VBFNLOAmplitude.h

// -*- C++ -*-
//
// VBFNLOAmplitude.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_VBFNLOAmplitude_H
#define Herwig_VBFNLOAmplitude_H
//
// This is the declaration of the VBFNLOAmplitude class.
//
 
#include "Herwig/MatrixElement/Matchbox/Base/MatchboxOLPME.h"
 
namespace Herwig {
 
using namespace ThePEG;
 
class VBFNLOAmplitude: public MatchboxOLPME {
 
public:
 
  VBFNLOAmplitude();
 
  virtual ~VBFNLOAmplitude();
 
public:
 
  virtual bool hasInitialAverage() const { return false; }
 
  virtual bool hasFinalStateSymmetry() const { return false; }
 
  virtual bool isCS() const { return false; }
  virtual bool isExpanded() const { return true; }
  virtual bool isBDK() const { return false; }
  virtual bool isDR() const { return false; }
  virtual bool isDRbar() const { return false; }
 
  virtual int nDimAdditional() const { return theRanHelSum?1:0; }
 
  void setOLPParameter(const string& name, double value) const;
 
  virtual void signOLP(const string&, const string&);
 
  virtual void startOLP(const string&, int& status);
 
  virtual bool startOLP(const map<pair<Process,int>,int>& procs);
 
  virtual void evalSubProcess() const;
 
  virtual void evalColourCorrelator(pair<int,int> ij) const;
 
  virtual double largeNME2(Ptr<ColourBasis>::tptr) const;
 
  virtual void evalLargeNSubProcess(Ptr<ColourBasis>::tptr) const;
 
  virtual double largeNColourCorrelatedME2(pair<int,int>,
                                           Ptr<ColourBasis>::tptr) const;
 
  virtual void evalLargeNColourCorrelator(pair<int,int> ij,
                                          Ptr<ColourBasis>::tptr) const;
 
  virtual LorentzVector<Complex> plusPolarization(const Lorentz5Momentum& p,
                                                  const Lorentz5Momentum& n,
                                                  int id = -1) const;
 
  virtual void evalSpinColourCorrelator(pair<int,int> ij) const;
 
public:
 
  void persistentOutput(PersistentOStream & os) const;
 
  void persistentInput(PersistentIStream & is, int version);
 
  static void Init();
 
protected:
 
 
  virtual void doinit();
 
  virtual void doinitrun();
 
protected:
 
  virtual IBPtr clone() const;
 
  virtual IBPtr fullclone() const;
 
private:
 
  VBFNLOAmplitude & operator=(const VBFNLOAmplitude &) = delete;
 
  mutable vector<double> colourCorrelatorResults;
 
  mutable vector<double> spinColourCorrelatorResults;
 
  bool theRanHelSum;
 
  bool theAnomCoupl;
 
protected:
 
  string VBFNLOlib_;
 
  void loadVBFNLO();
 
};
 
}
 
#endif /* Herwig_VBFNLOAmplitude_H */