include/EvtGenModels/EvtSVVHelAmp.hh

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 EVTSVVHELAMP_HH
0022 #define EVTSVVHELAMP_HH
0023
0024 #include "EvtGenBase/EvtDecayAmp.hh"
0025
0026 //Class to handle decays of the form SCALAR -> VECTOR VECTOR
0027 //according the the helicity amplitudes specified by the
0028 //user.  There are 6 arguements, orders as amplitude then
0029 //phase for H+, H0, and H-, in that order.
0030
0031 class EvtAmp;
0032 class EvtParticle;
0033 class EvtId;
0034
0035 class EvtSVVHelAmp : public EvtDecayAmp {
0036   public:
0037     std::string getName() override;
0038     EvtDecayBase* clone() override;
0039
0040     void init() override;
0041     void initProbMax() override;
0042
0043     void decay( EvtParticle* p ) override;
0044
0045     static void SVVHel( EvtParticle* parent, EvtAmp& amp, EvtId n_v1,
0046                         EvtId n_v2, const EvtComplex& hp, const EvtComplex& h0,
0047                         const EvtComplex& hm );
0048
0049     std::string getParamName( int i ) override;
0050     std::string getParamDefault( int i ) override;
0051 };
0052
0053 #endif