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EvtBcToNPi.hh
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EvtBcToNPi.hh
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//--------------------------------------------------------------------------
//
// Environment:
// This software is part of the EvtGen package. If you use all or part
// of it, please give an appropriate acknowledgement.
//
// Copyright Information: See EvtGen/COPYRIGHT
//
// Module: EvtGenModels/EvtBcToNPi.hh
//
// Description: General decay model for Bc -> V + npi and Bc -> P + npi
//
// Modification history:
//
// A.Berezhnoy, A.Likhoded, A.Luchinsky April 2011 Module created
//
//------------------------------------------------------------------------
#ifndef EvtBcToNPi_HH
#define EvtBcToNPi_HH
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtDecayAmp.hh"
#include "EvtGenBase/EvtDecayBase.hh"
#include "EvtGenBase/EvtComplex.hh"
#include "EvtGenBase/EvtVector4R.hh"
#include <string>
class EvtBcToNPi: public EvtDecayAmp {
public:
EvtBcToNPi(bool printAuthorInfo = false);
virtual ~EvtBcToNPi();
std::string getName();
EvtDecayBase* clone();
void initProbMax();
void init();
void decay(EvtParticle *p);
protected:
int nCall;
double maxAmp2;
// Bc form factors
double _maxProb;
double FA0_N, FA0_c1, FA0_c2;
double FAm_N, FAm_c1, FAm_c2;
double FAp_N, FAp_c1, FAp_c2;
double FV_N, FV_c1, FV_c2;
double Fp_N, Fp_c1, Fp_c2;
double Fm_N, Fm_c1, Fm_c2;
// W -> pi... form factors
double _beta;
double _mRho;
double _gammaRho;
double _mRhopr;
double _gammaRhopr;
double _mA1;
double _gammaA1;
double _ee(double M, double m1, double m2);
double _pp(double M, double m1, double m2);
EvtComplex Fpi( EvtVector4R q1, EvtVector4R q2);
double pi3G(double m2,int dupD);
private:
void printAuthorInfo();
};
#endif

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