00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 // 00030 // ---------------------------------------------------------------------- 00031 // GEANT 4 class implementation file 00032 // 00033 // History: first implementation, based on object model of 00034 // 4th April 1996, G.Cosmo 00035 // ********************************************************************** 00036 // New impelemenataion as an utility class M.Asai, 26 July 2004 00037 // ---------------------------------------------------------------------- 00038 00039 #include "G4AntiSigmaPlus.hh" 00040 #include "G4PhysicalConstants.hh" 00041 #include "G4SystemOfUnits.hh" 00042 #include "G4ParticleTable.hh" 00043 00044 #include "G4PhaseSpaceDecayChannel.hh" 00045 #include "G4DecayTable.hh" 00046 00047 // ###################################################################### 00048 // ### AntiSigmaPlus #### 00049 // ###################################################################### 00050 00051 G4AntiSigmaPlus* G4AntiSigmaPlus::theInstance = 0; 00052 00053 G4AntiSigmaPlus* G4AntiSigmaPlus::Definition() 00054 { 00055 if (theInstance !=0) return theInstance; 00056 const G4String name = "anti_sigma+"; 00057 // search in particle table] 00058 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable(); 00059 G4ParticleDefinition* anInstance = pTable->FindParticle(name); 00060 if (anInstance ==0) 00061 { 00062 // create particle 00063 // 00064 // Arguments for constructor are as follows 00065 // name mass width charge 00066 // 2*spin parity C-conjugation 00067 // 2*Isospin 2*Isospin3 G-parity 00068 // type lepton number baryon number PDG encoding 00069 // stable lifetime decay table 00070 // shortlived subType anti_encoding 00071 00072 anInstance = new G4ParticleDefinition( 00073 name, 1.18937*GeV, 8.209e-12*MeV, -1.*eplus, 00074 1, +1, 0, 00075 2, -2, 0, 00076 "baryon", 0, -1, -3222, 00077 false, 0.08018*ns, NULL, 00078 false, "sigma"); 00079 00080 // Magnetic Moment 00081 G4double mN = eplus*hbar_Planck/2./(proton_mass_c2 /c_squared); 00082 anInstance->SetPDGMagneticMoment( -2.458 * mN); 00083 00084 //create Decay Table 00085 G4DecayTable* table = new G4DecayTable(); 00086 00087 // create decay channels 00088 G4VDecayChannel** mode = new G4VDecayChannel*[2]; 00089 // anti_sigma+ -> anti_proton + pi0 00090 mode[0] = new G4PhaseSpaceDecayChannel("anti_sigma+",0.516,2,"anti_proton","pi0"); 00091 // anti_sigma+ -> anti_neutron + pi+ 00092 mode[1] = new G4PhaseSpaceDecayChannel("anti_sigma+",0.483,2,"anti_neutron","pi-"); 00093 00094 for (G4int index=0; index <2; index++ ) table->Insert(mode[index]); 00095 delete [] mode; 00096 00097 anInstance->SetDecayTable(table); 00098 } 00099 theInstance = reinterpret_cast<G4AntiSigmaPlus*>(anInstance); 00100 return theInstance; 00101 } 00102 00103 G4AntiSigmaPlus* G4AntiSigmaPlus::AntiSigmaPlusDefinition() 00104 { 00105 return Definition(); 00106 } 00107 00108 G4AntiSigmaPlus* G4AntiSigmaPlus::AntiSigmaPlus() 00109 { 00110 return Definition(); 00111 } 00112