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Herwig  7.1.5
Herwig::LightClusterDecayer Class Reference

This class performs the decay of light clusters into a single hadron. More...

#include <LightClusterDecayer.h>

Inheritance diagram for Herwig::LightClusterDecayer:

Public Member Functions

bool decay (ClusterVector &clusters, tPVector &finalhadrons)
 This method does the decay of light hadron in one hadron. More...
 
Standard constructors and destructors.
 LightClusterDecayer ()
 Default constructor.
 
Functions used by the persistent I/O system.
void persistentOutput (PersistentOStream &os) const
 Function used to write out object persistently. More...
 
void persistentInput (PersistentIStream &is, int version)
 Function used to read in object persistently. More...
 
- 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
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
- Public Member Functions inherited from ThePEG::InterfacedBase
string fullName () const
 
string name () const
 
string path () const
 
string comment () const
 
void setup (istream &is)
 
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
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
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
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
- Public Member Functions inherited from ThePEG::Base
void debug () const
 
- Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType referenceCount () const
 
- Public Member Functions inherited from ThePEG::Named
 Named (const string &newName=string())
 
const string & name () const
 
bool operator== (const Named &other) const
 
bool operator< (const Named &other) const
 

Static Public Member Functions

static void Init ()
 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 ()
 

Protected Member Functions

Clone Methods.
virtual IBPtr clone () const
 Make a simple clone of this object. More...
 
virtual IBPtr fullclone () const
 Make a clone of this object, possibly modifying the cloned object to make it sane. More...
 
- 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
 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 &)
 
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 &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
- Protected Member Functions inherited from ThePEG::Named
const Namedoperator= (const Named &other)
 
const string & name (const string &newName)
 

Private Member Functions

LightClusterDecayeroperator= (const LightClusterDecayer &)=delete
 Private and non-existent assignment operator.
 
bool reshuffling (const tcPDPtr, tClusterPtr, tClusterPtr, tClusterVector &, tPVector &finalhadrons)
 This (private) method, called by decay(), takes care of the kinematical reshuffling necessary for energy-momentum conservation.
 
bool partonicReshuffle (const tcPDPtr hadron, const PPtr cluster, tPVector &finalhadrons)
 This (private) method, called by decay(), performs reshuffling in the special case of a semileptonic partonic b/c decay. More...
 

Private Attributes

Ptr< HadronSelector >::pointer _hadronSelector
 A pointer to a Herwig::HadronSelector object used for producing hadrons.
 

Additional Inherited Members

- Public Types inherited from ThePEG::InterfacedBase
enum  InitState
 
- Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int CounterType
 
- 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

This class performs the decay of light clusters into a single hadron.

Author
Philip Stephens
Alberto Ribon

This is the class that performs the decay of light clusters into only one hadron. The major difficulty is that a kinematical reshuffling is necessary, between the cluster under consideration and its "neighbouring" clusters, to conserve energy-momentum in one-body decay. Notice that, differently from what happens in Fortran Herwig, light (that is below the threshold for the production of the lightest pair of hadrons with the proper flavours) fission products, produced by the fission of heavy clusters in ClusterFissioner have been already "decayed" into single hadron (the lightest one with proper flavour) by the same latter class, without require any reshuffling. Therefore the light clusters that are treated in this LightClusterDecayer class are produced directly (originally) by the ClusterFinder.

Notice:

  • The choice of the candidate cluster with whom to reshuffle momentum is based on the minimal space-time distance from the light cluster.
  • An alternate choice of what is considered a "neighbour" could be implemented but was not considered for Herwig.
See also
HadronSelector
The interfaces defined for LightClusterDecayer.

Definition at line 53 of file LightClusterDecayer.h.

Member Function Documentation

◆ clone()

virtual IBPtr Herwig::LightClusterDecayer::clone ( ) const
protectedvirtual

Make a simple clone of this object.

Returns
a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ decay()

bool Herwig::LightClusterDecayer::decay ( ClusterVector clusters,
tPVector finalhadrons 
)

This method does the decay of light hadron in one hadron.

This method requires a kinematical reshuffling for energy-momentum conservation. This is done explicitly by the (private) method reshuffling().

◆ fullclone()

virtual IBPtr Herwig::LightClusterDecayer::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.

◆ partonicReshuffle()

bool Herwig::LightClusterDecayer::partonicReshuffle ( const tcPDPtr  hadron,
const PPtr  cluster,
tPVector finalhadrons 
)
private

This (private) method, called by decay(), performs reshuffling in the special case of a semileptonic partonic b/c decay.

Parameters
hadronThe hadron to be produced
clusterThe cluster to be reshuffled
finalhadronsThe vector of outgoing hadrons

◆ persistentInput()

void Herwig::LightClusterDecayer::persistentInput ( PersistentIStream is,
int  version 
)

Function used to read in object persistently.

Parameters
isthe persistent input stream read from.
versionthe version number of the object when written.

◆ persistentOutput()

void Herwig::LightClusterDecayer::persistentOutput ( PersistentOStream os) const

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

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