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Herwig  7.2.1
IIqgxDipole.h
1 // -*- C++ -*-
2 //
3 // IIqgxDipole.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_IIqgxDipole_H
10 #define HERWIG_IIqgxDipole_H
11 //
12 // This is the declaration of the IIqgxDipole class.
13 //
14 
15 #include "Herwig/MatrixElement/Matchbox/Dipoles/SubtractionDipole.h"
16 
17 namespace Herwig {
18 
19 using namespace ThePEG;
20 
29 
30 public:
31 
37  IIqgxDipole();
38 
42  virtual ~IIqgxDipole();
44 
45 public:
46 
51  virtual bool canHandleEmitter(const cPDVector& partons, int emitter) const {
52  return emitter < 2 && abs(partons[emitter]->id()) < 7;
53  }
54 
59  virtual bool canHandleSplitting(const cPDVector& partons, int emitter, int emission) const {
60  return canHandleEmitter(partons,emitter) && partons[emission]->id() == ParticleID::g;
61  }
62 
67  virtual bool canHandleSpectator(const cPDVector& partons, int spectator) const {
68  return spectator < 2 && partons[spectator]->coloured();
69  }
70 
75  virtual bool canHandle(const cPDVector& partons,
76  int emitter, int emission, int spectator) const;
77 
86  virtual int samplingZ() const {return 4;}
87 
93  virtual double me2() const;
94 
98  virtual double me2Avg(double ccme2) const;
99 
100 public:
101 
108  void persistentOutput(PersistentOStream & os) const;
109 
115  void persistentInput(PersistentIStream & is, int version);
117 
124  static void Init();
125 
126 protected:
127 
134  virtual IBPtr clone() const;
135 
140  virtual IBPtr fullclone() const;
142 
143 
144 // If needed, insert declarations of virtual function defined in the
145 // InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
146 
147 
148 private:
149 
154  IIqgxDipole & operator=(const IIqgxDipole &) = delete;
155 
156 };
157 
158 }
159 
160 #endif /* HERWIG_IIqgxDipole_H */
ThePEG::Ptr< InterfacedBase >::pointer IBPtr
virtual bool canHandleEmitter(const cPDVector &partons, int emitter) const
Return true, if this dipole can possibly handle the indicated emitter.
Definition: IIqgxDipole.h:51
virtual int samplingZ() const
How to sample the z-distribution.
Definition: IIqgxDipole.h:86
virtual bool canHandleSplitting(const cPDVector &partons, int emitter, int emission) const
Return true, if this dipole can possibly handle the indicated splitting.
Definition: IIqgxDipole.h:59
virtual bool canHandleSpectator(const cPDVector &partons, int spectator) const
Return true, if this dipole can possibly handle the indicated spectator.
Definition: IIqgxDipole.h:67
vector< cPDPtr > cPDVector
SubtractionDipole represents a dipole subtraction term in the formalism of Catani and Seymour...
-*- C++ -*-
IIqgxDipole implements the D^{q,g;b} subtraction dipole.
Definition: IIqgxDipole.h:28