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00040 #include "G4TauMinus.hh"
00041 #include "G4PhysicalConstants.hh"
00042 #include "G4SystemOfUnits.hh"
00043 #include "G4ParticleTable.hh"
00044
00045 #include "G4PhaseSpaceDecayChannel.hh"
00046 #include "G4TauLeptonicDecayChannel.hh"
00047 #include "G4DecayTable.hh"
00048
00049
00050
00051
00052 G4TauMinus* G4TauMinus::theInstance = 0;
00053
00054 G4TauMinus* G4TauMinus::Definition()
00055 {
00056 if (theInstance !=0) return theInstance;
00057 const G4String name = "tau-";
00058
00059 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
00060 G4ParticleDefinition* anInstance = pTable->FindParticle(name);
00061 if (anInstance ==0)
00062 {
00063
00064
00065
00066
00067
00068
00069
00070
00071
00072 anInstance = new G4ParticleDefinition(
00073 name, 1.77682*GeV, 2.265e-9*MeV, -1.*eplus,
00074 1, 0, 0,
00075 0, 0, 0,
00076 "lepton", 1, 0, 15,
00077 false, 290.6e-6*ns, NULL,
00078 false, "tau"
00079 );
00080
00081
00082 G4double muB = -0.5*eplus*hbar_Planck/(1.77699*GeV/c_squared) ;
00083
00084 anInstance->SetPDGMagneticMoment( muB * 2. * 1.00116);
00085
00086
00087 G4DecayTable* table = new G4DecayTable();
00088
00089
00090 G4VDecayChannel* mode;
00091
00092 mode = new G4TauLeptonicDecayChannel("tau-",0.1736,"mu-");
00093 table->Insert(mode);
00094
00095 mode = new G4TauLeptonicDecayChannel("tau-",0.1784,"e-");
00096 table->Insert(mode);
00097
00098 mode = new G4PhaseSpaceDecayChannel("tau-",0.1106,2,"pi-","nu_tau");
00099 table->Insert(mode);
00100
00101 mode = new G4PhaseSpaceDecayChannel("tau-",0.2541,3,"pi0","pi-","nu_tau");
00102 table->Insert(mode);
00103
00104 mode = new G4PhaseSpaceDecayChannel();
00105 mode->SetParent("tau-");
00106 mode->SetBR(0.0917);
00107 mode->SetNumberOfDaughters(4);
00108 mode->SetDaughter(0,"pi0");
00109 mode->SetDaughter(1,"pi0");
00110 mode->SetDaughter(2,"pi-");
00111 mode->SetDaughter(3,"nu_tau");
00112 table->Insert(mode);
00113
00114 mode = new G4PhaseSpaceDecayChannel();
00115 mode->SetParent("tau-");
00116 mode->SetBR(0.0946);
00117 mode->SetNumberOfDaughters(4);
00118 mode->SetDaughter(0,"pi-");
00119 mode->SetDaughter(1,"pi-");
00120 mode->SetDaughter(2,"pi+");
00121 mode->SetDaughter(3,"nu_tau");
00122 table->Insert(mode);
00123
00124 anInstance->SetDecayTable(table);
00125 }
00126 theInstance = reinterpret_cast<G4TauMinus*>(anInstance);
00127 return theInstance;
00128 }
00129
00130 G4TauMinus* G4TauMinus::TauMinusDefinition()
00131 {
00132 return Definition();
00133 }
00134
00135 G4TauMinus* G4TauMinus::TauMinus()
00136 {
00137 return Definition();
00138 }
00139
00140