ids
	)		const

virtual

The concrete implementation of the overestimate of the splitting function, \(P_{\rm over}\).

Parameters

z	The energy fraction.
ids	The PDG codes for the particles in the splitting.

Implements Herwig::SplittingFunction.

◆ P()

virtual double Herwig::HalfHalfZeroEWSplitFn::P	(	const double	z,
		const Energy2	t,
		const IdList &	ids,
		const bool	mass,
		const RhoDMatrix &	rho
	)		const

virtual

Methods to return the splitting function.

The concrete implementation of the splitting function, \(P(z,t)\).

Parameters

z	The energy fraction.
t	The scale.
ids	The PDG codes for the particles in the splitting.
mass	Whether or not to include the mass dependent terms
rho	The spin density matrix

Implements Herwig::SplittingFunction.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ ratioP()

virtual double Herwig::HalfHalfZeroEWSplitFn::ratioP	(	const double	z,
		const Energy2	t,
		const IdList &	ids,
		const bool	mass,
		const RhoDMatrix &	rho
	)		const

virtual

The concrete implementation of the the ratio of the splitting function to the overestimate, i.e.

\(P(z,t)/P_{\rm over}(z)\).

Parameters

z	The energy fraction.
t	The scale.
ids	The PDG codes for the particles in the splitting.
mass	Whether or not to include the mass dependent terms
rho	The spin density matrix

Implements Herwig::SplittingFunction.

Member Data Documentation

◆ _theSM

tcHwSMPtr Herwig::HalfHalfZeroEWSplitFn::_theSM

private

Pointer to the SM object.

Definition at line 213 of file HalfHalfZeroEWSplitFn.h.

◆ ghqq_

double Herwig::HalfHalfZeroEWSplitFn::ghqq_

private

Higgs couplings.

Definition at line 207 of file HalfHalfZeroEWSplitFn.h.

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

HalfHalfZeroEWSplitFn.h

Public Member Functions

Protected Member Functions

Standard Interfaced functions.

Functions used by the persistent I/O system.

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ accept()

◆ clone()

◆ doinit()

◆ fullclone()

◆ generatePhiBackward()

◆ generatePhiForward()

◆ Init()

◆ integOverP()

◆ invIntegOverP()

◆ matrixElement()

◆ operator=()

◆ overestimateP()

◆ P()

◆ persistentInput()

◆ persistentOutput()

◆ ratioP()

Member Data Documentation

◆ _theSM

◆ ghqq_