IFLightKinematics implements massless splittings off an initial-final dipole. More...

#include <IFLightKinematics.h>

Inheritance diagram for Herwig::IFLightKinematics:

[legend]

Public Member Functions
	IFLightKinematics ()
	The default constructor.

virtual Energy	ptMax (Energy dScale, double emX, double specX, const DipoleIndex &, const DipoleSplittingKernel &) const
	Return the maximum pt for the given dipole scale.

virtual Energy	QMax (Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &) const
	Return the maximum virtuality for the given dipole scale.

virtual Energy	PtFromQ (Energy scale, const DipoleSplittingInfo &) const
	Return the pt given a virtuality.

virtual Energy	QFromPt (Energy scale, const DipoleSplittingInfo &) const
	Return the virtuality given a pt.

virtual pair< double, double >	zBoundaries (Energy pt, const DipoleSplittingInfo &dInfo, const DipoleSplittingKernel &split) const
	Return the boundaries on the momentum fraction.

virtual bool	generateSplitting (double kappa, double xi, double phi, DipoleSplittingInfo &dIndex, const DipoleSplittingKernel &)
	Generate splitting variables given three random numbers and the momentum fractions of the emitter and spectator.

virtual void	generateKinematics (const Lorentz5Momentum &pEmitter, const Lorentz5Momentum &pSpectator, const DipoleSplittingInfo &dInfo)
	Generate the full kinematics given emitter and spectator momentum and a previously completeted DipoleSplittingInfo object.

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

virtual pair< double, double >	kappaSupport (const DipoleSplittingInfo &) const
	Return the boundaries in between the evolution variable random number is to be sampled; the lower cuoff is assumed to correspond to the infrared cutoff.

virtual pair< double, double >	xiSupport (const DipoleSplittingInfo &) const
	Return the boundaries in between the momentum fraction random number is to be sampled.

virtual Energy	dipoleScale (const Lorentz5Momentum &pEmitter, const Lorentz5Momentum &pSpectator) const
	Return the dipole scale associated to the given pair of emitter and spectator.

virtual Energy	recoilMassKin (const Lorentz5Momentum &, const Lorentz5Momentum &pSpectator) const
	Return the mass of the system absorbing the recoil in the dipole splitting.

virtual Energy	ptMax (Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split) const =0
	Return the maximum pt for the given dipole scale.

virtual Energy	ptMax (Energy dScale, double emX, double specX, const DipoleSplittingInfo &dInfo, const DipoleSplittingKernel &split) const
	Return the maximum pt for the given dipole scale.

virtual Energy	ptMax (Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split, tPPtr emitter, tPPtr spectator) const
	Return the maximum pt for the given dipole scale.

virtual Energy	QMax (Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split) const =0
	Return the maximum virtuality for the given dipole scale.

virtual Energy	QMax (Energy dScale, double emX, double specX, const DipoleSplittingInfo &dInfo, const DipoleSplittingKernel &split) const
	Return the maximum virtuality for the given dipole scale.

virtual Energy	QMax (Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split, tPPtr emitter, tPPtr spectator) const
	Return the maximum virtuality for the given dipole scale.

virtual Energy	PtFromQ (Energy scale, const DipoleSplittingInfo &) const =0
	Return the pt given a virtuality.

virtual Energy	QFromPt (Energy scale, const DipoleSplittingInfo &) const =0
	Return the virtuality given a pt.

virtual Energy	IRCutoff () const
	Return the infrared cutoff.

double	xMin () const
	Return the minimum momentum fraction for incoming partons.

Energy	generatePt (double r, Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split, double &weight) const
	Generate a pt.

virtual double	ptToRandom (Energy pt, Energy dScale, double emX, double specX, const DipoleIndex &dIndex, const DipoleSplittingKernel &split) const
	Return the random number associated to the given pt.

virtual pair< double, double >	zBoundaries (Energy pt, const DipoleSplittingInfo &dInfo, const DipoleSplittingKernel &split) const =0
	Return the boundaries on the momentum fraction.

double	generateZ (double r, Energy pt, int sampling, const DipoleSplittingInfo &dInfo, const DipoleSplittingKernel &split, double &weight) const
	Generate a z value flat.

virtual bool	generateSplitting (double kappa, double xi, double phi, DipoleSplittingInfo &info, const DipoleSplittingKernel &)=0
	Generate splitting variables given three random numbers and the momentum fractions of the emitter and spectator.

double	jacobian () const
	Get the splitting phasespace weight associated to the last call to generateSplitting.

virtual bool	haveOverestimate () const
	Return true, if this splitting kinematics class is capable of delivering an overestimate to the jacobian.

virtual double	jacobianOverestimate () const
	Return the overestimated jacobian for the last generated parameters.

Energy	lastPt () const
	Return the last generated pt.

double	lastZ () const
	Return the last generated momentum fraction.

double	lastPhi () const
	Return the last calculated zPrime for massive FF and decay dipoles.

double	lastEmitterZ () const
	Return the momentum fraction, by which the emitter's momentum fraction should be divided after the splitting.

double	lastSpectatorZ () const
	Return the momentum fraction, by which the spectator's momentum fraction should be divided after the splitting.

const vector< double > &	lastSplittingParameters () const
	Return any additional parameters needed to evaluate the splitting kernel or to generate the full splitting.

void	prepareSplitting (DipoleSplittingInfo &dInfo)
	Complete a DipoleSplittingInfo object with the parameters generated by the last call to generateSplitting()

virtual void	generateKinematics (const Lorentz5Momentum &pEmitter, const Lorentz5Momentum &pSpectator, const DipoleSplittingInfo &dInfo)=0
	Generate the full kinematics given emitter and spectator momentum and a previously completeted DipoleSplittingInfo object.

const Lorentz5Momentum &	lastEmitterMomentum () const
	Return the emitter's momentum after the splitting.

const Lorentz5Momentum &	lastSpectatorMomentum () const
	Return the spectator's momentum after the splitting.

const Lorentz5Momentum &	lastEmissionMomentum () const
	Return the emission's momentum.

virtual bool	doesTransform () const

virtual void	setTransformation ()
	Calculate and store a required Lorentz transformation.

int	openZBoundaries () const

virtual void	transform (PPtr &)

virtual bool	isDecay () const
	SW 30/01/2019: Test feature only, not for release.

virtual void	decayRecoil (PList &)
	Perform the recoil in the case of a decayed parton.

virtual Lorentz5Momentum	pVector (const Lorentz5Momentum &pEmitter, const Lorentz5Momentum &, const DipoleSplittingInfo &) const
	Return the pVector, required for spin correlations.

virtual Lorentz5Momentum	nVector (const Lorentz5Momentum &, const Lorentz5Momentum &pSpectator, const DipoleSplittingInfo &) const
	Return the nVector, required for spin correlations.

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< IFLightKinematics >	initIFLightKinematics
	The static object used to initialize the description of this class.

bool	theCollinearScheme
	Wether or not to choose the ‘collinear’ scheme.

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.

IFLightKinematics &	operator= (const IFLightKinematics &)=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 Herwig::DipoleSplittingKinematics
enum	ZSamplingOptions { FlatZ = 0 , OneOverZ , OneOverOneMinusZ , OneOverZOneMinusZ }
	Enumerate the variants of sampling z. More...

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::DipoleSplittingKinematics
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::DipoleSplittingKinematics
Lorentz5Momentum	getKt (const Lorentz5Momentum &p1, const Lorentz5Momentum &p2, Energy pt, double phi, bool spacelike=false) const
	Calculate a transverse momentum for the given momenta, invariant pt and azimuth.

void	jacobian (double w)
	Set the splitting phasespace weight associated to the last call to generateSplitting.

void	lastPt (Energy p)
	Set the last generated pt.

void	lastZ (double z)
	Set the last generated momentum fraction.

void	lastPhi (double p)
	Set the last calculated zPrime for massive FF and decay dipoles.

void	lastEmitterZ (double z)
	Set the momentum fraction, by which the emitter's momentum fraction should be divided after the splitting.

void	lastSpectatorZ (double z)
	Set the momentum fraction, by which the spectator's momentum fraction should be divided after the splitting.

vector< double > &	splittingParameters ()
	Access any additional parameters needed to evaluate the splitting kernel or to generate the full splitting.

void	emitterMomentum (const Lorentz5Momentum &p)
	Set the emitter's momentum after the splitting.

void	spectatorMomentum (const Lorentz5Momentum &p)
	Set the spectator's momentum after the splitting.

void	emissionMomentum (const Lorentz5Momentum &p)
	Set the emission's momentum.

void	splitRecoilMomentum (const Lorentz5Momentum &mom)
	Set the momentum of the recoil system after the splitting.

const Lorentz5Momentum &	splitRecoilMomentum () const
	Return the momentum of the recoil system after splitting.

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)

Protected Attributes inherited from Herwig::DipoleSplittingKinematics
Ptr< DipoleMCCheck >::ptr	theMCCheck
	Pointer to a check histogram object.

Detailed Description

IFLightKinematics implements massless splittings off an initial-final dipole.

Author: Simon Platzer

See also: The interfaces defined for IFLightKinematics.

Definition at line 31 of file IFLightKinematics.h.

Member Function Documentation

◆ clone()

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

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ fullclone()

virtual IBPtr Herwig::IFLightKinematics::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.

◆ generateKinematics()

virtual void Herwig::IFLightKinematics::generateKinematics	(	const Lorentz5Momentum &	pEmitter,
		const Lorentz5Momentum &	pSpectator,
		const DipoleSplittingInfo &	dInfo
	)

virtual

Generate the full kinematics given emitter and spectator momentum and a previously completeted DipoleSplittingInfo object.

Implements Herwig::DipoleSplittingKinematics.

◆ generateSplitting()

virtual bool Herwig::IFLightKinematics::generateSplitting	(	double	kappa,
		double	xi,
		double	phi,
		DipoleSplittingInfo &	dIndex,
		const DipoleSplittingKernel &
	)

virtual

Generate splitting variables given three random numbers and the momentum fractions of the emitter and spectator.

Return true on success.

Implements Herwig::DipoleSplittingKinematics.

◆ Init()

static void Herwig::IFLightKinematics::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.

◆ operator=()

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

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ PtFromQ()

virtual Energy Herwig::IFLightKinematics::PtFromQ	(	Energy	scale,
		const DipoleSplittingInfo &
	)		const

virtual

Return the pt given a virtuality.

Implements Herwig::DipoleSplittingKinematics.

◆ ptMax()

virtual Energy Herwig::IFLightKinematics::ptMax	(	Energy	dScale,
		double	emX,
		double	specX,
		const DipoleIndex &	,
		const DipoleSplittingKernel &
	)		const

virtual

Return the maximum pt for the given dipole scale.

Implements Herwig::DipoleSplittingKinematics.

◆ QFromPt()

virtual Energy Herwig::IFLightKinematics::QFromPt	(	Energy	scale,
		const DipoleSplittingInfo &
	)		const

virtual

Return the virtuality given a pt.

Implements Herwig::DipoleSplittingKinematics.

◆ QMax()

virtual Energy Herwig::IFLightKinematics::QMax	(	Energy	dScale,
		double	emX,
		double	specX,
		const DipoleIndex &	dIndex,
		const DipoleSplittingKernel &
	)		const

virtual

Return the maximum virtuality for the given dipole scale.

Implements Herwig::DipoleSplittingKinematics.

◆ zBoundaries()

virtual pair< double, double > Herwig::IFLightKinematics::zBoundaries	(	Energy	pt,
		const DipoleSplittingInfo &	dInfo,
		const DipoleSplittingKernel &	split
	)		const

virtual

Return the boundaries on the momentum fraction.

Implements Herwig::DipoleSplittingKinematics.

Member Data Documentation

◆ initIFLightKinematics

ClassDescription<IFLightKinematics> Herwig::IFLightKinematics::initIFLightKinematics

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 147 of file IFLightKinematics.h.

◆ theCollinearScheme

bool Herwig::IFLightKinematics::theCollinearScheme

private

Wether or not to choose the ‘collinear’ scheme.

Definition at line 160 of file IFLightKinematics.h.

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

IFLightKinematics.h

Public Member Functions

Clone Methods.

Functions used by the persistent I/O system.

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ clone()

◆ fullclone()

◆ generateKinematics()

◆ generateSplitting()

◆ Init()

◆ operator=()

◆ persistentInput()

◆ persistentOutput()

◆ PtFromQ()

◆ ptMax()

◆ QFromPt()

◆ QMax()

◆ zBoundaries()

Member Data Documentation

◆ initIFLightKinematics

◆ theCollinearScheme