Geant4 Cross Reference

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Geant4/processes/hadronic/models/inclxx/incl_physics/include/G4INCLCrossSectionsTruncatedMultiPions.hh

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 25 //
 26 // INCL++ intra-nuclear cascade model
 27 // Alain Boudard, CEA-Saclay, France
 28 // Joseph Cugnon, University of Liege, Belgium
 29 // Jean-Christophe David, CEA-Saclay, France
 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
 31 // Sylvie Leray, CEA-Saclay, France
 32 // Davide Mancusi, CEA-Saclay, France
 33 //
 34 #define INCLXX_IN_GEANT4_MODE 1
 35 
 36 #include "globals.hh"
 37 
 38 /** \file G4INCLCrossSectionsTruncatedMultiPions.hh
 39  * \brief Truncated multipion cross sections
 40  *
 41  * \date 10th December 2014
 42  * \author Davide Mancusi
 43  */
 44 
 45 #ifndef G4INCLCROSSSECTIONSTRUNCATEDMULTIPIONS_HH
 46 #define G4INCLCROSSSECTIONSTRUNCATEDMULTIPIONS_HH
 47 
 48 #include "G4INCLCrossSectionsMultiPions.hh"
 49 #include <limits>
 50 
 51 namespace G4INCL {
 52   /// \brief Truncated multipion cross sections
 53 
 54   class CrossSectionsTruncatedMultiPions : public CrossSectionsMultiPions {
 55     public:
 56       CrossSectionsTruncatedMultiPions(const G4int nPi=std::numeric_limits<G4int>::max());
 57 
 58       /** \brief Elastic particle-particle cross section
 59        *
 60        * The elastic pi-N cross section is calculated by difference:
 61        *   elastic = total - inelastic(pion production) - delta,
 62        * but we need to use the unmodified piNToDelta cross section, or else we
 63        * will violate the cross-section sum.
 64        *
 65        * This modification is only necessary for piN collisions.
 66        */
 67       virtual G4double elastic(Particle const * const p1, Particle const * const p2);
 68 
 69       /// \brief Cross section for Delta production - piN Channel
 70       virtual G4double piNToDelta(Particle const * const p1, Particle const * const p2);
 71 
 72       /// \brief Cross section for X pion production - piN Channel
 73       virtual G4double piNToxPiN(const G4int xpi, Particle const * const p1, Particle const * const p2);
 74 
 75       /// \brief Cross section for X pion production - NN Channel
 76       virtual G4double NNToxPiNN(const G4int xpi, Particle const * const p1, Particle const * const p2);
 77 
 78     protected:
 79 
 80       /// \brief Maximum number of pions produced in TruncatedMultiPion collisions
 81       const G4int nMaxPi;
 82 
 83   };
 84 }
 85 
 86 #endif
 87