MatchboxAmplitudeggttbar.h

// -*- C++ -*-
//
// MatchboxAmplitudeggttbar.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 Herwig_MatchboxAmplitudeggttbar_H
#define Herwig_MatchboxAmplitudeggttbar_H
//
// This is the declaration of the MatchboxAmplitudeggttbar class.
//
 
#include "Herwig/MatrixElement/Matchbox/Base/MatchboxAmplitude.h"
#include "Herwig/MatrixElement/Matchbox/Builtin/Amplitudes/MatchboxCurrents.h"
#include "MG_gg2ttx.h"
#include "HelAmps_sm.h"
 
namespace Herwig {
 
using namespace ThePEG;
 
class MatchboxAmplitudeggttbar: 
    public MatchboxAmplitude, public MatchboxCurrents {
 
public:
 
  MatchboxAmplitudeggttbar();
 
public:
 
  virtual bool canHandle(const PDVector&) const;
 
  virtual unsigned int orderInGs() const {return 2; }
 
  virtual unsigned int orderInGem() const { return 0; }
 
  virtual bool noCorrelations() const { return false; }  
 
  virtual bool haveOneLoop() const { return false; }
 
  virtual void prepareAmplitudes(Ptr<MatchboxMEBase>::tcptr);
 
  virtual Complex evaluate(size_t, const vector<int>&, Complex&);
 
  virtual Energy2 mu2() const { return lastSHat(); }
 
  virtual void flushCaches() {
    MatchboxCurrents::reset();
    MatchboxAmplitude::flushCaches();
  }
 
public:
 
  void persistentOutput(PersistentOStream & os) const;
 
  void persistentInput(PersistentIStream & is, int version);
 
  static void Init();
 
protected:
 
  virtual IBPtr clone() const;
 
  virtual IBPtr fullclone() const;
 
 
// If needed, insert declarations of virtual function defined in the
// InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
 
protected:
 
  virtual void doinit();
 
  virtual void doinitrun();
  
 
private:
 
  MatchboxAmplitudeggttbar & operator=(const MatchboxAmplitudeggttbar &) = delete;
 
  double mom0 [4];
  double mom1 [4];
  double mom2 [4];
  double mom3 [4];
 
  void setupParams(map<string, double> & MGParams);
 
  map<string,double>  MGParams_;
 
};
 
}
 
#endif /* Herwig_MatchboxAmplitudeggttbar_H */