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File indexing completed on 2024-05-02 05:09:38
0001 #ifndef FASTSIM_DECAYER_H 0002 #define FASTSIM_DECAYER_H 0003 0004 #include <memory> 0005 #include <vector> 0006 0007 /////////////////////////////////////////////// 0008 // Author: L. Vanelderen 0009 // Date: 13 May 2014 0010 // 0011 // Revision: Class structure modified to match SimplifiedGeometryPropagator 0012 // S. Kurz, 29 May 2017 0013 ////////////////////////////////////////////////////////// 0014 0015 namespace gen { 0016 class P8RndmEngine; 0017 typedef std::shared_ptr<P8RndmEngine> P8RndmEnginePtr; 0018 } // namespace gen 0019 0020 namespace CLHEP { 0021 class HepRandomEngine; 0022 } 0023 0024 namespace Pythia8 { 0025 class Pythia; 0026 } 0027 0028 namespace fastsim { 0029 class Particle; 0030 0031 //! Implementation of non-stable particle decays. 0032 /*! 0033 Inspired by method Pythia8Hadronizer::residualDecay() in GeneratorInterface/Pythia8Interface/src/Py8GunBase.cc 0034 */ 0035 class Decayer { 0036 public: 0037 //! Default Constructor. 0038 Decayer(); 0039 0040 //! Default destructor. 0041 ~Decayer(); 0042 0043 //! Decay particle using pythia. 0044 /*! 0045 \param particle The particle that should be decayed. 0046 \param secondaries The decay products. 0047 \param engine The Random Engine. 0048 */ 0049 void decay(const Particle& particle, 0050 std::vector<std::unique_ptr<Particle> >& secondaries, 0051 CLHEP::HepRandomEngine& engine) const; 0052 0053 private: 0054 std::unique_ptr<Pythia8::Pythia> pythia_; //!< Instance of pythia 0055 gen::P8RndmEnginePtr pythiaRandomEngine_; //!< Instance of pythia Random Engine 0056 }; 0057 } // namespace fastsim 0058 #endif
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