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[PWGHF] Fix deuteronFromLb for particle VETOes #18334

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Merged
fgrosa merged 4 commits into from
Oct 19, 2026
+30 −36
Merged

[PWGHF] Fix deuteronFromLb for particle VETOes #18334

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bf142f5
PWGHF: Fix deuteronFromLb for particle VETOes
Oct 16, 2026
0fb1cdd
PWGHF: Bugs removed from taskDeuteronFromLb
Oct 16, 2026
6754e55
Merge branch 'AliceO2Group:master' into deuteronFromLb-smallFix
MRazza879 Oct 16, 2026
6815cb1
PWGHF: Fix deuteron PID QA histograms
Oct 17, 2026
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66 changes: 30 additions & 36 deletions PWGHF/D2H/Tasks/taskDeuteronFromLb.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -137,14 +137,13 @@ struct HfTaskDeuteronFromLb {

qaHistos.add("Data/hDCAxyVsPt", "DCAxy #bar{d} vs p_{T}", {HistType::kTH2D, {ptAxis, dcaXyAxis}});
qaHistos.add("Data/hDCAzVsPt", "DCAz #bar{d} vs p_{T}", {HistType::kTH2D, {ptAxis, dcaZAxis}});
qaHistos.add("Data/hnSigmaTPCVsPt", "n#sigma TPC vs p_{T} for #bar{d} hypothesis; p_{T} (GeV/c); n#sigma TPC", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTOFVsPt", "n#sigma TOF vs p_{T} for #bar{d} hypothesis; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTPCVsPtFinalSel", "n#sigma TPC vs p_{T} for #bar{d} hypothesis; p_{T} (GeV/c); n#sigma TPC", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTOFVsPtFinalSel", "n#sigma TOF vs p_{T} for #bar{d} hypothesis; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/ptAntiDeuteron", "ptAntiDeuteron", {HistType::kTH1F, {ptAxis}});
qaHistos.add("Data/etaAntideuteron", "etaAntideuteron", {HistType::kTH1F, {{100, -1.0f, 1.0f, "eta #bar{d}"}}});
qaHistos.add("Data/hVtxZ", "Z-Vertex distribution after selection;Z (cm)", HistType::kTH1F, {{100, -50, 50}});
qaHistos.add("Data/hnSigmaTOFVsPtPurity", "n#sigma TOF vs p_{T} for #bar{d} hypothesis for Data-driven purity check; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTOFVsPtPurityVeto", "n#sigma TOF vs p_{T} for #bar{d} hypothesis for Data-driven purity check with TPC veto for e,pi,K,p; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTOFVsPtPurityVetoTPCTOFClean", "n#sigma TOF vs p_{T} for #bar{d} hypothesis for Data-driven purity check with TPC and TOF veto for e,pi,K,p; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTOFVsPtPurityNoVeto", "n#sigma TOF vs p_{T} for #bar{d} hypothesis for Data-driven purity check; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTOFVsPtPurityVeto", "n#sigma TOF vs p_{T} for #bar{d} hypothesis for Data-driven purity check with TPC+TOF veto for e,pi,K,p; p_{T} (GeV/c); n#sigma TOF", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaTPCVsPtPurity", "n#sigma TPC vs p_{T} for #bar{d} hypothesis for Data-driven purity check; p_{T} (GeV/c); n#sigma TPC", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
qaHistos.add("Data/hnSigmaITSVsPt", "n#sigma ITS vs p_{T} for #bar{d} hypothesis, used to clean up the TPC/TOF purity sample; p_{T} (GeV/c); n#sigma ITS", {HistType::kTH2D, {ptAxis, nSigmaAxis}});
// MC generated-level histograms
Expand Down Expand Up @@ -325,45 +324,42 @@ struct HfTaskDeuteronFromLb {

qaHistos.fill(HIST("Data/hnSigmaITSVsPt"), track.pt(), track.itsNSigmaDe());

// TPC veto against pi/K/p/e
const bool passTPCVeto = std::abs(track.tpcNSigmaPi()) > cfgTPCNsigma &&
std::abs(track.tpcNSigmaKa()) > cfgTPCNsigma &&
std::abs(track.tpcNSigmaPr()) > cfgTPCNsigma &&
std::abs(track.tpcNSigmaEl()) > cfgTPCNsigma;
// TOF veto against pi/K/p/e
const bool passTOFVeto = std::abs(track.tofNSigmaPi()) > cfgTofNsigma &&
std::abs(track.tofNSigmaKa()) > cfgTofNsigma &&
std::abs(track.tofNSigmaPr()) > cfgTofNsigma &&
std::abs(track.tofNSigmaEl()) > cfgTofNsigma;
const bool isElectron = std::abs(track.tpcNSigmaEl()) < cfgTPCNsigma && std::abs(track.tofNSigmaEl()) < cfgTofNsigma;
const bool isNotElectron = !isElectron;
const bool isPion = std::abs(track.tpcNSigmaPi()) < cfgTPCNsigma && std::abs(track.tofNSigmaPi()) < cfgTofNsigma;
const bool isNotPion = !isPion;
const bool isKaon = std::abs(track.tpcNSigmaKa()) < cfgTPCNsigma && std::abs(track.tofNSigmaKa()) < cfgTofNsigma;
const bool isNotKaon = !isKaon;
const bool isProton = std::abs(track.tpcNSigmaPr()) < cfgTPCNsigma && std::abs(track.tofNSigmaPr()) < cfgTofNsigma;
const bool isNotProton = !isProton;

const bool isTPCDeClean = isTPCDe && passTPCVeto;
const bool isTPCTOFDeClean = isTPCDe && isNotElectron && isNotPion && isNotKaon && isNotProton;

if (track.pt() < ptThresholdforPID) {
if (isITSDe) {
qaHistos.fill(HIST("Data/hnSigmaTPCVsPtPurity"), track.pt(), track.tpcNSigmaDe());
}
} else {
if (isTPCDe && track.hasTOF()) {
qaHistos.fill(HIST("Data/hnSigmaTOFVsPtPurity"), track.pt(), track.tofNSigmaDe());
qaHistos.fill(HIST("Data/hnSigmaTOFVsPtPurityNoVeto"), track.pt(), track.tofNSigmaDe());
}
if (isTPCDeClean && track.hasTOF()) {
if (isTPCTOFDeClean && track.hasTOF()) {
qaHistos.fill(HIST("Data/hnSigmaTOFVsPtPurityVeto"), track.pt(), track.tofNSigmaDe());
}
if (isTPCDeClean && passTOFVeto && track.hasTOF()) {
qaHistos.fill(HIST("Data/hnSigmaTOFVsPtPurityVetoTPCTOFClean"), track.pt(), track.tofNSigmaDe());
}
}

const bool passFinalSel = (track.pt() < ptThresholdforPID && isTPCDe && isITSDe) ||
(track.pt() >= ptThresholdforPID && isTPCDeClean && passTOFVeto && isTOFDe && track.hasTOF());
(track.pt() >= ptThresholdforPID && isTPCTOFDeClean && isTOFDe && track.hasTOF());

if (passFinalSel) {
qaHistos.fill(HIST("Data/ptAntiDeuteron"), track.pt());
qaHistos.fill(HIST("Data/etaAntideuteron"), track.eta());
qaHistos.fill(HIST("Data/hDCAxyVsPt"), track.pt(), dca[0]);
qaHistos.fill(HIST("Data/hDCAzVsPt"), track.pt(), dca[1]);
qaHistos.fill(HIST("Data/hnSigmaTPCVsPt"), track.pt(), track.tpcNSigmaDe());
qaHistos.fill(HIST("Data/hnSigmaTOFVsPt"), track.pt(), track.tofNSigmaDe());
qaHistos.fill(HIST("Data/hnSigmaTPCVsPtFinalSel"), track.pt(), track.tpcNSigmaDe());
if (track.pt() >= ptThresholdforPID) {
qaHistos.fill(HIST("Data/hnSigmaTOFVsPtFinalSel"), track.pt(), track.tofNSigmaDe());
}
}
}
}
Expand Down Expand Up @@ -486,18 +482,16 @@ struct HfTaskDeuteronFromLb {
}
}

// TPC veto against pi/K/p/e
const bool passTPCVeto = std::abs(track.tpcNSigmaPi()) > cfgTPCNsigma &&
std::abs(track.tpcNSigmaKa()) > cfgTPCNsigma &&
std::abs(track.tpcNSigmaPr()) > cfgTPCNsigma &&
std::abs(track.tpcNSigmaEl()) > cfgTPCNsigma;
// TOF veto against pi/K/p/e
const bool passTOFVeto = std::abs(track.tofNSigmaPi()) > cfgTofNsigma &&
std::abs(track.tofNSigmaKa()) > cfgTofNsigma &&
std::abs(track.tofNSigmaPr()) > cfgTofNsigma &&
std::abs(track.tofNSigmaEl()) > cfgTofNsigma;
const bool isElectron = std::abs(track.tpcNSigmaEl()) < cfgTPCNsigma && std::abs(track.tofNSigmaEl()) < cfgTofNsigma;
const bool isNotElectron = !isElectron;
const bool isPion = std::abs(track.tpcNSigmaPi()) < cfgTPCNsigma && std::abs(track.tofNSigmaPi()) < cfgTofNsigma;
const bool isNotPion = !isPion;
const bool isKaon = std::abs(track.tpcNSigmaKa()) < cfgTPCNsigma && std::abs(track.tofNSigmaKa()) < cfgTofNsigma;
const bool isNotKaon = !isKaon;
const bool isProton = std::abs(track.tpcNSigmaPr()) < cfgTPCNsigma && std::abs(track.tofNSigmaPr()) < cfgTofNsigma;
const bool isNotProton = !isProton;

const bool isTPCDeClean = isTPCDe && passTPCVeto;
const bool isTPCTOFDeClean = isTPCDe && isNotElectron && isNotPion && isNotKaon && isNotProton;

if (isTrueDeuteron) {
int motherPdg = 0;
Expand Down Expand Up @@ -541,7 +535,7 @@ struct HfTaskDeuteronFromLb {

// same final selection as in data
const bool passFinalSel = (track.pt() < ptThresholdforPID && isTPCDe && isITSDe) ||
(track.pt() >= ptThresholdforPID && isTPCDeClean && passTOFVeto && isTOFDe && track.hasTOF());
(track.pt() >= ptThresholdforPID && isTPCTOFDeClean && isTOFDe && track.hasTOF());
if (passFinalSel) {
if (motherPdg == pdgCodeBeautyMeson) {
qaHistos.fill(HIST("MCReco/hDCAxyVsPtDeFromBminus"), track.pt(), dca[0]);
Expand Down
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