Add new resonances

Author: Bong-Hwi Lim

Common/Constants/include/CommonConstants/PhysicsConstants.h

@@ -98,7 +98,10 @@ enum Pdg {
   kLambda1520_Py = 102134,
   kK1_1270_0 = 10313,
   kK1_1270Plus = 10323,
-  kCDeuteron = 2010010020
+  kCDeuteron = 2010010020,
+  kXi1820Minus = 123314,
+  kXi1820Zero = 123324,
+  kOmega2012Minus = 123334
 };
 
 /// \brief Declarations of masses for additional particles
@@ -170,6 +173,9 @@ constexpr double MassLambda1520_Py = 1.5195;
 constexpr double MassK1_1270_0 = 1.253;
 constexpr double MassK1_1270Plus = 1.272;
 constexpr double MassCDeuteron = 3.226;
+constexpr double MassXi1820Minus = 1.8234;
+constexpr double MassXi1820Zero = 1.8234;
+constexpr double MassOmega2012Minus = 2.0125;
 
 /// \brief Declarations of masses for particles in ROOT PDG_t
 constexpr double MassDown = 0.00467;

Common/Constants/include/CommonConstants/make_pdg_header.py

@@ -157,6 +157,9 @@ class Pdg(Enum):
     kK1_1270_0 = 10313
     kK1_1270Plus = 10323
     kCDeuteron = 2010010020
+    kXi1820Minus = 123314  # Xi(1820)-, not in ROOT/PYTHIA PDG_t (see O2DatabasePDG.h)
+    kXi1820Zero = 123324  # Xi(1820)0, not in ROOT/PYTHIA PDG_t (see O2DatabasePDG.h)
+    kOmega2012Minus = 123334  # Omega(2012)-, not in ROOT/PYTHIA PDG_t (see O2DatabasePDG.h)
 
 
 dbPdg = o2.O2DatabasePDG

DataFormats/simulation/include/SimulationDataFormat/O2DatabasePDG.h

@@ -584,6 +584,15 @@ inline void O2DatabasePDG::addALICEParticles(TDatabasePDG* db)
     db->AddParticle("Xi_0_Bar_1820", "Xi_0_Bar_1820", 1.8234, kFALSE, 0.024, 0, "Resonance", -ionCode);
   }
 
+  // Omega(2012)- -> Xi- K0S (see PDG code convention above for Xi(1820))
+  ionCode = 123334;
+  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);
+  }
+
   // Ps - hidden strange (s-sbar) pentaquarks
 
   ionCode = 9322134;