include/EvtGenBase/EvtNonresonantAmp.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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0005 * This file is part of EvtGen.                                         *
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0020
0021 #ifndef EVT_NONRESONANT_AMP_HH
0022 #define EVT_NONRESONANT_AMP_HH
0023
0024 #include "EvtGenBase/EvtAmplitude.hh"
0025 #include "EvtGenBase/EvtCyclic3.hh"
0026 #include "EvtGenBase/EvtDalitzPlot.hh"
0027 #include "EvtGenBase/EvtDalitzPoint.hh"
0028 #include "EvtGenBase/EvtPto3PAmp.hh"
0029 #include "EvtGenBase/EvtSpinType.hh"
0030
0031 class EvtComplex;
0032
0033 class EvtNonresonantAmp : public EvtAmplitude<EvtDalitzPoint> {
0034   public:
0035     EvtNonresonantAmp( EvtDalitzPlot* dp, EvtPto3PAmp::NumType type,
0036                        EvtCyclic3::Pair pair1, double par1 = 0,
0037                        EvtCyclic3::Pair pair2 = EvtCyclic3::AB, double par2 = 0,
0038                        EvtSpinType::spintype spin = EvtSpinType::SCALAR );
0039
0040     EvtComplex amplitude( const EvtDalitzPoint& p ) const override;
0041
0042     EvtAmplitude<EvtDalitzPoint>* clone() const override
0043     {
0044         return new EvtNonresonantAmp( *this );
0045     }
0046
0047   private:
0048     EvtDalitzPlot* _dalitzSpace;
0049
0050     EvtPto3PAmp::NumType _type;
0051
0052     EvtCyclic3::Pair _pair1, _pair2;
0053
0054     double _par1, _par2;
0055
0056     EvtSpinType::spintype _spin;
0057 };
0058
0059 #endif