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[PWGHF] Added ULS and LS separation in MC Gen processes #14769

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Merged
apalasciano merged 2 commits into from
Feb 4, 2026
+93 −41
Merged

[PWGHF] Added ULS and LS separation in MC Gen processes #14769

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fbad808
Added ULS and LS separation in MC Gen processes
scattaru Feb 3, 2026
aef6bed
Fix bud in MC-ME process
scattaru Feb 3, 2026
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91 changes: 53 additions & 38 deletions PWGHF/HFC/TableProducer/correlatorDsHadrons.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -759,25 +759,23 @@ struct HfCorrelatorDsHadrons {
listDaughters.clear();
RecoDecay::getDaughters(particle, &listDaughters, arrDaughDsPDG, 2);
int counterDaughters = 0;
// Assign Ds charge sign
int chargeDs = 0;
if (particle.pdgCode() == kDS) {
chargeDs = 1;
} else {
chargeDs = -1;
}
// Find Ds daughters
if (listDaughters.size() == NDaughtersDs) {
for (const auto& dauIdx : listDaughters) {
// auto daughI = mcParticles.rawIteratorAt(dauIdx - mcParticles.offset());
auto daughI = groupedMcParticles.rawIteratorAt(dauIdx - groupedMcParticles.offset());
counterDaughters += 1;
if (counterDaughters == 1) {
if (daughI.pdgCode() == kKPlus) {
chargeDs = 1;
} else {
chargeDs = -1;
}
}
prongsId[counterDaughters - 1] = daughI.globalIndex();
}
}

int numberOfCorrKaons = 0;

// Ds Hadron correlation dedicated section
for (const auto& particleAssoc : groupedMcParticles) {
if (std::abs(particleAssoc.eta()) > etaTrackMax || particleAssoc.pt() < ptTrackMin || particleAssoc.pt() > ptTrackMax) {
Expand All @@ -792,46 +790,37 @@ struct HfCorrelatorDsHadrons {
if (!particleAssoc.isPhysicalPrimary()) {
continue;
}

if (isDsPrompt) {
registry.fill(HIST("hCorrAllPrimaryParticles"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
if (std::abs(particleAssoc.pdgCode()) == kPiPlus) {
registry.fill(HIST("hCorrAllPrimaryHadrons"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
registry.fill(HIST("hCorrAllPrimaryPions"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
} else if (std::abs(particleAssoc.pdgCode()) == kKPlus) {
registry.fill(HIST("hCorrAllPrimaryHadrons"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
registry.fill(HIST("hCorrAllPrimaryKaons"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
} else if (std::abs(particleAssoc.pdgCode()) == kProton) {
registry.fill(HIST("hCorrAllPrimaryHadrons"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
registry.fill(HIST("hCorrAllPrimaryProtons"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
if (pidTrkApplied) {
// MC truth match
if (trkPIDspecies->at(0) == o2::track::PID::Kaon && std::abs(particleAssoc.pdgCode()) != kKPlus) {
continue;
}
if (trkPIDspecies->at(0) == o2::track::PID::Pion && std::abs(particleAssoc.pdgCode()) != kPiPlus) {
continue;
}
if (pidTrkApplied) {
if (((chargeDs == 1) && (particleAssoc.pdgCode() == kKPlus)) || ((chargeDs == -1) && (particleAssoc.pdgCode() == kKMinus))) { // LS pairs
registry.fill(HIST("hCorrKaonsLSPairs"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
numberOfCorrKaons++;
}
if (((chargeDs == 1) && (particleAssoc.pdgCode() == kKMinus)) || ((chargeDs == -1) && (particleAssoc.pdgCode() == kKPlus))) { // ULS pairs
registry.fill(HIST("hCorrKaonsULSPairs"), getDeltaPhi(particleAssoc.phi(), particle.phi()), particle.pt(), particleAssoc.pt());
numberOfCorrKaons++;
}
if (trkPIDspecies->at(0) == o2::track::PID::Proton && std::abs(particleAssoc.pdgCode()) != kProton) {
continue;
}
}

int chargeParticle = 0;
if ((particleAssoc.pdgCode() == kElectron) || (particleAssoc.pdgCode() == kMuonMinus) || (particleAssoc.pdgCode() == kPiMinus) || (particleAssoc.pdgCode()) == kKMinus || (particleAssoc.pdgCode() == kProtonBar)) {
chargeParticle = -1;
} else {
chargeParticle = 1;
}
// trackOrigin = RecoDecay::getCharmHadronOrigin(mcParticles, particleAssoc, true);
trackOrigin = RecoDecay::getCharmHadronOrigin(groupedMcParticles, particleAssoc, true);
registry.fill(HIST("hPtParticleAssocMcGen"), particleAssoc.pt());
entryDsHadronPair(getDeltaPhi(particleAssoc.phi(), particle.phi()),
particleAssoc.eta() - particle.eta(),
particle.pt(),
particleAssoc.pt(),
particle.pt() * chargeDs,
particleAssoc.pt() * chargeParticle,
poolBin,
0);
entryDsHadronRecoInfo(MassDS, true, isDecayChan);
entryDsHadronGenInfo(isDsPrompt, particleAssoc.isPhysicalPrimary(), trackOrigin);
} // end loop generated particles
if (numberOfCorrKaons == 0) {
registry.fill(HIST("hDsWoKaons"), numberOfCorrKaons);
}
} // if statement for Ds selection
} // end loop generated Ds
} // end loop reconstructed collision
Expand Down Expand Up @@ -1029,7 +1018,7 @@ struct HfCorrelatorDsHadrons {
isDsPrompt = candidate.originMcRec() == RecoDecay::OriginType::Prompt;
// Ds Signal
isDsSignal = std::abs(candidate.flagMcMatchRec()) == hf_decay::hf_cand_3prong::DecayChannelMain::DsToPiKK;
isDecayChan = candidate.flagMcDecayChanRec() == decayChannel;
isDecayChan = candidate.flagMcDecayChanRec() == channelsResonant[decayChannel];
if (pAssoc.has_mcParticle()) {
auto mcParticle = pAssoc.template mcParticle_as<aod::McParticles>();
isPhysicalPrimary = mcParticle.isPhysicalPrimary();
Expand Down Expand Up @@ -1095,12 +1084,38 @@ struct HfCorrelatorDsHadrons {
if (!particleAssoc.isPhysicalPrimary()) {
continue;
}
if (pidTrkApplied) {
// MC truth match
if (trkPIDspecies->at(0) == o2::track::PID::Kaon && std::abs(particleAssoc.pdgCode()) != kKPlus) {
continue;
}
if (trkPIDspecies->at(0) == o2::track::PID::Pion && std::abs(particleAssoc.pdgCode()) != kPiPlus) {
continue;
}
if (trkPIDspecies->at(0) == o2::track::PID::Proton && std::abs(particleAssoc.pdgCode()) != kProton) {
continue;
}
}

int chargeDs = 0;
if (candidate.pdgCode() == kDS) {
chargeDs = 1;
} else {
chargeDs = -1;
}

int chargeParticle = 0;
if ((particleAssoc.pdgCode() == kElectron) || (particleAssoc.pdgCode() == kMuonMinus) || (particleAssoc.pdgCode() == kPiMinus) || (particleAssoc.pdgCode()) == kKMinus || (particleAssoc.pdgCode() == kProtonBar)) {
chargeParticle = -1;
} else {
chargeParticle = 1;
}
int trackOrigin = RecoDecay::getCharmHadronOrigin(mcParticles, particleAssoc, true);
bool isDsPrompt = candidate.originMcGen() == RecoDecay::OriginType::Prompt;
entryDsHadronPair(getDeltaPhi(particleAssoc.phi(), candidate.phi()),
particleAssoc.eta() - candidate.eta(),
candidate.pt(),
particleAssoc.pt(),
candidate.pt() * chargeDs,
particleAssoc.pt() * chargeParticle,
poolBin,
0);
entryDsHadronRecoInfo(MassDS, true, true);
Expand Down
43 changes: 40 additions & 3 deletions PWGHF/HFC/Tasks/taskCorrelationDsHadrons.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,12 @@ struct HfTaskCorrelationDsHadrons {
registry.add("hDeltaEtaPtIntSidebandRightMcRec", "Ds-h deltaEta sideband right region MC reco", {HistType::kTH1F, {axisDetlaEta}});
registry.add("hDeltaPhiPtIntSidebandRightMcRec", "Ds-h deltaPhi sideband right region MC reco", {HistType::kTH1F, {axisDetlaPhi}});
registry.add("hCorrel2DVsPtSidebandRightMcRec", "Ds-h correlations sideband right region MC reco", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});

if (doLSpair) {
registry.add("hCorrel2DVsPtPhysicalPrimaryMcRecLS", "Ds-h correlations signal region (only true primary particles) MC reco", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisDsPrompt}, {axisPoolBin}}});
}
if (doULSpair) {
registry.add("hCorrel2DVsPtPhysicalPrimaryMcRecULS", "Ds-h correlations signal region (only true primary particles) MC reco", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisDsPrompt}, {axisPoolBin}}});
}
registry.get<THnSparse>(HIST("hCorrel2DVsPtSignalRegionMcRec"))->Sumw2();
registry.get<THnSparse>(HIST("hCorrel2DVsPtPhysicalPrimaryMcRec"))->Sumw2();
registry.get<THnSparse>(HIST("hCorrel2DVsPtSidebandLeftMcRec"))->Sumw2();
Expand All @@ -270,6 +275,14 @@ struct HfTaskCorrelationDsHadrons {
registry.add("hCorrel2DVsPtMcGenNonPromptDsNonPromptHadron", "Ds-h correlations non prompt Ds non prompt h MC Gen", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});
registry.add("hCorrel2DVsPtMcGenNonPrompt", "Ds-h correlations NonPrompt MC Gen", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});

if (doLSpair) {
registry.add("hCorrel2DVsPtMcGenPromptLS", "Ds-h correlations Prompt MC Gen", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});
registry.add("hCorrel2DVsPtMcGenNonPromptLS", "Ds-h correlations NonPrompt MC Gen", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});
}
if (doULSpair) {
registry.add("hCorrel2DVsPtMcGenPromptULS", "Ds-h correlations Prompt MC Gen", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});
registry.add("hCorrel2DVsPtMcGenNonPromptULS", "Ds-h correlations NonPrompt MC Gen", {HistType::kTHnSparseD, {{axisDetlaPhi}, {axisDetlaEta}, {axisPtD}, {axisPtHadron}, {axisPoolBin}}});
}
registry.get<THnSparse>(HIST("hCorrel2DVsPtMcGen"))->Sumw2();
registry.get<THnSparse>(HIST("hCorrel2DVsPtMcGenPrompt"))->Sumw2();
registry.get<THnSparse>(HIST("hCorrel2DVsPtMcGenNonPrompt"))->Sumw2();
Expand Down Expand Up @@ -642,7 +655,13 @@ struct HfTaskCorrelationDsHadrons {
registry.fill(HIST("hDeltaPhiPtIntSignalRegionMcRec"), deltaPhi, efficiencyWeight);
registry.fill(HIST("hCorrel2DVsPtSignalRegionMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
if (isPhysicalPrimary) {
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
if (doLSpair && ((ptD > 0. && ptHadron > 0.) || (ptD < 0. && ptHadron < 0.))) { // like-sign pairs
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRecLS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
} else if (doULSpair && ((ptD > 0. && ptHadron < 0.) || (ptD < 0. && ptHadron > 0.))) { // unlike-sign pairs
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRecULS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
} else { // default case
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
}
if (statusDsPrompt == 1 && statusPromptHadron == RecoDecay::OriginType::Prompt) {
registry.fill(HIST("hCorrel2DVsPtSignalRegionPromptDsPromptHadronMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin, efficiencyWeight);
} else if (statusDsPrompt == 0 && statusPromptHadron == RecoDecay::OriginType::NonPrompt) {
Expand Down Expand Up @@ -685,11 +704,23 @@ struct HfTaskCorrelationDsHadrons {
registry.fill(HIST("hDeltaPhiPtIntMcGen"), deltaPhi);
if (isDsPrompt) {
registry.fill(HIST("hCorrel2DVsPtMcGenPrompt"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
if (doULSpair) {
registry.fill(HIST("hCorrel2DVsPtMcGenPromptULS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
}
if (doLSpair && ((ptD > 0. && ptHadron > 0.) || (ptD < 0. && ptHadron < 0.))) {
registry.fill(HIST("hCorrel2DVsPtMcGenPromptLS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
}
if (statusPromptHadron == RecoDecay::OriginType::Prompt) {
registry.fill(HIST("hCorrel2DVsPtMcGenPromptDsPromptHadron"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
}
} else {
registry.fill(HIST("hCorrel2DVsPtMcGenNonPrompt"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
if (doULSpair) {
registry.fill(HIST("hCorrel2DVsPtMcGenNonPromptULS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
}
if (doLSpair && ((ptD > 0. && ptHadron > 0.) || (ptD < 0. && ptHadron < 0.))) {
registry.fill(HIST("hCorrel2DVsPtMcGenNonPromptLS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
}
if (statusPromptHadron == RecoDecay::OriginType::NonPrompt) {
registry.fill(HIST("hCorrel2DVsPtMcGenNonPromptDsNonPromptHadron"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin);
}
Expand Down Expand Up @@ -876,7 +907,13 @@ struct HfTaskCorrelationDsHadrons {
registry.fill(HIST("hDeltaPhiPtIntSignalRegionMcRec"), deltaPhi, efficiencyWeight);
registry.fill(HIST("hCorrel2DVsPtSignalRegionMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
if (isPhysicalPrimary) {
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
if (doLSpair && ((ptD > 0. && ptHadron > 0.) || (ptD < 0. && ptHadron < 0.))) { // like-sign pairs
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRecLS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
} else if (doULSpair && ((ptD > 0. && ptHadron < 0.) || (ptD < 0. && ptHadron > 0.))) { // unlike-sign pairs
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRecULS"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
} else { // default case
registry.fill(HIST("hCorrel2DVsPtPhysicalPrimaryMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), statusDsPrompt, poolBin, efficiencyWeight);
}
if (statusDsPrompt == 1 && statusPromptHadron == RecoDecay::OriginType::Prompt) {
registry.fill(HIST("hCorrel2DVsPtSignalRegionPromptDsPromptHadronMcRec"), deltaPhi, deltaEta, std::abs(ptD), std::abs(ptHadron), poolBin, efficiencyWeight);
} else if (statusDsPrompt == 0 && statusPromptHadron == RecoDecay::OriginType::NonPrompt) {
Expand Down
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