EvtPropagator.hh

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#ifndef EVT_PROPAGATOR_HH
#define EVT_PROPAGATOR_HH
 
#include "EvtGenBase/EvtAmplitude.hh"
#include "EvtGenBase/EvtComplex.hh"
#include "EvtGenBase/EvtPoint1D.hh"
 
#include <assert.h>
 
// Defines propagator as a function of mass and width
 
class EvtPropagator : public EvtAmplitude<EvtPoint1D> {
  public:
    EvtPropagator( double m0, double g0 ) : m_m0( m0 ), m_g0( g0 )
    {
        assert( m0 > 0 );
        assert( g0 >= 0 );
    }
 
    // Accessors
 
    inline double m0() const { return m_m0; }
    inline double g0() const { return m_g0; }
 
    // Modifiers (can be useful e.g. for fitting!)
 
    inline void set_m0( double m0 )
    {
        assert( m0 > 0 );
        m_m0 = m0;
    }
    inline void set_g0( double g0 )
    {
        assert( g0 >= 0 );
        m_g0 = g0;
    }
 
  protected:
    double m_m0;
    double m_g0;
};
 
#endif