FFTVertex.h

// -*- C++ -*-
//
// FFTVertex.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 2003-2007 Peter Richardson, Leif Lonnblad
//
// ThePEG is licenced under version 2 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,
                              Energy mass=-GeV, Energy width=-GeV);

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

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

  virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3)=0;
  
private:
  
  static AbstractNoPIOClassDescription<FFTVertex> initFFTVertex;
  
  FFTVertex & operator=(const FFTVertex &);
  
};

}

template <>
struct BaseClassTrait<ThePEG::Helicity::FFTVertex,1> {
  typedef ThePEG::Helicity::AbstractFFTVertex NthBase;
};

template <>
struct ClassTraits<ThePEG::Helicity::FFTVertex>
  : public ClassTraitsBase<ThePEG::Helicity::FFTVertex> {
  
  static string className() { return "ThePEG::FFTVertex"; }
 
};
  
}

#endif /* ThePEG_FFTVertex_H */

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