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[PWGLF] Added Signal Loss and Event Loss #13338

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dmallick2 merged 1 commit into from
Oct 12, 2025
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[PWGLF] Added Signal Loss and Event Loss #13338

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115 changes: 92 additions & 23 deletions PWGLF/Tasks/Resonances/kstarqa.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -229,22 +229,27 @@ struct Kstarqa {
rEventSelection.add("hVertexZRec", "hVertexZRec", {HistType::kTH1F, {vertexZAxis}});
rEventSelection.add("hMultiplicity", "Multiplicity percentile", kTH1F, {{110, 0, 110}});

rEventSelection.add("hEventCut", "No. of event after cuts", kTH1I, {{20, 0, 20}});
rEventSelection.add("hEventCut", "No. of event after cuts", kTH1D, {{20, 0, 20}});
std::shared_ptr<TH1> hCutFlow = rEventSelection.get<TH1>(HIST("hEventCut"));
hCutFlow->GetXaxis()->SetBinLabel(1, "All Events");
hCutFlow->GetXaxis()->SetBinLabel(2, "|Vz| < cut");
hCutFlow->GetXaxis()->SetBinLabel(3, "sel8");
hCutFlow->GetXaxis()->SetBinLabel(4, "kNoTimeFrameBorder");
hCutFlow->GetXaxis()->SetBinLabel(5, "kNoITSROFrameBorder");
hCutFlow->GetXaxis()->SetBinLabel(6, "kNoSameBunchPileup");
hCutFlow->GetXaxis()->SetBinLabel(7, "kIsGoodITSLayersAll");
hCutFlow->GetXaxis()->SetBinLabel(8, "Occupancy Cut");
hCutFlow->GetXaxis()->SetBinLabel(9, "rctChecker");
hCutFlow->GetXaxis()->SetBinLabel(10, "kIsTriggerTVX");
hCutFlow->GetXaxis()->SetBinLabel(11, "kIsGoodZvtxFT0vsPV");
hCutFlow->GetXaxis()->SetBinLabel(12, "IsINELgt0");
hCutFlow->GetXaxis()->SetBinLabel(13, "isVertexITSTPC");
hCutFlow->GetXaxis()->SetBinLabel(14, "isVertexTOFMatched");
std::vector<std::string> eveCutLabels = {
"All Events",
Form("|Vz| < %.1f", selectionConfig.cutzvertex.value),
"sel8",
"kNoTimeFrameBorder",
"kNoITSROFrameBorder",
"kNoSameBunchPileup",
"kIsGoodITSLayersAll",
Form("Occupancy < %.0f", selectionConfig.configOccCut.value),
"rctChecker",
"kIsTriggerTVX",
"kIsGoodZvtxFT0vsPV",
"IsINELgt0",
"isVertexITSTPC",
"isVertexTOFMatched"};
// assign labels
for (size_t i = 0; i < eveCutLabels.size(); ++i) {
hCutFlow->GetXaxis()->SetBinLabel(i + 1, eveCutLabels[i].c_str());
}

// for primary tracksbinsMultPlot
if (cQAplots) {
Expand Down Expand Up @@ -322,21 +327,34 @@ struct Kstarqa {
hInvMass.add("h1RecMult", "Multiplicity reconstructed", kTH1F, {multiplicityAxis});
hInvMass.add("h1RecMult2", "Multiplicity reconstructed", kTH1F, {multiplicityAxis});
hInvMass.add("h1KSRecsplit", "KS meson Rec split", kTH1F, {{100, 0.0f, 10.0f}});
hInvMass.add("MCcorrections/hSignalLossDenominator", "Kstar generated before event selection", kTH2F, {{ptAxis}, {multiplicityAxis}});
hInvMass.add("MCcorrections/hSignalLossNumerator", "Kstar generated after event selection", kTH2F, {{ptAxis}, {multiplicityAxis}});
// hInvMass.add("hAllGenCollisionsImpact", "All generated collisions vs impact parameter", kTH1F, {multiplicityAxis});
hInvMass.add("hAllGenCollisions", "All generated events", kTH1F, {multiplicityAxis});
hInvMass.add("hAllGenCollisions1Rec", "All gen events with at least one rec event", kTH1F, {multiplicityAxis});
hInvMass.add("hAllKstarGenCollisisons", "All generated Kstar in events with rapidity in 0.5", kTH2F, {{multiplicityAxis}, {ptAxis}});
hInvMass.add("hAllKstarGenCollisisons1Rec", "All generated Kstar in events with at least one rec event in rapidity in 0.5", kTH2F, {{multiplicityAxis}, {ptAxis}});
hInvMass.add("hAllRecCollisions", "All reconstructed events", kTH1F, {multiplicityAxis});
hInvMass.add("hAllRecCollisionsCalib", "All reconstructed events", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/hImpactParameterRec", "Impact parameter in reconstructed MC", kTH1F, {impactParAxis});
hInvMass.add("MCcorrections/MultiplicityRec", "Multiplicity in generated MC with at least 1 reconstruction", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/MultiplicityRec2", "Multiplicity in reconstructed MC", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/hImpactParameterGen", "Impact parameter in generated MC", kTH1F, {impactParAxis});
hInvMass.add("MCcorrections/MultiplicityGen", "Multiplicity in generated MC", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/hImpactParametervsMultiplicity", "Impact parameter vs multiplicity in reconstructed MC", kTH2F, {{impactParAxis}, {multiplicityAxis}});

if (doprocessEvtLossSigLossMC || doprocessEvtLossSigLossMCPhi) {
hInvMass.add("MCcorrections/hSignalLossDenominator", "Kstar generated before event selection", kTH2F, {{ptAxis}, {multiplicityAxis}});
hInvMass.add("MCcorrections/hSignalLossNumerator", "Kstar generated after event selection", kTH2F, {{ptAxis}, {multiplicityAxis}});
hInvMass.add("MCcorrections/hImpactParameterRec", "Impact parameter in reconstructed MC", kTH1F, {impactParAxis});
hInvMass.add("MCcorrections/MultiplicityRec", "Multiplicity in generated MC with at least 1 reconstruction", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/MultiplicityRec2", "Multiplicity in reconstructed MC", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/hImpactParameterGen", "Impact parameter in generated MC", kTH1F, {impactParAxis});
hInvMass.add("MCcorrections/MultiplicityGen", "Multiplicity in generated MC", kTH1F, {multiplicityAxis});
hInvMass.add("MCcorrections/hImpactParametervsMultiplicity", "Impact parameter vs multiplicity in reconstructed MC", kTH2F, {{impactParAxis}, {multiplicityAxis}});
}

// Signal Loss & Event Loss in Light Ion Collisions
if (doprocessEvtLossSigLossLightIonMC) {
hInvMass.add("MCcorrections/hImpactParameterGen", "Impact parameter of generated MC events", kTH1F, {impactParAxis});
hInvMass.add("MCcorrections/hImpactParameterRec", "Impact parameter of selected MC events", kTH1F, {impactParAxis});
hInvMass.add("MCcorrections/hImpactParvsCentrRec", "Impact parameter of selected MC events vs centrality", kTH2F, {{multiplicityAxis}, impactParAxis});
hInvMass.add("MCcorrections/hKstarGenBeforeEvtSel", "K*0 before event selections", kTH2F, {ptAxis, impactParAxis});
hInvMass.add("MCcorrections/hKstarGenAfterEvtSel", "K*0 after event selections", kTH2F, {ptAxis, impactParAxis});
}

rEventSelection.add("tracksCheckData", "No. of events in the data", kTH1I, {{10, 0, 10}});
rEventSelection.add("eventsCheckGen", "No. of events in the generated MC", kTH1I, {{10, 0, 10}});
rEventSelection.add("recMCparticles", "No. of events in the reconstructed MC", kTH1I, {{20, 0, 20}});
Expand Down Expand Up @@ -2110,6 +2128,57 @@ struct Kstarqa {
}
PROCESS_SWITCH(Kstarqa, processEvtLossSigLossMC, "Process Signal Loss, Event Loss", false);

void processEvtLossSigLossLightIonMC(aod::McCollisions::iterator const& mcCollision, aod::McParticles const& mcParticles, const soa::SmallGroups<EventCandidatesMC>& recCollisions)
{

// Event loss estimation
auto impactPar = mcCollision.impactParameter();
hInvMass.fill(HIST("MCcorrections/hImpactParameterGen"), impactPar);

bool isSelectedEvent = false;
auto centrality = -999.;
for (const auto& RecCollision : recCollisions) {
if (!RecCollision.has_mcCollision())
continue;
if (!selectionEvent(RecCollision, false)) // don't fill event cut histogram
continue;

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

isSelectedEvent = true;
}

if (isSelectedEvent) {
hInvMass.fill(HIST("MCcorrections/hImpactParameterRec"), impactPar);
hInvMass.fill(HIST("MCcorrections/hImpactParvsCentrRec"), centrality, impactPar);
}

// Generated MC
for (const auto& mcPart : mcParticles) {

if (std::abs(mcPart.y()) >= selectionConfig.rapidityMotherData || std::abs(mcPart.pdgCode()) != o2::constants::physics::kK0Star892)
continue;

// signal loss estimation
hInvMass.fill(HIST("MCcorrections/hKstarGenBeforeEvtSel"), mcPart.pt(), impactPar);
if (isSelectedEvent) {
// signal loss estimation
hInvMass.fill(HIST("MCcorrections/hKstarGenAfterEvtSel"), mcPart.pt(), impactPar);
}
} // end loop on gen particles
}
PROCESS_SWITCH(Kstarqa, processEvtLossSigLossLightIonMC, "Process Signal Loss, Event Loss for Kstar in Light Ion", false);

void processEvtLossSigLossMCPhi(EventMCGenerated::iterator const& mcCollision, aod::McParticles const& mcParticles, const soa::SmallGroups<EventCandidatesMC>& recCollisions)
// void processEvtLossSigLossMCPhi(aod::McCollisions::iterator const& mcCollision, aod::McParticles const& mcParticles, const soa::SmallGroups<EventCandidatesMC>& recCollisions)
{
Expand Down
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