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PWGLF: Add QA histograms for ST filter #3874

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mpuccio merged 1 commit into from
Nov 15, 2023
Merged

PWGLF: Add QA histograms for ST filter #3874

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31 changes: 21 additions & 10 deletions EventFiltering/PWGLF/strangenessFilter.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -299,6 +299,10 @@ struct strangenessFilter {
QAHistosStrangenessTracking.add("hDcaVsR", "DCA;DCA (cm);R (cm)", HistType::kTH2D, {{200, 0., .5}, {200, 0., 10.}});
QAHistosStrangenessTracking.add("hPtCascCand", "cascades;p_{T} (GeV/#it{c})", HistType::kTH1D, {{200, 0., 10.}});
QAHistosStrangenessTracking.add("hPtCascTracked", "tracked cascades;p_{T} (GeV/#it{c})", HistType::kTH1D, {{200, 0., 10.}});
QAHistosStrangenessTracking.add("hPtVsMassTrkXi", "cascades;p_{T} (GeV/#it{c});m (GeV/#it{c}^2)", HistType::kTH2D, {{200, 0., 10.}, {1000, 1., 3.}});
QAHistosStrangenessTracking.add("hPtVsMassTrkOmega", "cascades;p_{T} (GeV/#it{c});m (GeV/#it{c}^2)", HistType::kTH2D, {{200, 0., 10.}, {1000, 1., 3.}});
QAHistosStrangenessTracking.add("hPtVsMassTrkXiSelected", "cascades;p_{T} (GeV/#it{c});m (GeV/#it{c}^2)", HistType::kTH2D, {{200, 0., 10.}, {1000, 1., 3.}});
QAHistosStrangenessTracking.add("hPtVsMassTrkOmegaSelected", "cascades;p_{T} (GeV/#it{c});m (GeV/#it{c}^2)", HistType::kTH2D, {{200, 0., 10.}, {1000, 1., 3.}});
}
}

Expand Down Expand Up @@ -1016,10 +1020,6 @@ struct strangenessFilter {
QAHistosStrangenessTracking.fill(HIST("hPtCascTracked"), trackCasc.pt());
QAHistosStrangenessTracking.fill(HIST("hStRVsPtTrkCasc"), trackCasc.pt(), RecoDecay::sqrtSumOfSquares(trackCasc.x(), trackCasc.y()));
QAHistosStrangenessTracking.fill(HIST("hMatchChi2TrkCasc"), trackedCascade.matchingChi2());
QAHistosStrangenessTracking.fill(HIST("hMassOmegaVsMatchChi2TrkCasc"), trackedCascade.omegaMass(), trackedCascade.matchingChi2());
QAHistosStrangenessTracking.fill(HIST("hMassXiVsMatchChi2TrkCasc"), trackedCascade.xiMass(), trackedCascade.matchingChi2());
QAHistosStrangenessTracking.fill(HIST("hMassOmegaVsTopChi2TrkCasc"), trackedCascade.omegaMass(), trackedCascade.topologyChi2());
QAHistosStrangenessTracking.fill(HIST("hMassXiVsTopChi2TrkCasc"), trackedCascade.xiMass(), trackedCascade.topologyChi2());

auto trackParCovTrk = getTrackParCov(trackCasc);
o2::base::Propagator::Instance()->propagateToDCA(primaryVertex, trackParCovTrk, bz, 2.f, o2::base::Propagator::MatCorrType::USEMatCorrNONE, &impactParameterTrk);
Expand All @@ -1038,6 +1038,10 @@ struct strangenessFilter {
const auto negTrack = v0.negTrack_as<DaughterTracks>();
const auto posTrack = v0.posTrack_as<DaughterTracks>();

if (!posTrack.hasTPC() || !negTrack.hasTPC()) {
continue;
}

std::array<double, 2> masses{o2::analysis::pdg::MassProton, o2::analysis::pdg::MassPiMinus};
std::array<std::array<float, 3>, 2> momenta;
std::array<double, 2> nsigma;
Expand Down Expand Up @@ -1066,14 +1070,19 @@ struct strangenessFilter {
momenta[1] = {bachelor.px(), bachelor.py(), bachelor.pz()};
masses = {o2::analysis::pdg::MassLambda0, o2::analysis::pdg::MassK0};
const auto massOmega = recalculateMasses ? RecoDecay::m(momenta, masses) : trackedCascade.omegaMass();
if (posTrack.hasTPC() && negTrack.hasTPC()) {
QAHistosStrangenessTracking.fill(HIST("hMassOmegaTrkCasc"), massOmega);
}
QAHistosStrangenessTracking.fill(HIST("hMassOmegaTrkCasc"), massOmega);

masses = {o2::analysis::pdg::MassLambda0, o2::analysis::pdg::MassPi0};
const auto massXi = recalculateMasses ? RecoDecay::m(momenta, masses) : trackedCascade.xiMass();
if (posTrack.hasTPC() && negTrack.hasTPC()) {
QAHistosStrangenessTracking.fill(HIST("hMassXiTrkCasc"), massXi);
}
QAHistosStrangenessTracking.fill(HIST("hMassXiTrkCasc"), massXi);

QAHistosStrangenessTracking.fill(HIST("hMassOmegaVsMatchChi2TrkCasc"), massOmega, trackedCascade.matchingChi2());
QAHistosStrangenessTracking.fill(HIST("hMassXiVsMatchChi2TrkCasc"), massXi, trackedCascade.matchingChi2());
QAHistosStrangenessTracking.fill(HIST("hMassOmegaVsTopChi2TrkCasc"), massOmega, trackedCascade.topologyChi2());
QAHistosStrangenessTracking.fill(HIST("hMassXiVsTopChi2TrkCasc"), massXi, trackedCascade.topologyChi2());

QAHistosStrangenessTracking.fill(HIST("hPtVsMassTrkXi"), trackCasc.pt(), massXi);
QAHistosStrangenessTracking.fill(HIST("hPtVsMassTrkOmega"), trackCasc.pt(), massOmega);

if ((trackCasc.pt() > minPtTrackedCascade) &&
(trackedCascade.matchingChi2() < maxMatchingChi2TrackedCascade) &&
Expand All @@ -1084,12 +1093,14 @@ struct strangenessFilter {
if ((std::abs(massXi - o2::analysis::pdg::MassXiMinus) < massWindowTrackedXi) &&
(std::abs(bachelor.tpcNSigmaPi()) < maxNSigmaBachelorTrackedXi)) {
keepEvent[7] = true;
QAHistosStrangenessTracking.fill(HIST("hPtVsMassTrkXiSelected"), trackCasc.pt(), massXi);
}
// Omega
if ((std::abs(massOmega - o2::analysis::pdg::MassOmegaMinus) < massWindowTrackedOmega) &&
(std::abs(massXi - o2::analysis::pdg::MassXiMinus) >= massWindowXiExclTrackedOmega) &&
(std::abs(bachelor.tpcNSigmaKa()) < maxNSigmaBachelorTrackedOmega)) {
keepEvent[8] = true;
QAHistosStrangenessTracking.fill(HIST("hPtVsMassTrkOmegaSelected"), trackCasc.pt(), massOmega);
}
}
}
Expand Down