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configuration file for CLR-BLC3 tune #2200

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njacazio merged 2 commits into from
Dec 4, 2025
Merged

configuration file for CLR-BLC3 tune #2200

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d17ac8d
configuration file for CLR-BLC3 tune
navkumar123 Dec 4, 2025
313adf0
configuration for CLR-BLC3
navkumar123 Dec 4, 2025
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2 changes: 1 addition & 1 deletion MC/config/ALICE3/ini/pythia8_pp_ropes1_13tev.ini
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Expand Up @@ -6,4 +6,4 @@ fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALIC
funcName=generator_pythia8_ALICE3()

[GeneratorPythia8]
config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes_13tev.cfg
config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg
44 changes: 44 additions & 0 deletions MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg
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@@ -0,0 +1,44 @@
### ============================================
### PYTHIA 8 — CLR-BLC Mode 3 configuration
### Based on table: Monash vs CLR-BLC (Mode 3)
### ============================================

### Beams
Beams:idA = 2212
Beams:idB = 2212
Beams:eCM = 13000.
Beams:frameType = 1

### Decays (match ALICE)
ParticleDecays:limitTau0 = on
ParticleDecays:tau0Max = 10.0

### Processes and base tune
SoftQCD:inelastic = on # all inelastic processes
Tune:pp = 14 # Monash 2013 as baseline

### String fragmentation
StringPT:sigma = 0.335
StringZ:aLund = 0.36
StringZ:bLund = 0.56
StringFlav:probQQtoQ = 0.078 # probQQtoQ → Q (Mode 3)
StringFlav:probStoUD = 0.20 # s/u,d suppression (Mode 3)

# Diquark–diquark join probabilities (vector of 4 numbers)
StringFlav:probQQ1toQQ0join = 0.0275,0.0275,0.0275,0.0275 # Mode 3
### Multi-parton interactions
MultiPartonInteractions:pT0Ref = 2.05 # Mode 3 pT0Ref

### Beam remnants
BeamRemnants:remnantMode = 1 # required for CR mode 1
BeamRemnants:saturation = 5

### Colour reconnection: CLR-BLC Mode 3
ColourReconnection:mode = 1 # new CR scheme
ColourReconnection:allowDoubleJunRem = off # as in table
ColourReconnection:m0 = 0.3 # Mode 3 mass scale
ColourReconnection:allowJunctions = on
ColourReconnection:junctionCorrection = 1.15 # Mode 3
ColourReconnection:timeDilationMode = 3 # Mode 3
ColourReconnection:timeDilationPar = 0.073 # Mode 3