include/Geant4/G4VHadPhaseSpaceAlgorithm.hh

0001 //
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0025 //
0026 //
0027 // Abstract base class for multibody uniform phase space generators.
0028 // Subclasses implement a specific algorithm, such as Kopylov, GENBOD,
0029 // or Makoto's NBody.  Subclasses are used by G4HadDecayGenerator.
0030 //
0031 // Author:  Michael Kelsey (SLAC) <kelsey@slac.stanford.edu>
0032
0033 #ifndef G4VHadPhaseSpaceAlgorithm_HH
0034 #define G4VHadPhaseSpaceAlgorithm_HH 1
0035
0036 #include "globals.hh"
0037 #include "G4VHadDecayAlgorithm.hh"
0038 #include "G4LorentzVector.hh"
0039 #include "G4ThreeVector.hh"
0040 #include <vector>
0041 #include <iosfwd>
0042
0043 class G4VHadPhaseSpaceAlgorithm : public G4VHadDecayAlgorithm {
0044 public:
0045   G4VHadPhaseSpaceAlgorithm(const G4String& algName, G4int verbose=0)
0046     : G4VHadDecayAlgorithm(algName, verbose) {;}
0047   virtual ~G4VHadPhaseSpaceAlgorithm() {;}
0048
0049 protected:
0050   // Multi-body function remains pure-virtual from base class
0051
0052   // Two-body uniform distribution is common to all algorithms
0053   virtual void GenerateTwoBody(G4double initialMass,
0054                    const std::vector<G4double>& masses,
0055                    std::vector<G4LorentzVector>& finalState);
0056
0057   // Sample spherical distribution
0058   G4ThreeVector UniformVector(G4double mag=1.) const;
0059 };
0060
0061 #endif  /* G4VHadPhaseSpaceAlgorithm_HH */