EvtPropFlatte.hh

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#ifndef EVT_PROP_FLATTE_HH
#define EVT_PROP_FLATTE_HH
 
#include "EvtGenBase/EvtComplex.hh"
#include "EvtGenBase/EvtPropagator.hh"
 
// Flatte propagator: S.M.Flatte, Phys. Lett. B63, 224 (1976)
 
class EvtPropFlatte : public EvtPropagator {
  public:
    EvtPropFlatte( double m0, double g0, double m0a, double m0b, double g1,
                   double m1a, double m1b );
 
    EvtAmplitude<EvtPoint1D>* clone() const override;
 
  protected:
    EvtComplex amplitude( const EvtPoint1D& x ) const override;
 
    double m_m0a;
    double m_m0b;
 
    double m_g1;
    double m_m1a;
    double m_m1b;
};
 
#endif