include/EvtGenModels/EvtBtoXsll.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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0020
0021 #ifndef EVTBTOXSLL_HH
0022 #define EVTBTOXSLL_HH
0023
0024 #include "EvtGenBase/EvtDecayIncoherent.hh"
0025 #include "EvtGenBase/EvtParticle.hh"
0026
0027 #include "EvtGenModels/EvtBtoXsllUtil.hh"
0028
0029 #include <memory>
0030
0031 class EvtBtoXsllUtil;
0032
0033 // Description:
0034 // Class to generate inclusive non-resonant B -> Xs l+ l- decays.
0035 // Description: Routine to generate non-resonant B -> Xs l+ l- decays.
0036 // It generates a dilepton mass spectrum according to Kruger and Sehgal
0037 // and then generates the two lepton momenta accoring to Ali et al.
0038 // The resultant X_s particles may be decayed by JETSET.
0039
0040 class EvtBtoXsll : public EvtDecayIncoherent {
0041   public:
0042     std::string getName() override;
0043
0044     EvtDecayBase* clone() override;
0045
0046     void initProbMax() override;
0047
0048     void init() override;
0049
0050     void decay( EvtParticle* p ) override;
0051
0052   private:
0053     std::unique_ptr<EvtBtoXsllUtil> _calcprob;
0054     double _dGdsProbMax;
0055     double _dGdsdupProbMax;
0056     double _mb;
0057     double _ms;
0058     double _mq;
0059     double _pf;
0060     double _mxmin;
0061 };
0062
0063 #endif