BesEvtGen-00-04-08/src/EvtGen/EvtGenModels/EvtSVVHelAmp.hh

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//--------------------------------------------------------------------------
//
// Environment:
//      This software is part of the EvtGen package developed jointly
//      for the BaBar and CLEO collaborations.  If you use all or part
//      of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//      Copyright (C) 1998      Caltech, UCSB
//
// Module: EvtGen/EvtSVVHelAmp.hh
//
// Description:
//
// Modification history:
//
//    DJL/RYD     August 11, 1998         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTSVVHELAMP_HH
#define EVTSVVHELAMP_HH
 
#include "EvtGenBase/EvtDecayAmp.hh"
 
//Class to handle decays of the form SCALAR -> VECTOR VECTOR
//according the the helicity amplitudes specified by the
//user.  There are 6 arguements, orders as amplitude then
//phase for H+, H0, and H-, in that order.
 
class EvtAmp;
class EvtParticle;
class EvtId;
 
class EvtSVVHelAmp:public  EvtDecayAmp  {
 
public:
 
  EvtSVVHelAmp() {}
  virtual ~EvtSVVHelAmp();
 
  void getName(std::string& name);
  EvtDecayBase* clone();
 
  void init();
  void initProbMax();
 
  void decay(EvtParticle *p); 
 
  static void SVVHel(EvtParticle *parent,EvtAmp& amp,EvtId n_v1,EvtId n_v2,
             const EvtComplex& hp, const EvtComplex& h0,
             const EvtComplex& hm);
 
};
 
#endif