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G4AntiSigmaZero.cc
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27 // $Id: G4AntiSigmaZero.cc 79357 2014-02-25 10:06:54Z gcosmo $
28 //
29 //
30 // ----------------------------------------------------------------------
31 // GEANT 4 class implementation file
32 //
33 // History: first implementation, based on object model of
34 // 4th April 1996, G.Cosmo
35 // **********************************************************************
36 // New impelemenataion as an utility class M.Asai, 26 July 2004
37 // ----------------------------------------------------------------------
38 
39 #include "G4AntiSigmaZero.hh"
40 #include "G4SystemOfUnits.hh"
41 #include "G4PhysicalConstants.hh"
42 #include "G4ParticleTable.hh"
43 
45 #include "G4DecayTable.hh"
46 
47 // ######################################################################
48 // ### AntiSigmaZero ###
49 // ######################################################################
50 
52 
54 {
55  if (theInstance !=0) return theInstance;
56  const G4String name = "anti_sigma0";
57  // search in particle table]
59  G4ParticleDefinition* anInstance = pTable->FindParticle(name);
60  if (anInstance ==0)
61  {
62  // create particle
63  //
64  // Arguments for constructor are as follows
65  // name mass width charge
66  // 2*spin parity C-conjugation
67  // 2*Isospin 2*Isospin3 G-parity
68  // type lepton number baryon number PDG encoding
69  // stable lifetime decay table
70  // shortlived subType anti_encoding
71 
72  anInstance = new G4ParticleDefinition(
73  name, 1.192642*GeV, 8.9e-3*MeV, 0.0,
74  1, +1, 0,
75  2, 0, 0,
76  "baryon", 0, -1, -3212,
77  false, 7.4e-11*ns, NULL,
78  false, "sigma");
79 
80  // Life time is given from width
81  anInstance->SetPDGLifeTime( hbar_Planck/(anInstance->GetPDGWidth()) );
82 
83  //create Decay Table
84  G4DecayTable* table = new G4DecayTable();
85 
86  // create decay channels
87  // anti_sigma0 -> anti_lambda + gamma
88  G4VDecayChannel* mode = new G4PhaseSpaceDecayChannel("anti_sigma0",1.000,2,"anti_lambda","gamma");
89 
90  table->Insert(mode);
91 
92  anInstance->SetDecayTable(table);
93  }
94  theInstance = reinterpret_cast<G4AntiSigmaZero*>(anInstance);
95  return theInstance;
96 }
97 
99 {
100  return Definition();
101 }
102 
104 {
105  return Definition();
106 }
107 
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
const XML_Char * name
Definition: expat.h:151
G4double GetPDGWidth() const
static constexpr double hbar_Planck
static G4ParticleTable * GetParticleTable()
static constexpr double MeV
Definition: G4SIunits.hh:214
void SetDecayTable(G4DecayTable *aDecayTable)
static G4AntiSigmaZero * theInstance
void SetPDGLifeTime(G4double aLifeTime)
void Insert(G4VDecayChannel *aChannel)
Definition: G4DecayTable.cc:62
static G4AntiSigmaZero * Definition()
static G4AntiSigmaZero * AntiSigmaZero()
static G4AntiSigmaZero * AntiSigmaZeroDefinition()
static constexpr double GeV
Definition: G4SIunits.hh:217
#define ns
Definition: xmlparse.cc:614