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1 //
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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 // Update mass and width following PDG 2023 S.Okada, 5 November 2023
34 // ----------------------------------------------------------------------
35
36 #include "G4SigmacPlus.hh"
37
38 #include "G4DecayTable.hh"
39 #include "G4ParticleTable.hh"
40 #include "G4PhaseSpaceDecayChannel.hh"
41 #include "G4String.hh"
42 #include "G4SystemOfUnits.hh"
43 #include "G4Types.hh"
44 #include "G4VDecayChannel.hh"
45
46 G4SigmacPlus* G4SigmacPlus::theInstance = nullptr;
47
48 G4SigmacPlus* G4SigmacPlus::Definition()
49 {
50 if (theInstance != nullptr) return theInstance;
51 const G4String name = "sigma_c+";
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, 2.45265*GeV, 2.3*MeV, +1.0*eplus,
69 1, +1, 0,
70 2, 0, 0,
71 "baryon", 0, +1, 4212,
72 false, 0.0*ns, nullptr,
73 false, "sigma_c");
74 // clang-format on
75
76 // create Decay Table
77 auto table = new G4DecayTable();
78
79 // create decay channels
80 auto mode = new G4VDecayChannel*[1];
81 // sigmac+ -> lambda_c + pi0
82 mode[0] = new G4PhaseSpaceDecayChannel("sigma_c+", 1.000, 2, "lambda_c+", "pi0");
83
84 for (G4int index = 0; index < 1; index++)
85 table->Insert(mode[index]);
86 delete[] mode;
87
88 anInstance->SetDecayTable(table);
89 }
90 theInstance = static_cast<G4SigmacPlus*>(anInstance);
91 return theInstance;
92 }
93
94 G4SigmacPlus* G4SigmacPlus::SigmacPlusDefinition()
95 {
96 return Definition();
97 }
98
99 G4SigmacPlus* G4SigmacPlus::SigmacPlus()
100 {
101 return Definition();
102 }
103