Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/particles/hadrons/barions/src/G4AntiSigmaMinus.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
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  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 // ----------------------------------------------------------------------
 27 //      GEANT 4 class implementation file
 28 //
 29 //      History: first implementation, based on object model of
 30 //      4th April 1996, G.Cosmo
 31 // **********************************************************************
 32 //  New impelemenataion as an utility class  M.Asai, 26 July 2004
 33 // ----------------------------------------------------------------------
 34 
 35 #include "G4AntiSigmaMinus.hh"
 36 
 37 #include "G4DecayTable.hh"
 38 #include "G4ParticleTable.hh"
 39 #include "G4PhaseSpaceDecayChannel.hh"
 40 #include "G4PhysicalConstants.hh"
 41 #include "G4String.hh"
 42 #include "G4SystemOfUnits.hh"
 43 #include "G4Types.hh"
 44 #include "G4VDecayChannel.hh"
 45 
 46 G4AntiSigmaMinus* G4AntiSigmaMinus::theInstance = nullptr;
 47 
 48 G4AntiSigmaMinus* G4AntiSigmaMinus::Definition()
 49 {
 50   if (theInstance != nullptr) return theInstance;
 51   const G4String name = "anti_sigma-";
 52   // search in particle table]
 53   G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
 54   G4ParticleDefinition* anInstance = pTable->FindParticle(name);
 55   if (anInstance == nullptr) {
 56     // create particle
 57     //
 58     //    Arguments for constructor are as follows
 59     //               name             mass          width         charge
 60     //             2*spin           parity  C-conjugation
 61     //          2*Isospin       2*Isospin3       G-parity
 62     //               type    lepton number  baryon number   PDG encoding
 63     //             stable         lifetime    decay table
 64     //             shortlived      subType    anti_encoding
 65 
 66     // clang-format off
 67     anInstance = new G4ParticleDefinition(
 68                  name,    1.197449*GeV,  4.45e-12*MeV,       eplus,
 69                     1,              +1,             0,
 70                     2,              +2,             0,
 71              "baryon",               0,            -1,       -3112,
 72                 false,       0.1479*ns,          nullptr,
 73                 false,       "sigma");
 74     // clang-format on
 75 
 76     // Magnetic Moment
 77     G4double mN = eplus * hbar_Planck / 2. / (proton_mass_c2 / c_squared);
 78     anInstance->SetPDGMagneticMoment(1.160 * mN);
 79 
 80     // create Decay Table
 81     auto table = new G4DecayTable();
 82 
 83     // create decay channels
 84     auto mode = new G4VDecayChannel*[1];
 85     // anti_sigma- -> anti_neutron + pi+
 86     mode[0] = new G4PhaseSpaceDecayChannel("anti_sigma-", 1.00, 2, "anti_neutron", "pi+");
 87 
 88     for (G4int index = 0; index < 1; index++)
 89       table->Insert(mode[index]);
 90     delete[] mode;
 91 
 92     anInstance->SetDecayTable(table);
 93   }
 94   theInstance = static_cast<G4AntiSigmaMinus*>(anInstance);
 95   return theInstance;
 96 }
 97 
 98 G4AntiSigmaMinus* G4AntiSigmaMinus::AntiSigmaMinusDefinition()
 99 {
100   return Definition();
101 }
102 
103 G4AntiSigmaMinus* G4AntiSigmaMinus::AntiSigmaMinus()
104 {
105   return Definition();
106 }
107