From 6a2e2d2a954a34263772b7f071c2b79c1c61a847 Mon Sep 17 00:00:00 2001 From: fcolamar Date: Mon, 16 Jun 2025 14:18:09 +0200 Subject: [PATCH] Adding ALICE 3 Pb-Pb generator with forced D0 decays --- MC/config/ALICE3/ini/pythia8_PbPb_D0toKpi.ini | 9 +++++++++ .../generator/pythia8_PbPb_D0toKpi.cfg | 20 +++++++++++++++++++ 2 files changed, 29 insertions(+) create mode 100644 MC/config/ALICE3/ini/pythia8_PbPb_D0toKpi.ini create mode 100644 MC/config/ALICE3/pythia8/generator/pythia8_PbPb_D0toKpi.cfg diff --git a/MC/config/ALICE3/ini/pythia8_PbPb_D0toKpi.ini b/MC/config/ALICE3/ini/pythia8_PbPb_D0toKpi.ini new file mode 100644 index 000000000..04f617fa0 --- /dev/null +++ b/MC/config/ALICE3/ini/pythia8_PbPb_D0toKpi.ini @@ -0,0 +1,9 @@ +[Diamond] +width[2]=6.0 + +[GeneratorExternal] +fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C +funcName=generator_pythia8_ALICE3() + +[GeneratorPythia8] +config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_D0toKpi.cfg diff --git a/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_D0toKpi.cfg b/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_D0toKpi.cfg new file mode 100644 index 000000000..039d501a5 --- /dev/null +++ b/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_D0toKpi.cfg @@ -0,0 +1,20 @@ +### Specify beams +Beams:idA = 1000822080 +Beams:idB = 1000822080 +Beams:eCM = 5520.0 ### energy + +Beams:frameType = 1 +ParticleDecays:limitTau0 = on +ParticleDecays:tau0Max = 10. ### match alice: 1cm/c = 10.0mm/c + +### Initialize the Angantyr model to fit the total and semi-includive +### cross sections in Pythia within some tolerance. +HeavyIon:SigFitErr = 0.02,0.02,0.1,0.05,0.05,0.0,0.1,0.0 + +### These parameters are typicall suitable for sqrt(S_NN)=5TeV +HeavyIon:SigFitDefPar = 17.24,2.15,0.33,0.0,0.0,0.0,0.0,0.0 + +### Force decay of D0 into Kpi +421:oneChannel = 1 0.0389 0 -321 211 + +Random:setSeed = on