Geant4  10.03
G4VAnnihilationCollision.hh
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27 // $Id: G4VAnnihilationCollision.hh,v 1.3 2006-06-29 20:36:02 gunter Exp $ //
28 // -------------------------------------------------------------------
29 // GEANT4 Class file
30 //
31 // For information related to this code contact:
32 //
33 // File name: G4VElasticCollision
34 //
35 // Author: Maria Grazia Pia
36 //
37 // Creation date: 15 April 1999
38 //
39 // Modifications:
40 //
41 // -------------------------------------------------------------------
42 
43 #ifndef G4VANNIHILATIONCOLLISION_HH
44 #define G4VANNIHILATIONCOLLISION_HH
45 
46 #include "globals.hh"
47 #include "G4Log.hh"
48 #include "G4VCollision.hh"
49 #include "G4VCrossSectionSource.hh"
51 #include "G4KineticTrackVector.hh"
52 
53 class G4KineticTrack;
54 
55 
57 {
58 
59 public:
60 
62 
63  virtual ~G4VAnnihilationCollision();
64 
66  G4bool operator!=(const G4VAnnihilationCollision &right) const;
67 
68  virtual G4KineticTrackVector* FinalState(const G4KineticTrack& trk1,
69  const G4KineticTrack& trk2) const;
71  {
73  }
74 
75 protected:
76 
77  virtual const G4ParticleDefinition* GetOutgoingParticle(const G4KineticTrack& trk1,
78  const G4KineticTrack& trk2) const = 0;
79 
80 private:
81 
82  double BrWigInt0(const double x, const double gamma, const double m0) const
83  { return 2.0*gamma*std::atan( 2.0 * (x-m0)/ gamma ); }
84 
85  G4double BrWigInt1(const G4double x, const G4double gamma, const G4double m0) const
86  { return 0.5*gamma*gamma*G4Log( (x-m0)*(x-m0)+gamma*gamma/4.0 ) + m0*BrWigInt0(x,gamma,m0); }
87 
88  double BrWigInv(const double x, const double gamma, const double m0) const
89  { return 0.5*gamma*std::tan( 0.5*x/gamma )+m0; }
90 
91  double SampleResonanceMass(const double poleMass,
92  const double width,
93  const double minMass,
94  const double maxMass) const;
95 private:
96 
98 
99 };
100 
101 
102 
103 
104 #endif
virtual G4KineticTrackVector * FinalState(const G4KineticTrack &trk1, const G4KineticTrack &trk2) const
virtual const G4ParticleDefinition * GetOutgoingParticle(const G4KineticTrack &trk1, const G4KineticTrack &trk2) const =0
double BrWigInv(const double x, const double gamma, const double m0) const
virtual const G4VAngularDistribution * GetAngularDistribution() const
G4double BrWigInt1(const G4double x, const G4double gamma, const G4double m0) const
G4bool operator!=(const G4VAnnihilationCollision &right) const
#define width
double BrWigInt0(const double x, const double gamma, const double m0) const
bool G4bool
Definition: G4Types.hh:79
G4double G4Log(G4double x)
Definition: G4Log.hh:230
double SampleResonanceMass(const double poleMass, const double width, const double minMass, const double maxMass) const
G4VAngularDistribution * theAngularDistribution
double G4double
Definition: G4Types.hh:76
G4bool operator==(const G4VAnnihilationCollision &right) const