include/EvtGenBase/EvtPropGounarisSakurai.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
0005 * This file is part of EvtGen.                                         *
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0020
0021 #ifndef EVT_PROP_GOUNARIS_SAKURAI_HH
0022 #define EVT_PROP_GOUNARIS_SAKURAI_HH
0023
0024 #include "EvtGenBase/EvtComplex.hh"
0025 #include "EvtGenBase/EvtCyclic3.hh"
0026 #include "EvtGenBase/EvtDalitzPlot.hh"
0027 #include "EvtGenBase/EvtDalitzPoint.hh"
0028 #include "EvtGenBase/EvtPropagator.hh"
0029
0030 class EvtPropGounarisSakurai : public EvtPropagator {
0031   public:
0032     EvtPropGounarisSakurai( EvtDalitzPlot* dp, EvtCyclic3::Pair pair, double m0,
0033                             double g0 );
0034
0035     EvtAmplitude<EvtPoint1D>* clone() const override;
0036
0037   protected:
0038     EvtComplex amplitude( const EvtPoint1D& x ) const override;
0039
0040   private:
0041     EvtDalitzPlot* _dalitzSpace;
0042
0043     EvtCyclic3::Pair _pair;
0044     double _gbase;
0045     double _m1;
0046     double _m2;
0047     double _dfun;
0048     double dFun( double s ) const;
0049     double dh_dsFun( double s ) const;
0050     double hFun( double s ) const;
0051     double kFun( double s ) const;
0052     double fsFun( double s ) const;
0053 };
0054
0055 #endif