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Herwig  7.1.4
Herwig::PartonSplitter Class Reference

This class splits the gluons from the end of the shower. More...

#include <PartonSplitter.h>

Inheritance diagram for Herwig::PartonSplitter:

Public Member Functions

 PartonSplitter ()
 Default constructor.
 
void split (PVector &tagged)
 This method does the nonperturbative splitting of: time-like gluons. More...
 
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 ()
 The standard Init function used to initialize the interfaces. More...
 
- 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...
 
Standard Interfaced functions.
virtual void doinit ()
 Initialize this object after the setup phase before saving an EventGenerator to disk. 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 doinitrun ()
 
virtual void dofinish ()
 
virtual IVector getReferences ()
 
virtual void rebind (const TranslationMap &)
 
virtual void readSetup (istream &is)
 
virtual void doupdate ()
 
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

PartonSplitteroperator= (const PartonSplitter &)
 Private and non-existent assignment operator.
 
void splitTimeLikeGluon (tcPPtr gluon, PPtr &quark, PPtr &anti)
 Non-perturbatively split a time-like gluon, if something goes wrong null pointers are returned. More...
 

Private Attributes

double _splitPwtUquark
 
double _splitPwtDquark
 
double _splitPwtSquark
 
Selector< PDPtr, double > _quarkSelector
 The selector to pick the type of quark.
 
Length _gluonDistance
 A pointer to a Herwig::HadronSelector object for generating hadrons. More...
 
int _splitGluon
 Flag used to determine between normal gluon splitting and alternative gluon splitting.
 

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 splits the gluons from the end of the shower.

Author
Philip Stephens
Alberto Ribon

This class does all of the nonperturbative parton splittings needed immediately after the end of the showering (both initial and final), as very first step of the cluster hadronization.

the quarks are attributed with different weights for the splitting by default only the splitting in u and d quarks is allowed the option "set /Herwig/Hadronization/PartonSplitter:Split 1" allows for additional splitting into s quarks based on some weight in order for that to work the mass of the strange quark has to be changed from the default value s.t. m_g > 2m_s

Definition at line 44 of file PartonSplitter.h.

Member Function Documentation

◆ clone()

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

Make a simple clone of this object.

Returns
a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ doinit()

virtual void Herwig::PartonSplitter::doinit ( )
protectedvirtual

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

Exceptions
InitExceptionif object could not be initialized properly.

Reimplemented from ThePEG::InterfacedBase.

◆ fullclone()

virtual IBPtr Herwig::PartonSplitter::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::PartonSplitter::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.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

◆ split()

void Herwig::PartonSplitter::split ( PVector tagged)

This method does the nonperturbative splitting of: time-like gluons.

At the end of the shower the gluons should be on a "physical" mass shell and should therefore be time-like.

Parameters
taggedThe tagged particles to be split
Returns
The particles which were not split and the products of splitting.

◆ splitTimeLikeGluon()

void Herwig::PartonSplitter::splitTimeLikeGluon ( tcPPtr  gluon,
PPtr quark,
PPtr anti 
)
private

Non-perturbatively split a time-like gluon, if something goes wrong null pointers are returned.

Parameters
gluonThe gluon to be split
quarkThe quark produced in the splitting
antiThe antiquark produced in the splitting

Member Data Documentation

◆ _gluonDistance

Length Herwig::PartonSplitter::_gluonDistance
private

A pointer to a Herwig::HadronSelector object for generating hadrons.

c tau for gluon decays

Definition at line 160 of file PartonSplitter.h.


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