This class decays the "normal" clusters. More...

#include <ClusterDecayer.h>

Inheritance diagram for Herwig::ClusterDecayer:

[legend]

Clone Methods.
Ptr< HadronSelector >::pointer	_hadronsSelector
	Pointer to a Herwig::HadronSelector for choosing decay types.

bool	_clDirLight
	Whether a cluster decays along the perturbative parton direction.

bool	_clDirBottom

bool	_clDirCharm

bool	_clDirExotic

double	_clSmrLight
	The S parameter from decayIntoTwoHadrons.

double	_clSmrBottom

double	_clSmrCharm

double	_clSmrExotic

bool	_onshell
	Whether or not the hadrons produced should be on-shell or generated used the MassGenerator.

unsigned int	_masstry
	Number of tries to generate the masses of the decay products.

pair< PPtr, PPtr >	decayIntoTwoHadrons (tClusterPtr ptr)
	Decays the cluster into two hadrons.

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.

ClusterDecayer &	operator= (const ClusterDecayer &)=delete
	Private and non-existent assignment operator.

void	calculatePositions (const Lorentz5Momentum &, const LorentzPoint &, const Lorentz5Momentum &, const Lorentz5Momentum &, LorentzPoint &, LorentzPoint &) const
	Compute the positions of the new hadrons based on the clusters position.

Standard constructors and destructors.
	ClusterDecayer ()
	Default constructor.

void	decay (const ClusterVector &clusters, tPVector &finalhadrons)
	Decays all remaining clusters into hadrons.

void	persistentOutput (PersistentOStream &) const
	Standard ThePEG function for writing a persistent stream.

void	persistentInput (PersistentIStream &, int)
	Standard ThePEG function for reading from a persistent stream.

static void	Init ()
	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

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

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 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

This class decays the "normal" clusters.

Author: Philip Stephens; Alberto Ribon

This class decays the "normal" clusters, e.g. ones that are not heavy enough for fission, and not too light to decay into one hadron.

This class is directs the production of hadrons via 2-body cluster decays. The selection of the hadron flavours is given by Herwig::HadronSelector.

See also: HadronSelector; The interfaces defined for ClusterDecayer.

Definition at line 37 of file ClusterDecayer.h.

Member Function Documentation

◆ calculatePositions()

void Herwig::ClusterDecayer::calculatePositions	(	const Lorentz5Momentum &	,
		const LorentzPoint &	,
		const Lorentz5Momentum &	,
		const Lorentz5Momentum &	,
		LorentzPoint &	,
		LorentzPoint &
	)		const

private

Compute the positions of the new hadrons based on the clusters position.

This method calculates the positions of the children hadrons by a call to ThePEG::RandomGenerator::rndGaussTwoNumbers with width inversely proportional to the cluster mass, around the parent cluster position.

◆ clone()

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

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ decay()

void Herwig::ClusterDecayer::decay	(	const ClusterVector &	clusters,
		tPVector &	finalhadrons
	)

Decays all remaining clusters into hadrons.

This routine decays the clusters that are left after Herwig::ClusterFissioner::fission and Herwig::LightClusterDecayer::decay have been called. These are all the "normal" clusters which are not forced into hadrons by the other functions.

◆ decayIntoTwoHadrons()

pair< PPtr, PPtr > Herwig::ClusterDecayer::decayIntoTwoHadrons ( tClusterPtr ptr )

Decays the cluster into two hadrons.

This routine is used to take a given cluster and decay it into two hadrons which are returned. If one of the constituents is from the perturbative regime then the direction of the perturbative parton is remembered and the decay is preferentially in that direction. The direction of the decay is given by

\[ \cos \theta = 1 + S \log r_1 \]

where \( S \) is a parameter of the model and \( r_1 \) is a random number [0,1].

◆ fullclone()

virtual IBPtr Herwig::ClusterDecayer::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.

Member Data Documentation

◆ _clDirBottom

bool Herwig::ClusterDecayer::_clDirBottom

private

Definition at line 137 of file ClusterDecayer.h.

◆ _clDirCharm

bool Herwig::ClusterDecayer::_clDirCharm

private

Definition at line 138 of file ClusterDecayer.h.

◆ _clDirExotic

bool Herwig::ClusterDecayer::_clDirExotic

private

Definition at line 139 of file ClusterDecayer.h.

◆ _clDirLight

bool Herwig::ClusterDecayer::_clDirLight

private

Whether a cluster decays along the perturbative parton direction.

Definition at line 136 of file ClusterDecayer.h.

◆ _clSmrBottom

double Herwig::ClusterDecayer::_clSmrBottom

private

Definition at line 145 of file ClusterDecayer.h.

◆ _clSmrCharm

double Herwig::ClusterDecayer::_clSmrCharm

private

Definition at line 146 of file ClusterDecayer.h.

◆ _clSmrExotic

double Herwig::ClusterDecayer::_clSmrExotic

private

Definition at line 147 of file ClusterDecayer.h.

◆ _clSmrLight

double Herwig::ClusterDecayer::_clSmrLight

private

The S parameter from decayIntoTwoHadrons.

Definition at line 144 of file ClusterDecayer.h.

◆ _hadronsSelector

Ptr<HadronSelector>::pointer Herwig::ClusterDecayer::_hadronsSelector

private

Pointer to a Herwig::HadronSelector for choosing decay types.

Definition at line 130 of file ClusterDecayer.h.

◆ _masstry

unsigned int Herwig::ClusterDecayer::_masstry

private

Number of tries to generate the masses of the decay products.

Definition at line 159 of file ClusterDecayer.h.

◆ _onshell

bool Herwig::ClusterDecayer::_onshell

private

Whether or not the hadrons produced should be on-shell or generated used the MassGenerator.

Definition at line 154 of file ClusterDecayer.h.

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

ClusterDecayer.h

Clone Methods.

Standard constructors and destructors.

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ calculatePositions()

◆ clone()

◆ decay()

◆ decayIntoTwoHadrons()

◆ fullclone()

Member Data Documentation

◆ _clDirBottom

◆ _clDirCharm

◆ _clDirExotic

◆ _clDirLight

◆ _clSmrBottom

◆ _clSmrCharm

◆ _clSmrExotic

◆ _clSmrLight

◆ _hadronsSelector

◆ _masstry

◆ _onshell