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0001 
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
0005 * This file is part of EvtGen.                                         *
0006 *                                                                      *
0007 * EvtGen is free software: you can redistribute it and/or modify       *
0008 * it under the terms of the GNU General Public License as published by *
0009 * the Free Software Foundation, either version 3 of the License, or    *
0010 * (at your option) any later version.                                  *
0011 *                                                                      *
0012 * EvtGen is distributed in the hope that it will be useful,            *
0013 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
0014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
0015 * GNU General Public License for more details.                         *
0016 *                                                                      *
0017 * You should have received a copy of the GNU General Public License    *
0018 * along with EvtGen.  If not, see <https://www.gnu.org/licenses/>.     *
0019 ***********************************************************************/
0020 
0021 #ifndef EVTSSDCP_HH
0022 #define EVTSSDCP_HH
0023 
0024 #include "EvtGenBase/EvtDecayAmp.hh"
0025 
0026 class EvtParticle;
0027 
0028 // Description: This module is part of the unification of simulation of CP violation in
0029 //              B decays. This model handles decays of the type B->SD where D is either
0030 //              a spin 0, 1, or 2 particle. See long writeup for more information.
0031 
0032 class EvtSSDCP : public EvtDecayAmp {
0033   public:
0034     std::string getName() override;
0035     EvtDecayBase* clone() override;
0036 
0037     void initProbMax() override;
0038     void init() override;
0039     void decay( EvtParticle* p ) override;
0040 
0041     std::string getParamName( int i ) override;
0042     std::string getParamDefault( int i ) override;
0043 
0044   private:
0045     //Arguments
0046 
0047     double _dm;
0048 
0049     double _dgog;
0050 
0051     EvtComplex _qoverp;
0052     EvtComplex _poverq;
0053     EvtComplex _z;    //FS CPTV parameter
0054 
0055     // FS commented next line becuse not used
0056     //  int _cp;
0057 
0058     EvtComplex _A_f;
0059     EvtComplex _Abar_f;
0060 
0061     EvtComplex _A_fbar;
0062     EvtComplex _Abar_fbar;
0063 
0064     //Derived quantities
0065 
0066     double _gamma;
0067     double _dgamma;
0068 
0069     bool _eigenstate;
0070 };
0071 
0072 #endif