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[PWGHF] Fixing code for azimuthal correlations with identified kaons #13463

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Merged
apalasciano merged 3 commits into from
Oct 21, 2025
Merged

[PWGHF] Fixing code for azimuthal correlations with identified kaons #13463

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861c296
Fixing code for azimuthal correlations with identified kaons
scattaru Oct 20, 2025
2ca9aad
Added control histogram
scattaru Oct 20, 2025
85abb91
Fixed error
scattaru Oct 21, 2025
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29 changes: 27 additions & 2 deletions PWGHF/HFC/TableProducer/correlatorDsHadrons.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -257,6 +257,7 @@ struct HfCorrelatorDsHadrons {
AxisSpec const axisPosZ = {binsPosZ, "PosZ"};
AxisSpec const axisPoolBin = {binsPoolBin, "PoolBin"};
AxisSpec const axisStatus = {15, 0.5, 15.5, "Selection status"};
const AxisSpec axisPid{20, -10.f, 10.f, "n #sigma"};

// Histograms for data analysis
registry.add("hCollisionPoolBin", "Ds candidates collision pool bin", {HistType::kTH1F, {axisPoolBin}});
Expand All @@ -278,6 +279,14 @@ struct HfCorrelatorDsHadrons {
registry.add("hMassDsData", "Ds candidates mass", {HistType::kTH1F, {axisMassD}});
registry.add("hDsPoolBin", "Ds candidates pool bin", {HistType::kTH1F, {axisPoolBin}});
registry.add("hTracksPoolBin", "Particles associated pool bin", {HistType::kTH1F, {axisPoolBin}});
if (pidTrkApplied) {
registry.add("hTpcNSigmaPIDpion", "n sigma tpc for pion hypothesis", {HistType::kTH2F, {{axisPid}, {axisPtHadron}}});
registry.add("hTpcNSigmaPIDkaon", "n sigma tpc for kaon hypothesis", {HistType::kTH2F, {{axisPid}, {axisPtHadron}}});
registry.add("hTpcNSigmaPIDproton", "n sigma tpc for proton hypothesis", {HistType::kTH2F, {{axisPid}, {axisPtHadron}}});
registry.add("hTofNSigmaPIDpion", "n sigma tof for pion hypothesis", {HistType::kTH2F, {{axisPid}, {axisPtHadron}}});
registry.add("hTofNSigmaPIDkaon", "n sigma tof for kaon hypothesis", {HistType::kTH2F, {{axisPid}, {axisPtHadron}}});
registry.add("hTofNSigmaPIDproton", "n sigma tof for proton hypothesis", {HistType::kTH2F, {{axisPid}, {axisPtHadron}}});
}
}
// Histograms for MC Reco analysis
if (fillHistoMcRec) {
Expand Down Expand Up @@ -321,6 +330,7 @@ struct HfCorrelatorDsHadrons {
if (pidTrkApplied) {
registry.add("hCorrKaonsLSPairs", "Ds-kaon correlations LS MC Gen", {HistType::kTH3F, {{axisPhi}, {axisPtD}, {axisPtHadron}}});
registry.add("hCorrKaonsULSPairs", "Ds-kaon correlations ULS MC Gen", {HistType::kTH3F, {{axisPhi}, {axisPtD}, {axisPtHadron}}});
registry.add("hDsWoKaons", "Collisions with Ds mesons without kaons", {HistType::kTH1F, {{1, -0.5, 0.5, "n coll w/o kaons"}}});
}
}
}
Expand Down Expand Up @@ -724,6 +734,9 @@ struct HfCorrelatorDsHadrons {
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 Down Expand Up @@ -754,8 +767,11 @@ struct HfCorrelatorDsHadrons {
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());
} else { // ULS pairs
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++;
}
}
}
Expand All @@ -771,8 +787,11 @@ struct HfCorrelatorDsHadrons {
0);
entryDsHadronRecoInfo(MassDS, true, isDecayChan);
entryDsHadronGenInfo(isDsPrompt, particleAssoc.isPhysicalPrimary(), trackOrigin);
} // end loop generated particles
if (numberOfCorrKaons == 0) {
registry.fill(HIST("hDsWoKaons"), numberOfCorrKaons);
}
} // end loop generated particles
} // if statement for Ds selection
} // end loop generated Ds
} // end loop reconstructed collision
} // end loop generated collision
Expand Down Expand Up @@ -821,6 +840,12 @@ struct HfCorrelatorDsHadrons {
if (!passPIDSelection(track, trkPIDspecies, pidTPCMax, pidTOFMax, tofPIDThreshold, forceTOF)) {
continue;
}
registry.fill(HIST("hTpcNSigmaPIDpion"), track.tpcNSigmaPi(), track.pt());
registry.fill(HIST("hTpcNSigmaPIDkaon"), track.tpcNSigmaKa(), track.pt());
registry.fill(HIST("hTpcNSigmaPIDproton"), track.tpcNSigmaPr(), track.pt());
registry.fill(HIST("hTofNSigmaPIDpion"), track.tofNSigmaPi(), track.pt());
registry.fill(HIST("hTofNSigmaPIDkaon"), track.tofNSigmaKa(), track.pt());
registry.fill(HIST("hTofNSigmaPIDproton"), track.tofNSigmaPr(), track.pt());
}
assocTrackReduced(indexHfcReducedCollision, track.globalIndex(), track.phi(), track.eta(), track.pt() * track.sign());
assocTrackSelInfo(indexHfcReducedCollision, track.tpcNClsCrossedRows(), track.itsClusterMap(), track.itsNCls(), track.dcaXY(), track.dcaZ());
Expand Down
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