Modify decay tables for 2025 and 2026 charm baryon MCs

Author: fgrosa

MC/config/PWGHF/pythia8/decayer/force_hadronic_charmbaryon.cfg

@@ -9,17 +9,17 @@ Init:showChangedParticleData = on
 4132:onMode = off
 
 ## Xic decays
-### Ξc+ -> p K- π+ (35%)
-4232:oneChannel = 1 0.17500 0 2212 -321 211        ### Ξc+ -> p K- π+ 6.18e-3
-4232:addChannel = 1 0.17500 0 2212 -313            ### Ξc+ -> p antiK*0(892)
-### Ξc+ -> Ξ- π+ π+ (35%) (set the same as Ξc+ -> p K- π+)
-4232:addChannel = 1 0.35000 0 3312 211 211        ### Ξc+ -> Ξ- π+ π+ 2.86%
+### Ξc+ -> p K- π+ (30%)
+4232:oneChannel = 1 0.1500 0 2212 -321 211        ### Ξc+ -> p K- π+ 6.18e-3
+4232:addChannel = 1 0.1500 0 2212 -313            ### Ξc+ -> p antiK*0(892)
+### Ξc+ -> Ξ- π+ π+ (40%) (set the same as Ξc+ -> p K- π+)
+4232:addChannel = 1 0.4000 0 3312 211 211         ### Ξc+ -> Ξ- π+ π+ 2.86%
 ### Ξc+ -> p φ (10%)
 4232:addChannel = 1 0.10000 0 2212 333             ### Ξc+ -> p φ
 ### Ξc+ -> sigma+ π+ π- (10%)
-4232:addChannel = 1 0.12500 0 3222 -211 211        ### Ξc+ -> sigma+ π- π+ 1.37%
+4232:addChannel = 1 0.10000 0 3222 -211 211        ### Ξc+ -> sigma+ π- π+ 1.37%
 ### Ξc+ -> Ξ*0 π+ (10%)
-4232:addChannel = 1 0.12500 0 3324 211
+4232:addChannel = 1 0.10000 0 3324 211
 
 ### Ξc+ -> p K- π+
 4232:onIfMatch = 2212 321 211
@@ -49,8 +49,9 @@ Init:showChangedParticleData = on
 
 ## OmegaC decays
 ### add custom OmegaC decays absent in PYTHIA8 decay table
-4332:oneChannel = 1 0.5 0 3334 211
-4332:addChannel = 1 0.5 0 3312 211
+4332:oneChannel = 1 0.7 0 3334 211
+4332:addChannel = 1 0.1 0 3312 211
+4332:addChannel = 1 0.2 0 3334 321
 
 ### Omega_c -> Omega pi
 4332:onIfMatch = 3334 211
@@ -72,6 +73,9 @@ Init:showChangedParticleData = on
 # Omega_c()0 --> Xi- K- 2 pi+              0.625932203389831
 #   -> PDG Codes: 3312, -321, [2], 211
 
+### Omega_c -> Omega Kaon
+4332:onIfMatch = 3334 321
+
 ## Allow the decay of resonances in the decay chain
 ### K*0(892) -> K- π+
 313:onMode = off

MC/config/PWGHF/pythia8/decayer/force_hadronic_charmbaryon_trigger.cfg

@@ -0,0 +1,70 @@
+# Decay configuration taken from MC/config/PWGHF/pythia8/generator/pythia8_charmhadronic_with_decays_Mode2_pp_ref.cfg
+Init:showChangedParticleData = on
+4332:tau0 = 0.0803     # OmegaC
+4132:tau0 = 0.0455     # Xic0
+
+# switch off all decay channels
+4232:onMode = off
+4332:onMode = off
+4132:onMode = off
+
+## Xic decays
+### Ξc+ -> Ξ- π+ π+ (40%) (set the same as Ξc+ -> p K- π+)
+4232:oneChannel = 1 0.8000 0 3312 211 211         ### Ξc+ -> Ξ- π+ π+ 2.86%
+### Ξc+ -> Ξ*0 π+ (10%)
+4232:addChannel = 1 0.20000 0 3324 211
+
+### Ξc+ -> Ξ*0 π+, Ξ*0 -> Ξ- π+
+4232:onIfMatch = 3324 211
+### Ξc+ -> Ξ- π+ π+
+4232:onIfMatch = 3312 211 211
+
+## Xic0 decays
+### add Xic0 decays absent in PYTHIA8 decay table
+4132:oneChannel = 1 0.0143 0 3312 211               ### Xi_c()0 --> Xi- pi+ 0.01432524810113947
+
+### Xic0 -> Xi- pi+
+4132:onIfMatch = 3312 211
+# Matching Exclusive Decay Channels:
+# -------------------------------------------------------
+# Xi_c()0 --> Xi- pi+                      0.01432524810113947
+#   -> PDG Codes: 3312, 211
+# Xi_c()0 --> Xi- pi+ pi+ pi-              0.04775082700379833
+#   -> PDG Codes: 3312, 211, 211, -211
+
+## OmegaC decays
+### add custom OmegaC decays absent in PYTHIA8 decay table
+4332:oneChannel = 1 0.7 0 3334 211
+4332:addChannel = 1 0.1 0 3312 211
+4332:addChannel = 1 0.2 0 3334 321
+
+### Omega_c -> Omega pi
+4332:onIfMatch = 3334 211
+# Matching Exclusive Decay Channels:
+# -------------------------------------------------------
+# Omega_c()0 --> Omega- pi+                None
+#   -> PDG Codes: 3334, 211
+# Omega_c()0 --> Omega- pi+ pi0            1.79939678284182
+#   -> PDG Codes: 3334, 211, 111
+# Omega_c()0 --> Omega- pi- 2 pi+          0.30954954954955
+#   -> PDG Codes: 3334, -211, [2], 211
+
+### Omega_c -> Xi pi
+4332:onIfMatch = 3312 211
+# Matching Exclusive Decay Channels:
+# -------------------------------------------------------
+# Omega_c()0 --> Xi- Kbar0 pi+             2.12
+#   -> PDG Codes: 3312, -311, 211
+# Omega_c()0 --> Xi- K- 2 pi+              0.625932203389831
+#   -> PDG Codes: 3312, -321, [2], 211
+
+### Omega_c -> Omega Kaon
+4332:onIfMatch = 3334 321
+
+## Allow the decay of resonances in the decay chain
+### and Omega_c -> pi Xi -> pi pi Lambda -> pi pi pi p
+3312:onMode = off
+3312:onIfAll = 3122 -211
+### for Omega_c -> pi Omega -> pi K Lambda -> pi K pi p
+3334:onMode = off
+3334:onIfAll = 3122 -321