include/EvtGenModels/EvtPi0Dalitz.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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0020
0021 #ifndef EVTPI0DALITZ_HH
0022 #define EVTPI0DALITZ_HH
0023
0024 #include "EvtGenBase/EvtDecayProb.hh"
0025
0026 class EvtParticle;
0027
0028 class EvtPi0Dalitz : public EvtDecayProb {
0029   public:
0030     std::string getName() override;
0031     EvtDecayBase* clone() override;
0032
0033     void init() override;
0034     void initProbMax() override;
0035
0036     void decay( EvtParticle* p ) override;
0037
0038   private:
0039     double m_poleSize{ 0.00000002 };
0040
0041     // Following are rho mass and width, but in order to keep consistency
0042     // with what was done before do not use data from particle table.
0043     const double m_m0Sq{ 0.768 * 0.768 };
0044     const double m_m0SqG0Sq{ m_m0Sq * 0.151 * 0.151 };
0045 };
0046
0047 #endif