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Herwig  7.1.5
Herwig::QTildeFinder Class Reference

The QTildeFinder class is responsible for finding the partners and setting the initial evolution scales for the shower evolution described in JHEP 0312:045,2003. More...

#include <QTildeFinder.h>

Inheritance diagram for Herwig::QTildeFinder:

Public Member Functions

 QTildeFinder ()
 The default constructor.
 
pair< Energy, Energy > calculateFinalFinalScales (Lorentz5Momentum p1, Lorentz5Momentum p2, bool colouredfirst)
 Calculate the initial evolution scales given momenta.
 
pair< Energy, Energy > calculateInitialInitialScales (const Lorentz5Momentum &p1, const Lorentz5Momentum &p2)
 Calculate the initial evolution scales given momenta.
 
pair< Energy, Energy > calculateInitialFinalScales (const Lorentz5Momentum &pb, const Lorentz5Momentum &pc, const bool isDecayCase)
 Calculate the initial evolution scales given momenta.
 
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 Herwig::PartnerFinder
 PartnerFinder ()
 The default constructor.
 
virtual void setInitialEvolutionScales (const ShowerParticleVector &particles, const bool isDecayCase, ShowerInteraction, const bool setPartners=true)
 Given in input a collection of particles (ShowerParticle objects), each of these methods set the initial evolution scales of those particles, between the ones given in input, that do not have yet their evolution scale set. More...
 
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 Herwig::PartnerFinder
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

virtual pair< Energy, Energy > calculateFinalFinalScales (const ShowerPPair &)
 Given a pair of particles, supposedly partners w.r.t. More...
 
virtual pair< Energy, Energy > calculateInitialInitialScales (const ShowerPPair &)
 Calculate the initial evolution scales for two initial-state particles.
 
virtual pair< Energy, Energy > calculateInitialFinalScales (const ShowerPPair &, const bool isDecayCase)
 Calculate the initial evolution scales for one initial and one final-state particles.
 
unsigned int finalFinalConditions () const
 Access function for the initial conditions for the shower. More...
 
unsigned int initialFinalDecayConditions () const
 Initial conditions for the shower of an initial-final decay colour connection. More...
 
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 Herwig::PartnerFinder
vector< pair< ShowerPartnerType, tShowerParticlePtr > > findQCDPartners (tShowerParticlePtr particle, const ShowerParticleVector &particles)
 Find the QCD partners. More...
 
vector< pair< double, tShowerParticlePtr > > findQEDPartners (tShowerParticlePtr particle, const ShowerParticleVector &particles, const bool isDecayCase)
 Find the QED partners. More...
 
virtual void setInitialQCDEvolutionScales (const ShowerParticleVector &particles, const bool isDecayCase, const bool setPartners=true)
 Members to set the scales for different interactions. More...
 
virtual void setInitialQEDEvolutionScales (const ShowerParticleVector &particles, const bool isDecayCase, const bool setPartners=true)
 Set initial scales for a QED interaction.
 
virtual pair< Energy, Energy > calculateInitialEvolutionScales (const ShowerPPair &, const bool isDecayCase)
 Given a pair of particles, supposedly partners w.r.t. 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

QTildeFinderoperator= (const QTildeFinder &)=delete
 The assignment operator is private and must never be called. More...
 

Private Attributes

unsigned int _finalFinalConditions
 Flags controlling the initial conditions for the shower. More...
 
unsigned int _initialFinalDecayConditions
 Initial conditions for the shower with an initial-final decay colour connection. More...
 
unsigned int _initialInitialConditions
 Initial conditions for the shower with an initial-initial colour connection. More...
 

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

The QTildeFinder class is responsible for finding the partners and setting the initial evolution scales for the shower evolution described in JHEP 0312:045,2003.

See also
The interfaces defined for QTildeFinder.

Definition at line 31 of file QTildeFinder.h.

Member Function Documentation

◆ calculateFinalFinalScales()

virtual pair<Energy,Energy> Herwig::QTildeFinder::calculateFinalFinalScales ( const ShowerPPair )
protectedvirtual

Given a pair of particles, supposedly partners w.r.t.

an interaction, this method returns their initial evolution scales as a pair. If something wrong happens, it returns the null (ZERO,ZERO) pair. This method is used by the above setXXXInitialEvolutionScales methods. Calculate the initial evolution scales for two final-state particles

Implements Herwig::PartnerFinder.

◆ clone()

virtual IBPtr Herwig::QTildeFinder::clone ( ) const
inlineprotectedvirtual

Make a simple clone of this object.

Returns
a pointer to the new object.

Implements ThePEG::InterfacedBase.

Definition at line 146 of file QTildeFinder.h.

◆ finalFinalConditions()

unsigned int Herwig::QTildeFinder::finalFinalConditions ( ) const
inlineprotected

Access function for the initial conditions for the shower.

Initial conditions for the shower of a final-final colour connection

  • 0 is the symmetric choice
  • 1 is maximal emmision from the coloured particle
  • 2 is maximal emmision from the anticoloured particle
  • 3 is randomly selected maximal emmision

Definition at line 125 of file QTildeFinder.h.

◆ fullclone()

virtual IBPtr Herwig::QTildeFinder::fullclone ( ) const
inlineprotectedvirtual

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.

Definition at line 152 of file QTildeFinder.h.

◆ Init()

static void Herwig::QTildeFinder::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.

◆ initialFinalDecayConditions()

unsigned int Herwig::QTildeFinder::initialFinalDecayConditions ( ) const
inlineprotected

Initial conditions for the shower of an initial-final decay colour connection.

  • 0 is the symmetric choice
  • 1 is maximal emission from the decay product
  • 2 is the smooth choice

Definition at line 134 of file QTildeFinder.h.

◆ operator=()

QTildeFinder& Herwig::QTildeFinder::operator= ( const QTildeFinder )
privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

Member Data Documentation

◆ _finalFinalConditions

unsigned int Herwig::QTildeFinder::_finalFinalConditions
private

Flags controlling the initial conditions for the shower.

Initial conditions for the shower with a final-final colour connection

Definition at line 173 of file QTildeFinder.h.

◆ _initialFinalDecayConditions

unsigned int Herwig::QTildeFinder::_initialFinalDecayConditions
private

Initial conditions for the shower with an initial-final decay colour connection.

This is done according to the top decay colour connection calculation in JHEP12(2003)_045. The options act as follows: 0: This is the default 'symmetric' choice which more or less divides the phase space evenly between the parent and its charged child. 1: This 'maximal' choice maximises the phase space available for gluons emitted from the charged child. 2: This (experimental) 'smooth' choice does not suffer from a discontinuity at the boundary between the region populated by emissions from the charged child and the region populated by emissions from the parent. This does, however, mean that the phase space available for emissions from the charged child is fairly minimal.

Definition at line 189 of file QTildeFinder.h.

◆ _initialInitialConditions

unsigned int Herwig::QTildeFinder::_initialInitialConditions
private

Initial conditions for the shower with an initial-initial colour connection.

This is done according to the colour connection calculation in JHEP12(2003)_045. The options act as follows: 0: This is the default 'symmetric' choice which more or less divides the phase space evenly between the two incoming partons. 1: This increases the phase space for emission from "parton b". 2: This increases the phase space for emission from "parton c".

Definition at line 200 of file QTildeFinder.h.


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