include/EvtGenModels/EvtPhspFlatLifetime.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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0020
0021 #ifndef EVTPHSPFLATLIFETIME_HH
0022 #define EVTPHSPFLATLIFETIME_HH
0023
0024 #include "EvtGenBase/EvtDecayIncoherent.hh"
0025
0026 class EvtParticle;
0027
0028 // Description:
0029 //   Class to handle generic phase space decays not done
0030 //   in other decay models, with a flat lifetime
0031
0032 class EvtPhspFlatLifetime : public EvtDecayIncoherent {
0033   public:
0034     /// Constructor
0035     EvtPhspFlatLifetime() : m_maxLifetime( 0. ){};
0036
0037     /// Destructor
0038     virtual ~EvtPhspFlatLifetime(){};
0039
0040     /// return name of the model
0041     std::string getName() override;
0042
0043     /// Clone
0044     EvtDecayBase* clone() override;
0045
0046     /// Compute maximum weight
0047     void initProbMax() override;
0048
0049     /// Initialize the model
0050     void init() override;
0051
0052     /// Perform the decay
0053     void decay( EvtParticle* p ) override;
0054
0055   private:
0056     /// parameter of the model: maximum of the generated lifetime (in ps)
0057     double m_maxLifetime;
0058 };
0059
0060 #endif