From d17ac8d6f6f6d368d57815b9933227a906e0e980 Mon Sep 17 00:00:00 2001 From: Navneet Date: Fri, 5 Dec 2025 00:30:10 +0530 Subject: [PATCH 1/2] configuration file for CLR-BLC3 tune --- .../ALICE3/ini/pythia8_pp_ropes1_13tev.ini | 2 +- .../generator/pythia8_pp_ropes3_13tev.cfg | 44 +++++++++++++++++++ 2 files changed, 45 insertions(+), 1 deletion(-) create mode 100644 MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg diff --git a/MC/config/ALICE3/ini/pythia8_pp_ropes1_13tev.ini b/MC/config/ALICE3/ini/pythia8_pp_ropes1_13tev.ini index f3622c4de..e13ae8b94 100644 --- a/MC/config/ALICE3/ini/pythia8_pp_ropes1_13tev.ini +++ b/MC/config/ALICE3/ini/pythia8_pp_ropes1_13tev.ini @@ -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 diff --git a/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg b/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg new file mode 100644 index 000000000..fb89058bd --- /dev/null +++ b/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg @@ -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 = 13600. +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 + From 313adf0ae5de363505fa5adc4a04b6d3cc09fea7 Mon Sep 17 00:00:00 2001 From: Navneet Date: Fri, 5 Dec 2025 00:56:31 +0530 Subject: [PATCH 2/2] configuration for CLR-BLC3 --- MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg b/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg index fb89058bd..0534f4403 100644 --- a/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg +++ b/MC/config/ALICE3/pythia8/generator/pythia8_pp_ropes3_13tev.cfg @@ -6,7 +6,7 @@ ### Beams Beams:idA = 2212 Beams:idB = 2212 -Beams:eCM = 13600. +Beams:eCM = 13000. Beams:frameType = 1 ### Decays (match ALICE)