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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4Vee2hadrons
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 12.08.2004
37 //
38 // Modifications: 14 July 2014 N. Chikuma revised interfaces
39 //
40
41 //
42 // Class Description: base class to compute partial cross sections
43 // of e+e- annihilation into hadrons and
44 // sample of final state in the centre mass frame
45
46 // -------------------------------------------------------------------
47 //
48 #ifndef G4Vee2hadrons_h
49 #define G4Vee2hadrons_h 1
50
51 #include <vector>
52 #include <CLHEP/Units/SystemOfUnits.h>
53
54 #include "globals.hh"
55 #include "G4ThreeVector.hh"
56 #include "G4eeCrossSections.hh"
57 #include "G4PhysicsLinearVector.hh"
58
59 class G4DynamicParticle;
60 class G4PhysicsVector;
61
62 class G4Vee2hadrons
63 {
64
65 public:
66
67 explicit G4Vee2hadrons(G4eeCrossSections* cr,
68 G4double vlowEnergy,
69 G4double vhighEnergy,
70 G4double vdelta) : cross(cr)
71 {
72 lowEnergy = vlowEnergy;
73 highEnergy = vhighEnergy;
74 delta = vdelta;
75 };
76
77 virtual ~G4Vee2hadrons() {};
78
79 virtual G4double PeakEnergy() const = 0;
80
81 virtual G4double ComputeCrossSection(G4double) const = 0;
82
83 G4PhysicsVector* PhysicsVector() const
84 {
85 G4int nbins = std::max(3, G4int((highEnergy - lowEnergy)/delta) );
86 G4PhysicsVector* pp = new G4PhysicsLinearVector(lowEnergy,highEnergy,nbins);
87 return pp;
88 };
89
90 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
91 G4double, const G4ThreeVector&) = 0;
92
93 G4double LowEnergy() const {return lowEnergy;};
94
95 G4double HighEnergy() const {return highEnergy;};
96
97 // hide assignment operator
98 G4Vee2hadrons & operator=(const G4Vee2hadrons &right) = delete;
99 G4Vee2hadrons(const G4Vee2hadrons&) = delete;
100
101 private:
102
103 // parameters of the table
104 G4double lowEnergy;
105 G4double highEnergy;
106 G4double delta;
107
108 protected:
109
110 G4eeCrossSections* cross; // class to compute cross section
111
112 };
113
114 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
115
116 #endif
117