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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4MuonToMuonPairProductionModel
33 //
34 // Author: Siddharth Yajaman on the base of Vladimir Ivantchenko code
35 //
36 // Creation date: 12.07.2022
37 //
38 // Modifications:
39 //
40
41 //
42 // Class Description:
43 //
44 // Implementation of mu+mu- pair production by muons
45 // R. P. Kokoulin, S. R. Kelner, and A. A. Petrukhin,
46 // in Proceedings of the International Cosmic Ray Conference,
47 // Salt Lake City, 1999, edited by D. Kieda et al.
48 // (American Institute of Physics, Melville, NY, 2000), Vol. 2, p. 20
49 //
50 // It inherits from G4MuPairProductionModel
51 //
52 // -------------------------------------------------------------------
53 //
54
55 #ifndef G4MuonToMuonPairProductionModel_h
56 #define G4MuonToMuonPairProductionModel_h 1
57
58 #include "G4MuPairProductionModel.hh"
59 #include <vector>
60
61 class G4MuonToMuonPairProductionModel : public G4MuPairProductionModel
62 {
63 public:
64
65 explicit G4MuonToMuonPairProductionModel(const G4ParticleDefinition* p = nullptr,
66 const G4String& nam = "muToMuonPairProd");
67
68 ~G4MuonToMuonPairProductionModel() override = default;
69
70 // hide assignment operator and copy constructor
71 G4MuonToMuonPairProductionModel & operator=
72 (const G4MuonToMuonPairProductionModel &right) = delete;
73 G4MuonToMuonPairProductionModel(const G4MuonToMuonPairProductionModel&) = delete;
74
75 G4double
76 ComputeDMicroscopicCrossSection(G4double tkin, G4double Z,
77 G4double pairEnergy) override;
78
79 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
80 const G4MaterialCutsCouple*,
81 const G4DynamicParticle*,
82 G4double tmin,
83 G4double maxEnergy) override;
84
85 G4double U_func(G4double Z, G4double rho2, G4double xi,
86 G4double Y, G4double pairEnergy, const G4double B=183);
87
88 protected:
89
90 void DataCorrupted(G4int Z, G4double logTkin) const override;
91
92 G4ParticleDefinition* theMuonMinus = nullptr;
93 G4ParticleDefinition* theMuonPlus = nullptr;
94
95 G4double factorForCross;
96 G4double minPairEnergy;
97 G4double muonMass;
98 G4double mueRatio;
99 };
100
101 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
102
103 #endif
104