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Herwig  7.1.4

The Dipole class is used by the dipole shower to represent a dipole of two coloured partons. More...

#include <Dipole.h>

Public Member Functions

 Dipole ()
 The default constructor.
 
 Dipole (const pair< PPtr, PPtr > &newParticles, const pair< PDF, PDF > &newPDFs, pair< double, double > newFractions, pair< Energy, Energy > newScales)
 The standard constructor.
 
 Dipole (const pair< PPtr, PPtr > &newParticles, const pair< PDF, PDF > &newPDFs, pair< double, double > newFractions, const pair< bool, bool > decaying=pair< bool, bool >(false, false), pair< Energy, Energy > newScales=pair< Energy, Energy >(ZERO, ZERO))
 The standard constructor.
 
tPPtr leftParticle () const
 Get the left particle.
 
tPPtr rightParticle () const
 Get the right particle.
 
const PDFleftPDF () const
 Get the left PDF.
 
const PDFrightPDF () const
 Get the right PDF.
 
double leftFraction () const
 Get the left fraction.
 
double rightFraction () const
 Get the right fraction.
 
bool leftDecaying ()
 Get the bool indicating incoming decay for the left particle, for debugging only.
 
bool rightDecaying ()
 Get the bool indicating incoming decay for the right particle, for debugging only.
 
void leftParticle (PPtr p)
 Set the left particle.
 
void rightParticle (PPtr p)
 Set the right particle.
 
void leftPDF (const PDF &p)
 Set the left PDF.
 
void rightPDF (const PDF &p)
 Set the right PDF.
 
void leftFraction (double x)
 Set the momentum fraction for the left particle.
 
void rightFraction (double x)
 Set the momentum fraction for the right particle.
 
Energy leftScale () const
 Get the scale for the left particle.
 
void leftScale (Energy s)
 Set the scale for the left particle.
 
Energy rightScale () const
 Get the scale for the right particle.
 
void rightScale (Energy s)
 Set the scale for the right particle.
 
void leftDecaying (bool decaying)
 Set the decayed particle indicator for the left particle.
 
void rightDecaying (bool decaying)
 Set the decayed particle indicator for the right particle.
 
void update ()
 Update information, if modified.
 
const DipoleIndexindex (pair< bool, bool > conf) const
 Return the dipole index for the selected emitter-spectator assignment.
 
tPPtr emitter (pair< bool, bool > conf) const
 Return the emitter particle for the selected configuration.
 
tPPtr spectator (pair< bool, bool > conf) const
 Return the spectator particle for the selected configuration.
 
Energy emitterScale (pair< bool, bool > conf) const
 Return the scale associated to the emitter for the selected configuration.
 
void emitterScale (pair< bool, bool > conf, Energy scale)
 Set the scale associated to the emitter for the selected configuration.
 
double emitterX (pair< bool, bool > conf) const
 Return the momentum fraction of the emitter for the selected configuration.
 
const PDFemitterPDF (pair< bool, bool > conf) const
 Return the PDF of the emitter for the selected configuration.
 
double spectatorX (pair< bool, bool > conf) const
 Return the momentum fraction of the spectator for the selected configuration.
 
const PDFspectatorPDF (pair< bool, bool > conf) const
 Return the PDF of the spectator for the selected configuration.
 
pair< Dipole, Dipolesplit (DipoleSplittingInfo &dsplit, bool colourSpectator) const
 Split this dipole according to the given splitting. More...
 
void tmpsplit (DipoleSplittingInfo &dsplit, bool colourSpectator) const
 As split, but without touching the event record. More...
 
void recoil (DipoleSplittingInfo &dsplit)
 Produce a new spectator according to the given splitting.
 
void print (ostream &) const
 Put information to ostream.
 

Private Attributes

pair< PPtr, PPtrtheParticles
 The particles forming the dipole.
 
pair< PDF, PDFthePDFs
 The PDF objects.
 
pair< double, double > theFractions
 The momentum fractions associated to the incoming particles.
 
pair< DipoleIndex, DipoleIndextheIndices
 The dipole indices, if the first or second particle is considered as emitter.
 
pair< Energy, Energy > theScales
 The scale associated to the first and second particle, respectively.
 
pair< bool, bool > theDecaying
 Indicates if either the first or the second parton is incoming to a decay.
 

Detailed Description

The Dipole class is used by the dipole shower to represent a dipole of two coloured partons.

Author
Simon Platzer, Stephen Webster, Johannes Bellm

Definition at line 30 of file Dipole.h.

Member Function Documentation

◆ split()

pair<Dipole,Dipole> Herwig::Dipole::split ( DipoleSplittingInfo dsplit,
bool  colourSpectator 
) const

Split this dipole according to the given splitting.

If colourSpectator is true, do not change the spectator.

◆ tmpsplit()

void Herwig::Dipole::tmpsplit ( DipoleSplittingInfo dsplit,
bool  colourSpectator 
) const

As split, but without touching the event record.

Needed to produce a phase space point as it would be after calling split.


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