PScalarVectorFermionsDecayer.h

// -*- C++ -*-
//
// PScalarVectorFermionsDecayer.h is a part of Herwig - A multi-purpose Monte Carlo event generator
// Copyright (C) 2002-2019 The Herwig Collaboration
//
// Herwig is licenced under version 3 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef THEPEG_PScalarVectorFermionsDecayer_H
#define THEPEG_PScalarVectorFermionsDecayer_H
//
// This is the declaration of the PScalarVectorFermionsDecayer class.
//
#include "Herwig/Decay/DecayIntegrator.h"
#include "Herwig/Decay/PhaseSpaceMode.h"
#include "ThePEG/Helicity/LorentzPolarizationVector.h"
#include "ThePEG/Helicity/LorentzSpinorBar.h"
 
namespace Herwig {
using namespace ThePEG;
 
class PScalarVectorFermionsDecayer: public DecayIntegrator {
 
public:
 
  PScalarVectorFermionsDecayer();
  
  virtual int modeNumber(bool & cc, tcPDPtr parent, 
                         const tPDVector & children) const;
 
  double me2(const int ichan,const Particle & part,
             const tPDVector & outgoing,
             const vector<Lorentz5Momentum> & momenta,
             MEOption meopt) const;
 
  virtual void constructSpinInfo(const Particle & part,
                                 ParticleVector outgoing) const;
 
  virtual WidthCalculatorBasePtr threeBodyMEIntegrator(const DecayMode & dm) const;
  
  virtual InvEnergy threeBodydGammads(const int imode, const Energy2 q2, 
                                      const Energy2 s,
                                      const Energy m1, const Energy m2, 
                                      const Energy m3) const;
 
  virtual void dataBaseOutput(ofstream & os,bool header) const;
 
public:
 
  void persistentOutput(PersistentOStream & os) const;
 
  void persistentInput(PersistentIStream & is, int version);
 
  static void Init();
 
protected:
 
  virtual IBPtr clone() const {return new_ptr(*this);}
 
  virtual IBPtr fullclone() const {return new_ptr(*this);}
 
protected:
 
  virtual void doinit();
 
  virtual void doinitrun();
 
private:
 
  PScalarVectorFermionsDecayer & operator=(const PScalarVectorFermionsDecayer &) = delete;
 
public:
 
  string setUpDecayMode(string arg);
 
private:
 
  vector<InvEnergy> coupling_;
 
  vector<int> incoming_;
 
  vector<pair<long,long> > outgoing_;
 
  vector<double> maxweight_;
 
  vector<int> includeVMD_;
 
  vector<int> VMDid_;
 
  vector<Energy> VMDmass_;
 
  vector<Energy> VMDwidth_;
  mutable RhoDMatrix rho_;
 
  mutable vector<Helicity::LorentzPolarizationVector> vectors_;
 
  mutable vector<Helicity::LorentzSpinor   <SqrtEnergy> > wave_;
 
  mutable vector<Helicity::LorentzSpinorBar<SqrtEnergy> > wavebar_;
};
 
}
 
 
#endif /* THEPEG_PScalarVectorFermionsDecayer_H */