EvtCalHelAmp.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/EvtPhsp.hh
//
// Description:
// Class to handle generic phase space decays not done
// in other decay models.
//
// Modification history:
//
//    DJL/RYD     August 11, 1998         Module created
//
//------------------------------------------------------------------------
 
#ifndef EVTCALHELAMP_HH
#define EVTCALHELAMP_HH
 
#include "../EvtGenBase/EvtBlattWeisskopf.hh"
#include "../EvtGenBase/EvtDecayIncoherent.hh"
 
#include <fstream>
#include <iostream>
#include <math.h>
#include <sstream>
#include <stdlib.h>
#include <string.h>
#include <vector>
 
using namespace std;
class EvtParticle;
 
class EvtCalHelAmp : public EvtDecayIncoherent {
 
public:
  EvtCalHelAmp() {}
  virtual ~EvtCalHelAmp();
 
  void getName( std::string& name );
 
  EvtDecayBase* clone();
 
  void initProbMax();
 
  void                init();
  void                decay( EvtParticle* p );
  std::vector<double> firstder( std::vector<double> vh );
  static double       _H2, _H1, _H0, _H2err, _H1err, _H0err;
  static int          nevt;
  double              getBlattRatio( int L, double R, double pmag, double pmag0 );
  double              blattfactor( int L, double R, double pmag );
  double              phsp( double m0, double m1, double m2 );
 
private:
  vector<vector<double>> VC;
  int                    nd;
  int                    flag;
};
 
#endif