Align Omega(2012) PDG code between database and transport

This makes the Omega(2012) resonance use the same PDG code and mass
in O2DatabasePDG.h and in the Geant transport definition in
O2MCApplication.cxx, and registers its antiparticle via
AddAntiParticle instead of a duplicated AddParticle call.

- O2MCApplication.cxx used 3335/-3335 and mass 2.012, now 123334/-123334 and 2.0125 to match O2DatabasePDG.h.

Author: sawenzel

DataFormats/simulation/include/SimulationDataFormat/O2DatabasePDG.h

@@ -589,9 +589,7 @@ inline void O2DatabasePDG::addALICEParticles(TDatabasePDG* db)
   if (!db->GetParticle(ionCode)) {
     db->AddParticle("Omega_Minus_2012", "Omega_Minus_2012", 2.0125, kFALSE, 0.0064, -3, "Resonance", ionCode);
   }
-  if (!db->GetParticle(-ionCode)) {
-    db->AddParticle("Omega_Plus_2012", "Omega_Plus_2012", 2.0125, kFALSE, 0.0064, 3, "Resonance", -ionCode);
-  }
+  db->AddAntiParticle("Omega_Plus_2012", -ionCode);
 
   // Ps - hidden strange (s-sbar) pentaquarks
 

Steer/src/O2MCApplication.cxx

@@ -646,17 +646,17 @@ void addSpecialParticles()
     psratio[j] = 0.;
   }
 
-  TVirtualMC::GetMC()->DefineParticle(3335, "Omega2012", kPTHadron, 2.012, -1.0, 1.0285e-22, "Hadron", 0.0064, 3, -1, 0, 0, 0, 0, 0, 1, kTRUE);
+  TVirtualMC::GetMC()->DefineParticle(123334, "Omega_Minus_2012", kPTHadron, 2.0125, -1.0, 1.0285e-22, "Hadron", 0.0064, 3, -1, 0, 0, 0, 0, 0, 1, kTRUE);
   psmode[0][0] = 3312; // Xi-
   psmode[0][1] = 310;  // K0S
   psratio[0] = 100.;
-  TVirtualMC::GetMC()->SetDecayMode(3335, psratio, psmode);
+  TVirtualMC::GetMC()->SetDecayMode(123334, psratio, psmode);
 
-  TVirtualMC::GetMC()->DefineParticle(-3335, "AntiOmega2012", kPTHadron, 2.012, 1.0, 1.0285e-22, "Hadron", 0.0064, 3, 1, 0, 0, 0, 0, 0, -1, kTRUE);
+  TVirtualMC::GetMC()->DefineParticle(-123334, "Omega_Plus_2012", kPTHadron, 2.0125, 1.0, 1.0285e-22, "Hadron", 0.0064, 3, 1, 0, 0, 0, 0, 0, -1, kTRUE);
   psmode[0][0] = -3312; // anti-Xi+
   psmode[0][1] = 310;   // K0S
   psratio[0] = 100.;
-  TVirtualMC::GetMC()->SetDecayMode(-3335, psratio, psmode);
+  TVirtualMC::GetMC()->SetDecayMode(-123334, psratio, psmode);
 
   // d*(2380) - dibaryon resonance
   TVirtualMC::GetMC()->DefineParticle(900010020, "d*_2380", kPTHadron, 2.38, 1.0, 0.94e-23, "Ion", 0.07, 6, 1, 0, 0, 0, 0, 0, 2, kTRUE);