[u/mrichter/AliRoot.git] / TEvtGen / EvtGenBase / EvtBlattWeisskopf.hh

/*******************************************************************************
 * Project: BaBar detector at the SLAC PEP-II B-factory
 * Package: EvtGenBase
 *    File: $Id: EvtBlattWeisskopf.hh,v 1.2 2009-03-16 16:43:40 robbep Exp $
 *  Author: Alexei Dvoretskii, dvoretsk@slac.stanford.edu, 2001-2002
 *
 * Copyright (C) 2002 Caltech
 *******************************************************************************/

// Blatt-Weisskopf penetration form factor for a resonance R->AB.
// Taken from CLEO preprint 00-23 (hep-ex/0011065)

#ifndef EVT_BLATT_WEISSKOPF_HH
#define EVT_BLATT_WEISSKOPF_HH

class EvtBlattWeisskopf {


public:

  EvtBlattWeisskopf(int LL, double R, double p0);
  EvtBlattWeisskopf(const EvtBlattWeisskopf&);
  ~EvtBlattWeisskopf();

  double operator()(double p) const;

private:

  int    _LL;   // angular momentum of daughters
  double _radial;    // resonance radial parameter
  double _p0;

  double _F0;   // formula evaluated at _p0
  double compute(double p) const;

};

#endif
Commit	Line	Data
da0e9ce3	1	/*******************************************************************************
	2	* Project: BaBar detector at the SLAC PEP-II B-factory
	3	* Package: EvtGenBase
0ca57c2f	4	* File: $Id: EvtBlattWeisskopf.hh,v 1.2 2009-03-16 16:43:40 robbep Exp $
da0e9ce3	5	* Author: Alexei Dvoretskii, dvoretsk@slac.stanford.edu, 2001-2002
	6	*
	7	* Copyright (C) 2002 Caltech
	8	*******************************************************************************/
	9
	10	// Blatt-Weisskopf penetration form factor for a resonance R->AB.
	11	// Taken from CLEO preprint 00-23 (hep-ex/0011065)
	12
	13	#ifndef EVT_BLATT_WEISSKOPF_HH
	14	#define EVT_BLATT_WEISSKOPF_HH
	15
	16	class EvtBlattWeisskopf {
	17
	18
	19	public:
	20
	21	EvtBlattWeisskopf(int LL, double R, double p0);
	22	EvtBlattWeisskopf(const EvtBlattWeisskopf&);
	23	~EvtBlattWeisskopf();
	24
	25	double operator()(double p) const;
	26
	27	private:
	28
	29	int _LL; // angular momentum of daughters
	30	double _radial; // resonance radial parameter
	31	double _p0;
	32
	33	double _F0; // formula evaluated at _p0
	34	double compute(double p) const;
	35
	36	};
	37
	38	#endif
	39
	40