[u/mrichter/AliRoot.git] / TEvtGen / EvtGen / EvtGenModels / EvtBcToNPi.hh

//--------------------------------------------------------------------------
//
// 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
Commit	Line	Data
0ca57c2f	1	//--------------------------------------------------------------------------
	2	//
	3	// Environment:
	4	// This software is part of the EvtGen package. If you use all or part
	5	// of it, please give an appropriate acknowledgement.
	6	//
	7	// Copyright Information: See EvtGen/COPYRIGHT
	8	//
	9	// Module: EvtGenModels/EvtBcToNPi.hh
	10	//
	11	// Description: General decay model for Bc -> V + npi and Bc -> P + npi
	12	//
	13	// Modification history:
	14	//
	15	// A.Berezhnoy, A.Likhoded, A.Luchinsky April 2011 Module created
	16	//
	17	//------------------------------------------------------------------------
	18
	19	#ifndef EvtBcToNPi_HH
	20	#define EvtBcToNPi_HH
	21
	22	#include "EvtGenBase/EvtParticle.hh"
	23	#include "EvtGenBase/EvtDecayAmp.hh"
	24	#include "EvtGenBase/EvtDecayBase.hh"
	25	#include "EvtGenBase/EvtComplex.hh"
	26	#include "EvtGenBase/EvtVector4R.hh"
	27
	28	#include <string>
	29
	30	class EvtBcToNPi: public EvtDecayAmp {
	31
	32	public:
	33
	34	EvtBcToNPi(bool printAuthorInfo = false);
	35	virtual ~EvtBcToNPi();
	36
	37	std::string getName();
	38
	39	EvtDecayBase* clone();
	40
	41	void initProbMax();
	42
	43	void init();
	44
	45	void decay(EvtParticle *p);
	46
	47	protected:
	48
	49	int nCall;
	50	double maxAmp2;
	51
	52	// Bc form factors
	53	double _maxProb;
	54	double FA0_N, FA0_c1, FA0_c2;
	55	double FAm_N, FAm_c1, FAm_c2;
	56	double FAp_N, FAp_c1, FAp_c2;
	57	double FV_N, FV_c1, FV_c2;
	58
	59	double Fp_N, Fp_c1, Fp_c2;
	60	double Fm_N, Fm_c1, Fm_c2;
	61
	62	// W -> pi... form factors
	63	double _beta;
	64	double _mRho;
65	double _gammaRho;
66	double _mRhopr;
67	double _gammaRhopr;
68	double _mA1;
69	double _gammaA1;
70
71	double _ee(double M, double m1, double m2);
72	double _pp(double M, double m1, double m2);
73	EvtComplex Fpi( EvtVector4R q1, EvtVector4R q2);
74	double pi3G(double m2,int dupD);
75
76	private:
77
78	void printAuthorInfo();
79
80	};
81
82	#endif
83