include/EvtGenBase/EvtDecayAmp.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 *                                                                      *
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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 EVTDECAYAMP_HH
0022 #define EVTDECAYAMP_HH
0023
0024 #include "EvtGenBase/EvtAmp.hh"
0025 #include "EvtGenBase/EvtDecayBase.hh"
0026
0027 // Description: Baseclass for models that calculates amplitudes
0028
0029 class EvtDecayAmp : public EvtDecayBase {
0030   public:
0031     void makeDecay( EvtParticle* p, bool recursive = true ) override;
0032     inline void setWeight( double weight ) { _weight = weight; }
0033
0034     /**
0035   * sets the amplitudes calculated in the decay objects
0036   */
0037     void vertex( const EvtComplex& amp ) { _amp2.vertex( amp ); }
0038
0039     /**
0040   * sets the amplitudes calculated in the decay objects
0041   */
0042     void vertex( int i1, const EvtComplex& amp ) { _amp2.vertex( i1, amp ); }
0043
0044     /**
0045   * sets the amplitudes calculated in the decay objects
0046   */
0047     void vertex( int i1, int i2, const EvtComplex& amp )
0048     {
0049         _amp2.vertex( i1, i2, amp );
0050     }
0051
0052     /**
0053   * sets the amplitudes calculated in the decay objects
0054   */
0055     void vertex( int i1, int i2, int i3, const EvtComplex& amp )
0056     {
0057         _amp2.vertex( i1, i2, i3, amp );
0058     }
0059
0060     /**
0061   * sets the amplitudes calculated in the decay objects
0062   */
0063     void vertex( int* i1, const EvtComplex& amp ) { _amp2.vertex( i1, amp ); }
0064
0065     /**
0066    *  Provide access to the amplitude
0067    */
0068     const EvtAmp& amplitude() const { return _amp2; }
0069
0070     virtual ~EvtDecayAmp() {}
0071
0072   protected:
0073     EvtAmp _amp2;
0074
0075   private:
0076     double _weight;
0077 };
0078
0079 #endif