include/EvtGenModels/EvtISGW2.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 EVTISGW2_HH
0022 #define EVTISGW2_HH
0023
0024 #include "EvtGenBase/EvtDecayAmp.hh"
0025 #include "EvtGenBase/EvtSemiLeptonicAmp.hh"
0026 #include "EvtGenBase/EvtSemiLeptonicFF.hh"
0027
0028 #include <memory>
0029 class EvtParticle;
0030
0031 // Description:Implementation of the ISGW2 model
0032 // Class to handle semileptonic decays using the ISGW2
0033 // model, as described in PRD 52 5 (1995) by
0034 // Isgur and Scora.  Electron, muon, and tau models
0035 // are available.  Form factors, q2 and lepton energy
0036 // spectra checked against code from Scora.
0037
0038 class EvtISGW2 : public EvtDecayAmp {
0039   public:
0040     std::string getName() override;
0041     EvtDecayBase* clone() override;
0042
0043     void decay( EvtParticle* p ) override;
0044     void initProbMax() override;
0045     void init() override;
0046
0047   private:
0048     std::unique_ptr<EvtSemiLeptonicFF> isgw2ffmodel;
0049     std::unique_ptr<EvtSemiLeptonicAmp> calcamp;
0050 };
0051
0052 #endif