FFMassiveInvertedTildeKinematics inverts the final-final tilde kinematics. More...

#include <FFMassiveInvertedTildeKinematics.h>

Inheritance diagram for Herwig::FFMassiveInvertedTildeKinematics:

[legend]

Public Member Functions
virtual bool	doMap (const double *)
	Perform the mapping of the tilde kinematics for the last selected process and store all dimensionless variables in the subtractionParameters() vector.

virtual Energy	lastPt () const
	Return the pt associated to the last generated splitting.

virtual double	lastZ () const
	Return the momentum fraction associated to the last splitting.

virtual Energy	ptMax () const
	Return the upper bound on pt.

virtual pair< double, double >	zBounds (Energy pt, Energy hardPt=ZERO) const
	Given a pt, return the boundaries on z Note that allowing parton masses these bounds may be too loose.

bool	ptzAllowed (pair< Energy, double > ptz, vector< double > *values) const
	For generated pt and z, check if this point is kinematically allowed.

virtual pair< Energy, double >	generatePtZ (double &jac, const double r, vector< double > values) const
	Generate pt and z.

template<class T >
T	rootOfKallen (T a, T b, T c) const
	Triangular / Kallen function.

ThreeVector< double >	rotateToZ (Lorentz5Momentum &pTarget, Lorentz5Momentum &p1)
	stolen from FFMassiveKinematics.h Perform a rotation on both momenta such that the first one will point along the (positive) z axis.

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

const Lorentz5Momentum &	realEmitterMomentum () const
	Return the momentum of the emitter in the real emission process.

const Lorentz5Momentum &	realEmissionMomentum () const
	Return the momentum of the emission in the real emission process.

const Lorentz5Momentum &	realSpectatorMomentum () const
	Return the momentum of the spectator in the real emission process.

const Lorentz5Momentum &	bornEmitterMomentum () const
	Return the momentum of the emitter in the underlying Born process.

const Lorentz5Momentum &	bornSpectatorMomentum () const
	Return the momentum of the spectator in the underlying Born process.

double	emitterX () const
	Return the momentum fraction of the emitter.

double	spectatorX () const
	Return the momentum fraction of the spectator.

const vector< double > &	subtractionParameters () const
	Return the vector of dimensionless variables calculated.

virtual bool	doesTransform () const
	Return true, if this InvertedTildeKinematics object needs to transform all other particles in the process except the emitter, emission and spectator.

virtual Lorentz5Momentum	transform (const Lorentz5Momentum &p) const
	If this InvertedTildeKinematics object needs to transform all other particles in the process except the emitter, emission and spectator, return the transformed momentum.

Energy2	sHat () const
	Return the centre of mass energy for the underlying Born configuration.

Ptr< InvertedTildeKinematics >::ptr	cloneMe () const
	Clone this object.

void	prepare (tcStdXCombPtr newRealXComb, tcStdXCombPtr newBornXComb)
	Prepare given a dipole, and XCombs describing the real emission and underlying Born processes, respectively.

tcStdXCombPtr	realXComb () const
	Return the real xcomb.

tcStdXCombPtr	bornXComb () const
	Return the Born xcomb.

void	dipole (Ptr< SubtractionDipole >::tptr dip)
	Set the current dipole.

Ptr< SubtractionDipole >::tptr	dipole ()
	Return the current dipole.

Ptr< SubtractionDipole >::tcptr	dipole () const
	Return the current dipole.

virtual int	nDimRadiation () const
	Return the number of random numbers needed to generate a real emission configuration off the underlying Born configuration.

void	ptCut (Energy pt)
	Set an optional cutoff on the emission's transverse momentum.

Energy	ptCut () const
	Return the optional cutoff on the emission's transverse momentum.

virtual int	evolutionVariable () const
	Return the random number index corresponding to the evolution variable.

virtual double	evolutionCutoff () const
	Return the cutoff on the evolution random number corresponding to the pt cut.

virtual Energy	lastScale () const
	Return the relevant dipole scale.

virtual pair< Energy, double >	generatePtZ (double &jac, const double r, double power=1., vector< double > values=NULL) const
	Generate pt and z.

double	jacobian () const
	Return the single particle phase space weight in units of sHat() for the last selected configuration.

cPDPtr	realEmitterData () const
	Return the particle type of the emitter in the real emission process.

cPDPtr	realEmissionData () const
	Return the particle type of the emission in the real emission process.

cPDPtr	realSpectatorData () const
	Return the particle type of the spectator in the real emission process.

cPDPtr	bornEmitterData () const
	Return the particle type of the emitter in the underlying Born process.

cPDPtr	bornSpectatorData () const
	Return the particle type of the spectator in the underlying Born process.

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

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.

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.

FFMassiveInvertedTildeKinematics &	operator= (const FFMassiveInvertedTildeKinematics &)=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 Herwig::InvertedTildeKinematics
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::InvertedTildeKinematics
virtual void	rebind (const TranslationMap &trans)
	Rebind pointer to other Interfaced objects.

virtual IVector	getReferences ()
	Return a vector of all pointers to Interfaced objects used in this object.

Lorentz5Momentum &	realEmitterMomentum ()
	Access the momentum of the emitter in the real emission process.

Lorentz5Momentum &	realEmissionMomentum ()
	Access the momentum of the emission in the real emission process.

Lorentz5Momentum &	realSpectatorMomentum ()
	Access the momentum of the spectator in the real emission process.

vector< double > &	subtractionParameters ()
	Access the vector of dimensionless variables calculated.

void	jacobian (double w)
	Set the single particle phase space weight in units of sHat() for the last selected configuration.

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.

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

FFMassiveInvertedTildeKinematics inverts the final-final tilde kinematics.

Author: Simon Platzer, Stephen Webster

Definition at line 29 of file FFMassiveInvertedTildeKinematics.h.

Member Function Documentation

◆ clone()

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

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ doMap()

virtual bool Herwig::FFMassiveInvertedTildeKinematics::doMap ( const double * )

virtual

Perform the mapping of the tilde kinematics for the last selected process and store all dimensionless variables in the subtractionParameters() vector.

Return false, if the calculation of the real kinematics was impossible for the selected configuration and true on success.

Implements Herwig::InvertedTildeKinematics.

◆ fullclone()

virtual IBPtr Herwig::FFMassiveInvertedTildeKinematics::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.

◆ Init()

static void Herwig::FFMassiveInvertedTildeKinematics::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.

◆ lastPt()

virtual Energy Herwig::FFMassiveInvertedTildeKinematics::lastPt ( ) const

virtual

Return the pt associated to the last generated splitting.

Implements Herwig::InvertedTildeKinematics.

◆ lastZ()

virtual double Herwig::FFMassiveInvertedTildeKinematics::lastZ ( ) const

virtual

Return the momentum fraction associated to the last splitting.

Implements Herwig::InvertedTildeKinematics.

◆ operator=()

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

privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters

os	the persistent output stream written to.

◆ ptMax()

virtual Energy Herwig::FFMassiveInvertedTildeKinematics::ptMax ( ) const

virtual

Return the upper bound on pt.

Implements Herwig::InvertedTildeKinematics.

◆ rootOfKallen()

template<class T >

T Herwig::FFMassiveInvertedTildeKinematics::rootOfKallen	(	T	a,
		T	b,
		T	c
	)		const

inline

Triangular / Kallen function.

Definition at line 81 of file FFMassiveInvertedTildeKinematics.h.

References ThePEG::sqrt().

◆ rotateToZ()

ThreeVector< double > Herwig::FFMassiveInvertedTildeKinematics::rotateToZ	(	Lorentz5Momentum &	pTarget,
		Lorentz5Momentum &	p1
	)

inline

stolen from FFMassiveKinematics.h Perform a rotation on both momenta such that the first one will point along the (positive) z axis.

Rotate back to the original reference frame by applying rotateUz(returnedVector) to each momentum.

Definition at line 91 of file FFMassiveInvertedTildeKinematics.h.

References ThePEG::sqr(), ThePEG::sqrt(), and ThePEG::ThreeVector< typename Value >::unit().

◆ zBounds()

virtual pair< double, double > Herwig::FFMassiveInvertedTildeKinematics::zBounds	(	Energy	pt,
		Energy	hardPt = `ZERO`
	)		const

virtual

Given a pt, return the boundaries on z Note that allowing parton masses these bounds may be too loose.

Implements Herwig::InvertedTildeKinematics.

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

FFMassiveInvertedTildeKinematics.h

Public Member Functions

Functions used by the persistent I/O system.

Clone Methods.

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ clone()

◆ doMap()

◆ fullclone()

◆ Init()

◆ lastPt()

◆ lastZ()

◆ operator=()

◆ persistentInput()

◆ persistentOutput()

◆ ptMax()

◆ rootOfKallen()

◆ rotateToZ()

◆ zBounds()