[PWGHF] Configuration for charm-baryon enriched MC anchored to pp ref…

… run (#1843)

* pp ref eCM

* pp ref eCM

---------

Co-authored-by: Krista Lizbeth Smith <[email protected]>

MC/config/PWGHF/ini/GeneratorHF_D2H_ccbar_and_bbbar_gap5_Mode2_CharmBaryons_pp_ref.ini

@@ -0,0 +1,8 @@
+### The external generator derives from GeneratorPythia8.
+[GeneratorExternal]
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/external/generator/generator_pythia8_gaptriggered_hf.C
+funcName=GeneratorPythia8GapTriggeredCharmAndBeauty(5, -1.5, 1.5, -1.5, 1.5, {4132, 4332, 4232})
+
+[GeneratorPythia8]
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGHF/pythia8/generator/pythia8_charmhadronic_with_decays_Mode2_pp_ref.cfg
+includePartonEvent=true

MC/config/PWGHF/pythia8/generator/pythia8_charmhadronic_with_decays_Mode2_pp_ref.cfg

@@ -0,0 +1,148 @@
+### authors: Fabrizio Grosa ([email protected])
+###          Cristina Terrevoli ([email protected])
+###          Fabio Catalano ([email protected])
+### last update:  November 2023
+
+### beams
+Beams:idA 2212			# proton
+Beams:idB 2212 			# proton
+Beams:eCM 5360. 		# GeV
+
+### processes
+SoftQCD:inelastic on		# all inelastic processes
+
+### decays
+ParticleDecays:limitTau0 on	
+ParticleDecays:tau0Max 10.
+
+### switching on Pythia Mode2
+ColourReconnection:mode 1
+ColourReconnection:allowDoubleJunRem off
+ColourReconnection:m0 0.3
+ColourReconnection:allowJunctions on
+ColourReconnection:junctionCorrection 1.20
+ColourReconnection:timeDilationMode 2
+ColourReconnection:timeDilationPar 0.18
+StringPT:sigma 0.335
+StringZ:aLund 0.36
+StringZ:bLund 0.56
+StringFlav:probQQtoQ 0.078
+StringFlav:ProbStoUD 0.2
+StringFlav:probQQ1toQQ0join 0.0275,0.0275,0.0275,0.0275
+MultiPartonInteractions:pT0Ref 2.15
+BeamRemnants:remnantMode 1
+BeamRemnants:saturation 5
+
+# Correct decay lengths (wrong in PYTHIA8 decay table)
+# Lb
+5122:tau0 = 0.4390
+# Xic0
+4132:tau0 = 0.0455
+# OmegaC
+4332:tau0 = 0.0803
+
+### Force golden charm hadrons decay modes for D2H studies
+### add D0 decays absent in PYTHIA8 decay table and set BRs from PDG for other
+421:oneChannel = 1 0.0389 0 -321 211
+421:addChannel = 1 0.00389 0 -321 211 111
+### add D+ decays absent in PYTHIA8 decay table and set BRs from PDG for other
+411:oneChannel = 1 0.0752 0 -321 211 211
+411:addChannel = 1 0.0104 0 -313 211
+411:addChannel = 1 0.0156 0 311 211
+411:addChannel = 1 0.0752 0 333 211 # to have the same amount of D+->KKpi and D+->Kpipi
+## add Lc decays absent in PYTHIA8 decay table and set BRs from PDG for other
+4122:oneChannel = 1 0.0196 100 2212 -313
+4122:addChannel = 1 0.0108 100 2224 -321
+4122:addChannel = 1 0.022 100 102134 211
+4122:addChannel = 1 0.035 0 2212 -321 211
+4122:addChannel = 1 0.0159 0 2212 311
+### add Xic+ decays absent in PYTHIA8 decay table
+4232:addChannel = 1 0.2 0 2212 -313
+4232:addChannel = 1 0.2 0 2212 -321 211
+4232:addChannel = 1 0.2 0 3324 211
+4232:addChannel = 1 0.2 0 3312 211 211
+### add Xic0 decays absent in PYTHIA8 decay table
+4132:addChannel = 1 0.0143 0 3312 211
+### add OmegaC decays absent in PYTHIA8 decay table
+4332:addChannel = 1 0.5 0 3334 211
+4332:addChannel = 1 0.5 0 3312 211
+
+### K* -> K pi
+313:onMode = off
+313:onIfAll = 321 211
+### for Ds -> Phi pi+
+333:onMode = off
+333:onIfAll = 321 321
+### for D0 -> rho0 pi+ k-
+113:onMode = off
+113:onIfAll = 211 211
+### for Lambda_c -> Delta++ K-
+2224:onMode = off
+2224:onIfAll = 2212 211
+### for Lambda_c -> Lambda(1520) K-
+102134:onMode = off
+102134:onIfAll = 2212 321
+### for Xic0 -> pi Xi -> pi pi Lambda -> pi pi pi p 
+### and Omega_c -> pi Xi -> pi pi Lambda -> pi pi pi p
+3312:onMode = off
+3312:onIfAll = 3122 -211
+3122:onMode = off
+3122:onIfAll = 2212 -211
+### for Omega_c -> pi Omega -> pi K Lambda -> pi K pi p
+3334:onMode = off
+3334:onIfAll = 3122 -321
+
+### switch off all decay channels
+411:onMode = off
+421:onMode = off
+431:onMode = off
+4122:onMode = off
+4232:onMode = off
+4132:onMode = off
+443:onMode = off
+4332:onMode = off
+
+### D0 -> K pi
+421:onIfMatch = 321 211
+### D0 -> K pi pi0
+421:onIfMatch = 321 211 111
+
+### D+/- -> K pi pi 
+411:onIfMatch = 321 211 211
+### D+/- -> K* pi
+411:onIfMatch = 313 211
+### D+/- -> phi pi
+411:onIfMatch = 333 211
+
+### D_s -> K K*
+431:onIfMatch = 321 313
+### D_s -> Phi pi
+431:onIfMatch = 333 211
+
+### Lambda_c -> p K*
+4122:onIfMatch = 2212 313
+### Lambda_c -> Delta K
+4122:onIfMatch = 2224 321
+### Lambda_c -> Lambda(1520) pi
+4122:onIfMatch = 102134 211
+### Lambda_c -> p K pi
+4122:onIfMatch = 2212 321 211
+### Lambda_c -> pK0s
+4122:onIfMatch = 2212 311 
+
+### Xic+ -> pK*0
+4232:onIfMatch = 2212 313
+### Xic+ -> p K- pi+
+4232:onIfMatch = 2212 321 211
+### Xic+ -> Xi*0 pi+, Xi*->Xi- pi+
+4232:onIfMatch = 3324 211
+### Xic+ -> Xi- pi+ pi+
+4232:onIfMatch = 3312 211 211
+
+### Xic0 -> Xi- pi+
+4132:onIfMatch = 3312 211
+
+### Omega_c -> Omega pi
+4332:onIfMatch = 3334 211
+### Omega_c -> Xi pi
+4332:onIfMatch = 3312 211