+++ /dev/null
-//--------------------------------------------------------------------------
-//
-// 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/EvtResonance2.hh
-//
-// Description:resonance-defining class
-//
-// Modification history:
-//
-// lange Nov 21, 2000 Module created
-//
-//------------------------------------------------------------------------
-
-#ifndef EVTRESONANCE2_HH
-#define EVTRESONANCE2_HH
-
-#include "EvtGenBase/EvtVector4R.hh"
-
-class EvtComplex;
-
-
-
-class EvtResonance2 {
-public:
-
- //operator
- EvtResonance2& operator = (const EvtResonance2 &);
-
- //constructor with all information about the resonance
- // invmass_angdenom chooses whether to use the resonance mass (false)
- // or the daughter invariant mass (true) for the denominators in
- // angular distributions
-
- EvtResonance2(const EvtVector4R& p4_p, const EvtVector4R& p4_d1,
- const EvtVector4R& p4_d2,
- double ampl = 0.0, double theta = 0.0, double gamma = 0.0,
- double bwm = 0.0, int spin = 0, bool invmass_angdenom = false);
-
- //destructor
- virtual ~EvtResonance2();
-
- //accessors
- //return 4-momenta of the particles involved
- inline const EvtVector4R& p4_p() { return _p4_p; }
- inline const EvtVector4R& p4_d1() { return _p4_d1; }
- inline const EvtVector4R& p4_d2() { return _p4_d2; }
-
-
- //return amplitude
- inline double amplitude() { return _ampl; }
-
- //return theta
- inline double theta() { return _theta; }
-
- //return gamma
- inline double gamma() { return _gamma; }
-
- //return bwm
- inline double bwm() { return _bwm; }
-
- //return spin
- inline int spin() { return _spin; }
-
- //calculate amplitude for this resonance
- EvtComplex resAmpl();
-
- private:
-
- EvtVector4R _p4_p, _p4_d1, _p4_d2;
- double _ampl, _theta, _gamma, _bwm;
- int _spin;
- bool _invmass_angdenom;
-
-};
-
-#endif
-