include/EvtGenBase/EvtMParticle.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 __EVTMPARTICLE_HH__
0022 #define __EVTMPARTICLE_HH__
0023
0024 #include "EvtGenBase/EvtMNode.hh"
0025
0026 class EvtMParticle : public EvtMNode {
0027   public:
0028     EvtMParticle( int label, const EvtId& id );
0029     ~EvtMParticle() {}
0030     EvtSpinAmp amplitude( const vector<EvtVector4R>& product ) const override;
0031     int getnchild() const override { return 0; }
0032
0033     EvtComplex line( const vector<EvtVector4R>& /*product*/ ) const override
0034     {
0035         return EvtComplex( 1.0, 0.0 );
0036     }
0037
0038     EvtMNode* duplicate() const override;
0039 };
0040
0041 #endif