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[PWGLF] Added event selection in event and signal loss calculation #14104

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dmallick2 merged 1 commit into from
Dec 7, 2025
Merged

[PWGLF] Added event selection in event and signal loss calculation #14104

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47 changes: 29 additions & 18 deletions PWGLF/Tasks/Resonances/kstar892LightIon.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -160,8 +160,6 @@ struct Kstar892LightIon {
ConfigurableAxis binsImpactPar{"binsImpactPar", {100, 0, 25}, "Binning of the impact parameter axis"};
ConfigurableAxis axisNch{"axisNch", {100, 0.0f, 100.0f}, "Number of charged particles in |y| < 0.5"};

Configurable<bool> indexCheck{"indexCheck", true, "Check if track2id < track1id matters"}; // check and remove

enum MultEstimator {
kFT0M,
kFT0A,
Expand Down Expand Up @@ -199,28 +197,25 @@ struct Kstar892LightIon {
hEventSelection.add("hOccupancy", "Occupancy distribution", kTH1F, {{1000, 0, 15000}});

hEventSelection.add("hEventCut", "No. of event after cuts", kTH1D, {{20, 0, 20}});
std::shared_ptr<TH1> hCutFlow = hEventSelection.get<TH1>(HIST("hEventCut"));

auto check = [](bool enabled) { return enabled ? "" : " #otimes"; }; // check if a cut is enabled and put #otimes beside that label if not enabled

std::vector<std::string> eveCutLabels = {
"All Events",
Form("|Vz| < %.1f", selectionConfig.cfgVrtxZCut.value),
"sel8",
std::string("kNoTimeFrameBorder") + check(selectionConfig.isNoTimeFrameBorder.value),
std::string("kNoITSROFrameBorder") + check(selectionConfig.isNoITSROFrameBorder.value),
std::string("kIsTriggerTVX") + check(selectionConfig.isTriggerTVX.value),
std::string("kNoSameBunchPileup") + check(selectionConfig.isNoSameBunchPileup.value),
std::string("kIsGoodITSLayersAll") + check(selectionConfig.isGoodITSLayersAll.value),
std::string("kNoCollInTimeRangeStandard") + check(selectionConfig.isNoCollInTimeRangeStandard.value),
Form("Occupancy < %.0f%s", selectionConfig.cfgOccCut.value, check(selectionConfig.isApplyOccCut.value)),
std::string("rctChecker") + check(rctCut.requireRCTFlagChecker.value),
std::string("kIsTriggerTVX") + check(selectionConfig.isTriggerTVX.value),
std::string("kIsGoodZvtxFT0vsPV") + check(selectionConfig.isGoodZvtxFT0vsPV.value),
std::string("isVertexITSTPC") + check(selectionConfig.isVertexITSTPC.value),
std::string("isVertexTOFMatched") + check(selectionConfig.isVertexTOFMatched.value)};
// assign labels
for (size_t i = 0; i < eveCutLabels.size(); ++i) {
hCutFlow->GetXaxis()->SetBinLabel(i + 1, eveCutLabels[i].c_str());
hEventSelection.get<TH1>(HIST("hEventCut"))->GetXaxis()->SetBinLabel(i + 1, eveCutLabels[i].c_str());
}

// for primary tracksbinsCentPlot
Expand Down Expand Up @@ -280,6 +275,7 @@ struct Kstar892LightIon {

// MC histograms
if (doprocessGen) {
hMC.add("Gen/hGenNo", "MC Event statistics", kTH1F, {{10, 0.0f, 10.0f}});
hMC.add("Gen/hk892GenpT", "pT distribution of True MC K(892)0", kTH2F, {ptAxis, centralityAxis});
hMC.add("Gen/hk892GenpT2", "pT distribution of True MC K(892)0", kTH2F, {ptAxis, centralityAxis});
hMC.add("Gen/h1genmass", "Invariant mass of generated kstar meson", kTH1F, {invmassAxis});
Expand Down Expand Up @@ -351,32 +347,32 @@ struct Kstar892LightIon {
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 4);

if (selectionConfig.isNoSameBunchPileup && (!collision.selection_bit(aod::evsel::kNoSameBunchPileup)))
if (selectionConfig.isTriggerTVX && !collision.selection_bit(aod::evsel::kIsTriggerTVX))
return false;
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 5);

if (selectionConfig.isGoodITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll))
if (selectionConfig.isNoSameBunchPileup && (!collision.selection_bit(aod::evsel::kNoSameBunchPileup)))
return false;
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 6);

if (selectionConfig.isNoCollInTimeRangeStandard && (!collision.selection_bit(o2::aod::evsel::kNoCollInTimeRangeStandard)))
if (selectionConfig.isGoodITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll))
return false;
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 7);

if (selectionConfig.isApplyOccCut && (std::abs(collision.trackOccupancyInTimeRange()) > selectionConfig.cfgOccCut))
if (selectionConfig.isNoCollInTimeRangeStandard && (!collision.selection_bit(o2::aod::evsel::kNoCollInTimeRangeStandard)))
return false;
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 8);

if (rctCut.requireRCTFlagChecker && !rctChecker(collision))
if (selectionConfig.isApplyOccCut && (std::abs(collision.trackOccupancyInTimeRange()) > selectionConfig.cfgOccCut))
return false;
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 9);

if (selectionConfig.isTriggerTVX && !collision.selection_bit(aod::evsel::kIsTriggerTVX))
if (rctCut.requireRCTFlagChecker && !rctChecker(collision))
return false;
if (fillHist)
hEventSelection.fill(HIST("hEventCut"), 10);
Expand Down Expand Up @@ -1048,6 +1044,9 @@ struct Kstar892LightIon {
centrality = -1.0;

for (const auto& collision : collisions) {

hMC.fill(HIST("Gen/hGenNo"), 0.5);

if (!selectionEvent(collision, false)) { // don't fill event cut histogram
continue;
}
Expand Down Expand Up @@ -1084,6 +1083,7 @@ struct Kstar892LightIon {
if (!evtReconstructedAndSelected) { // Check that the event is reconstructed and that the reconstructed events pass the selection
return;
}
hMC.fill(HIST("Gen/hGenNo"), 1.5);

hMC.fill(HIST("Gen/hAllGenCollisions1Rec"), centrality);

Expand Down Expand Up @@ -1186,10 +1186,7 @@ struct Kstar892LightIon {
continue;
}

if (track1.index() == track2.index())
continue;

if (indexCheck && (track2.index() < track1.index()))
if (track1.index() <= track2.index())
continue;

if (!selectionPair(track1, track2)) {
Expand Down Expand Up @@ -1407,7 +1404,21 @@ struct Kstar892LightIon {

float centrality = 100.5f;
for (auto const& collision : collisions) {
centrality = collision.centFT0M();

if (!selectionEvent(collision, false)) // don't fill event cut histogram
continue;

if (selectCentEstimator == kFT0M) {
centrality = collision.centFT0M();
} else if (selectCentEstimator == kFT0A) {
centrality = collision.centFT0A();
} else if (selectCentEstimator == kFT0C) {
centrality = collision.centFT0C();
} else if (selectCentEstimator == kFV0A) {
centrality = collision.centFV0A();
} else {
centrality = collision.centFT0M(); // default
}
}

hMC.fill(HIST("CorrFactors/hCentralityVsMultMC"), centrality, mcCollision.multMCNParticlesEta08());
Expand Down
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