FFTVertex.h

// -*- C++ -*-
//
// FFTVertex.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 2003-2019 Peter Richardson, Leif Lonnblad
//
// ThePEG is licenced under version 3 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef ThePEG_FFTVertex_H
#define ThePEG_FFTVertex_H
//
// This is the declaration of the FFTVertex class.
//
#include "ThePEG/Helicity/Vertex/AbstractFFTVertex.h"
#include "ThePEG/Helicity/WaveFunction/SpinorWaveFunction.h"
#include "ThePEG/Helicity/WaveFunction/SpinorBarWaveFunction.h"
#include "ThePEG/Helicity/WaveFunction/TensorWaveFunction.h"
#include "FFTVertex.fh"

namespace ThePEG {
namespace Helicity {

class FFTVertex: public AbstractFFTVertex {
      
public:

  static void Init();

public:
  
  Complex evaluate(Energy2 q2,const SpinorWaveFunction & sp1,
                   const SpinorBarWaveFunction & sbar2, 
                   const TensorWaveFunction & ten3);

  TensorWaveFunction evaluate(Energy2 q2, int iopt,tcPDPtr out,
                              const SpinorWaveFunction & sp1,
                              const SpinorBarWaveFunction & sbar2,
                              complex<Energy> mass=-GeV, complex<Energy> width=-GeV);

  SpinorWaveFunction evaluate(Energy2 q2,int iopt,tcPDPtr out,
                              const SpinorWaveFunction & sp1,
                              const TensorWaveFunction & ten3,
                              complex<Energy> mass=-GeV, complex<Energy> width=-GeV);

  SpinorBarWaveFunction evaluate(Energy2 q2,int iopt, tcPDPtr out,
                                 const SpinorBarWaveFunction & sbar2,
                                 const TensorWaveFunction& ten3,
                                 complex<Energy> mass=-GeV, complex<Energy> width=-GeV);

  virtual void setCoupling(Energy2 q2,tcPDPtr part1,
                           tcPDPtr part2,tcPDPtr part3)=0;

  virtual void setCoupling(Energy2,tcPDPtr,tcPDPtr,tcPDPtr,tcPDPtr) {
    assert(false);
  }
  
private:
  
  FFTVertex & operator=(const FFTVertex &) = delete;
  
};

}

}
#endif /* ThePEG_FFTVertex_H */