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Herwig 7.3.0
FFMsqgxDipole.h
1// -*- C++ -*-
2//
3// FFMsqgxDipole.h is a part of Herwig - A multi-purpose Monte Carlo event generator
4// Copyright (C) 2002-2019 The Herwig Collaboration
5//
6// Herwig is licenced under version 3 of the GPL, see COPYING for details.
7// Please respect the MCnet academic guidelines, see GUIDELINES for details.
8//
9#ifndef HERWIG_FFMsqgxDipole_H
10#define HERWIG_FFMsqgxDipole_H
11//
12// This is the declaration of the FFMsqgxDipole class.
13//
14
15#include "Herwig/MatrixElement/Matchbox/Dipoles/SubtractionDipole.h"
16
17namespace Herwig {
18
19using namespace ThePEG;
20
29
30public:
31
36
37public:
38
43 virtual bool canHandleEmitter(const cPDVector& partons, int emitter) const {
44 return
45 emitter > 1 &&
46 (abs(abs(partons[emitter]->id()) - 1000000) < 7 || abs(abs(partons[emitter]->id()) - 2000000) < 7);
47 }
48
53 virtual bool canHandleSplitting(const cPDVector& partons, int emitter, int emission) const {
54 return
55 canHandleEmitter(partons,emitter) &&
56 partons[emission]->id() == ParticleID::g;
57 }
58
63 virtual bool canHandleSpectator(const cPDVector& partons, int spectator) const {
64 return spectator > 1 && partons[spectator]->coloured();
65 }
66
71 virtual bool canHandle(const cPDVector& partons,
72 int emitter, int emission, int spectator) const;
73
82 virtual int samplingZ() const {return 3;}
83
89 virtual double me2() const;
90
94 virtual double me2Avg(double ccme2) const;
95
96public:
97
105
111 void persistentInput(PersistentIStream & is, int version);
113
120 static void Init();
121
122protected:
123
130 virtual IBPtr clone() const;
131
136 virtual IBPtr fullclone() const;
138
139
140// If needed, insert declarations of virtual function defined in the
141// InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
142
143
144private:
145
151
152};
153
154}
155
156#endif /* HERWIG_FFMsqgxDipole_H */
FFMsqgxDipole implements the D_{sq,g;k} subtraction dipole.
Definition: FFMsqgxDipole.h:28
virtual bool canHandle(const cPDVector &partons, int emitter, int emission, int spectator) const
Return true, if this dipole applies to the selected configuration.
virtual bool canHandleSplitting(const cPDVector &partons, int emitter, int emission) const
Return true, if this dipole can possibly handle the indicated splitting.
Definition: FFMsqgxDipole.h:53
virtual IBPtr fullclone() const
Make a clone of this object, possibly modifying the cloned object to make it sane.
virtual int samplingZ() const
How to sample the z-distribution.
Definition: FFMsqgxDipole.h:82
virtual IBPtr clone() const
Make a simple clone of this object.
virtual double me2() const
Return the matrix element for the kinematical configuation previously provided by the last call to se...
virtual bool canHandleSpectator(const cPDVector &partons, int spectator) const
Return true, if this dipole can possibly handle the indicated spectator.
Definition: FFMsqgxDipole.h:63
void persistentOutput(PersistentOStream &os) const
Function used to write out object persistently.
virtual double me2Avg(double ccme2) const
Return the matrix element averaged over spin correlations.
FFMsqgxDipole()
The default constructor.
static void Init()
The standard Init function used to initialize the interfaces.
void persistentInput(PersistentIStream &is, int version)
Function used to read in object persistently.
virtual bool canHandleEmitter(const cPDVector &partons, int emitter) const
Return true, if this dipole can possibly handle the indicated emitter.
Definition: FFMsqgxDipole.h:43
FFMsqgxDipole & operator=(const FFMsqgxDipole &)=delete
The assignment operator is private and must never be called.
SubtractionDipole represents a dipole subtraction term in the formalism of Catani and Seymour.
static int emission(const RealEmissionKey &key)
Return the emission id of a real emission key.
static int emitter(const RealEmissionKey &key)
Return the emitter id of a real emission key.
static int spectator(const RealEmissionKey &key)
Return the spectator id of a real emission key.
-*- C++ -*-
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
vector< cPDPtr > cPDVector