include/EvtGenBase/EvtFlatLineShape.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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0007 * EvtGen is free software: you can redistribute it and/or modify       *
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0019 ***********************************************************************/
0020
0021 #ifndef EVTFLATLINESHAPE_HH
0022 #define EVTFLATLINESHAPE_HH
0023
0024 #include "EvtGenBase/EvtAbsLineShape.hh"
0025
0026 class EvtFlatLineShape : public EvtAbsLineShape {
0027   public:
0028     EvtFlatLineShape() = default;
0029     EvtFlatLineShape( double mass, double width, double maxRange,
0030                       EvtSpinType::spintype sp );
0031     //figure the m1 and l on the fly
0032     //                 double mDaug1, double mDaug2, int l);
0033     EvtFlatLineShape& operator=( const EvtFlatLineShape& x );
0034     EvtFlatLineShape( const EvtFlatLineShape& x );
0035
0036     EvtAbsLineShape* clone() override;
0037
0038     double getMassProb( double mass, double massPar, int nDaug,
0039                         double* massDau ) override;
0040     // othDaugId is the other daughter of the parent in the case of a two body decay (only!)
0041     // ie B->rho K rho->pipi, othDaugId = K
0042     double getRandMass( EvtId* parId, int nDaug, EvtId* dauId, EvtId* othDaugId,
0043                         double maxMass, double* dauMasses ) override;
0044 };
0045
0046 #endif