From 31f2faf81cbe61d0faf5831678e5d6c57d475ea4 Mon Sep 17 00:00:00 2001 From: Nasir Mehdi Malik <89008506+nasirmehdimalik@users.noreply.github.com> Date: Mon, 29 Jun 2026 11:59:04 +0530 Subject: [PATCH 1/3] Add particle data Id for 20Ne in Pythia8 --- MC/config/PWGLF/pythia8/generator_pythia8_LF_rapidity.C | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/MC/config/PWGLF/pythia8/generator_pythia8_LF_rapidity.C b/MC/config/PWGLF/pythia8/generator_pythia8_LF_rapidity.C index b88a9a7a6..0a10286dd 100644 --- a/MC/config/PWGLF/pythia8/generator_pythia8_LF_rapidity.C +++ b/MC/config/PWGLF/pythia8/generator_pythia8_LF_rapidity.C @@ -116,7 +116,8 @@ class GeneratorPythia8LFRapidity : public o2::eventgen::GeneratorPythia8 } pythiaObjectSignal.readString("Random:setSeed = on"); pythiaObjectSignal.readString("Random:seed =" + std::to_string(gRandom->Integer(900000000 - 2) + 1)); - + pythiaObjectMinimumBias.particleData.addParticle(1000100200, "20Ne", 6, 30, 0, 19.992440); + mPythiaGun.particleData.addParticle(1000100200, "20Ne", 6, 30, 0, 19.992440); if (!pythiaObjectMinimumBias.init()) { LOG(fatal) << "Could not pythiaObjectMinimumBias.init() from " << pythiaCfgMb; } @@ -141,6 +142,9 @@ class GeneratorPythia8LFRapidity : public o2::eventgen::GeneratorPythia8 } pythiaObjectMinimumBias.readString("Random:setSeed = on"); pythiaObjectMinimumBias.readString("Random:seed =" + std::to_string(gRandom->Integer(900000000 - 2) + 1)); + + pythiaObjectMinimumBias.particleData.addParticle(1000100200, "20Ne", 6, 30, 0, 19.992440); + mPythiaGun.particleData.addParticle(1000100200, "20Ne", 6, 30, 0, 19.992440); if (!pythiaObjectMinimumBias.init()) { LOG(fatal) << "Could not pythiaObjectMinimumBias.init() from " << pythiaCfgMb; } From 14c357e5049de4743452d05c1affce46abf8c0c5 Mon Sep 17 00:00:00 2001 From: Nasir Mehdi Malik <89008506+nasirmehdimalik@users.noreply.github.com> Date: Mon, 29 Jun 2026 12:00:29 +0530 Subject: [PATCH 2/3] Injected baryonic resonances nene system --- .../GeneratorLF_ResonancesBaryonic_NeNe_injection.ini | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 MC/config/PWGLF/ini/GeneratorLF_ResonancesBaryonic_NeNe_injection.ini diff --git a/MC/config/PWGLF/ini/GeneratorLF_ResonancesBaryonic_NeNe_injection.ini b/MC/config/PWGLF/ini/GeneratorLF_ResonancesBaryonic_NeNe_injection.ini new file mode 100644 index 000000000..2646765a9 --- /dev/null +++ b/MC/config/PWGLF/ini/GeneratorLF_ResonancesBaryonic_NeNe_injection.ini @@ -0,0 +1,10 @@ +[GeneratorExternal] +fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGLF/pythia8/generator_pythia8_LF_rapidity.C +funcName=generateLFRapidity("${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGLF/pythia8/generator/resonancelistgun_baryonic_inj.json", true, 4, false, false, "${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_NeNe_536.cfg", "") + +[GeneratorPythia8] # if triggered then this will be used as the background event +config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_NeNe_536.cfg + +[DecayerPythia8] # after for transport code! +config[0]=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/decayer/base.cfg +config[1]=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGLF/pythia8/generator/resonances_baryonic.cfg From bf5d8a0b63aa2ca81ab1b685ee71b3066e7d5e61 Mon Sep 17 00:00:00 2001 From: Nasir Mehdi Malik <89008506+nasirmehdimalik@users.noreply.github.com> Date: Mon, 29 Jun 2026 12:01:18 +0530 Subject: [PATCH 3/3] inject baryonic resonance Lambda(1520) and Xi --- ...atorLF_ResonancesBaryonic_NeNe_injection.C | 142 ++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 MC/config/PWGLF/ini/tests/GeneratorLF_ResonancesBaryonic_NeNe_injection.C diff --git a/MC/config/PWGLF/ini/tests/GeneratorLF_ResonancesBaryonic_NeNe_injection.C b/MC/config/PWGLF/ini/tests/GeneratorLF_ResonancesBaryonic_NeNe_injection.C new file mode 100644 index 000000000..63a9b6922 --- /dev/null +++ b/MC/config/PWGLF/ini/tests/GeneratorLF_ResonancesBaryonic_NeNe_injection.C @@ -0,0 +1,142 @@ +int External() +{ + std::string path{"o2sim_Kine.root"}; + int numberOfInjectedSignalsPerEvent{1}; + int numberOfGapEvents{4}; + int numberOfEventsProcessed{0}; + int numberOfEventsProcessedWithoutInjection{0}; + std::vector injectedPDGs = { + 102134, // Lambda(1520)0 + -102134, // Lambda(1520)0bar + 3324, // Xi(1530)0 + -3324 // Xi(1530)0bar + }; + std::vector> decayDaughters = { + {2212, -321}, // Lambda(1520)0 + {-2212, 321}, // Lambda(1520)0bar + {3312, 211}, // Xi(1530)0 + {-3312, -211} // Xi(1530)0bar + }; + + auto nInjection = injectedPDGs.size(); + + TFile file(path.c_str(), "READ"); + if (file.IsZombie()) + { + std::cerr << "Cannot open ROOT file " << path << "\n"; + return 1; + } + + auto tree = (TTree *)file.Get("o2sim"); + if (!tree) + { + std::cerr << "Cannot find tree o2sim in file " << path << "\n"; + return 1; + } + std::vector *tracks{}; + tree->SetBranchAddress("MCTrack", &tracks); + + std::vector nSignal; + for (int i = 0; i < nInjection; i++) + { + nSignal.push_back(0); + } + std::vector> nDecays; + std::vector nNotDecayed; + for (int i = 0; i < nInjection; i++) + { + std::vector nDecay; + for (int j = 0; j < decayDaughters[i].size(); j++) + { + nDecay.push_back(0); + } + nDecays.push_back(nDecay); + nNotDecayed.push_back(0); + } + auto nEvents = tree->GetEntries(); + bool hasInjection = false; + for (int i = 0; i < nEvents; i++) + { + hasInjection = false; + numberOfEventsProcessed++; + auto check = tree->GetEntry(i); + for (int idxMCTrack = 0; idxMCTrack < tracks->size(); ++idxMCTrack) + { + auto track = tracks->at(idxMCTrack); + auto pdg = track.GetPdgCode(); + auto it = std::find(injectedPDGs.begin(), injectedPDGs.end(), pdg); + int index = std::distance(injectedPDGs.begin(), it); // index of injected PDG + if (it != injectedPDGs.end()) // found + { + // count signal PDG + nSignal[index]++; + if (track.getFirstDaughterTrackId() < 0) + { + nNotDecayed[index]++; + continue; + } + for (int j{track.getFirstDaughterTrackId()}; j <= track.getLastDaughterTrackId(); ++j) + { + auto pdgDau = tracks->at(j).GetPdgCode(); + bool foundDau = false; + // count decay PDGs + for (int idxDaughter = 0; idxDaughter < decayDaughters[index].size(); ++idxDaughter) + { + if (pdgDau == decayDaughters[index][idxDaughter]) + { + nDecays[index][idxDaughter]++; + foundDau = true; + hasInjection = true; + break; + } + } + if (!foundDau) + { + std::cerr << "Decay daughter not found: " << pdg << " -> " << pdgDau << "\n"; + } + } + } + } + if (!hasInjection) + { + numberOfEventsProcessedWithoutInjection++; + } + } + std::cout << "--------------------------------\n"; + std::cout << "# Events: " << nEvents << "\n"; + for (int i = 0; i < nInjection; i++) + { + std::cout << "# Mother \n"; + std::cout << injectedPDGs[i] << " generated: " << nSignal[i] << ", " << nNotDecayed[i] << " did not decay\n"; + if (nSignal[i] == 0) + { + std::cerr << "No generated: " << injectedPDGs[i] << "\n"; + // return 1; // At least one of the injected particles should be generated + } + for (int j = 0; j < decayDaughters[i].size(); j++) + { + std::cout << "# Daughter " << decayDaughters[i][j] << ": " << nDecays[i][j] << "\n"; + } + // if (nSignal[i] != nEvents * numberOfInjectedSignalsPerEvent) + // { + // std::cerr << "Number of generated: " << injectedPDGs[i] << ", lower than expected\n"; + // // return 1; // Don't need to return 1, since the number of generated particles is not the same for each event + // } + } + std::cout << "--------------------------------\n"; + std::cout << "Number of events processed: " << numberOfEventsProcessed << "\n"; + std::cout << "Number of input for the gap events: " << numberOfGapEvents << "\n"; + std::cout << "Number of events processed without injection: " << numberOfEventsProcessedWithoutInjection << "\n"; + // injected event + numberOfGapEvents*gap events + injected event + numberOfGapEvents*gap events + ... + // total fraction of the gap event: numberOfEventsProcessedWithoutInjection/numberOfEventsProcessed + float ratioOfNormalEvents = numberOfEventsProcessedWithoutInjection / numberOfEventsProcessed; + if (ratioOfNormalEvents > 0.75) + { + std::cout << "The number of injected event is loo low!!" << std::endl; + return 1; + } + + return 0; +} + +void GeneratorLF_ResonancesBaryonic_NeNe_injection() { External(); }