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[PWGCF] Update the cascades efficiency in cascDiHadronCorr.cxx #16815

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Merged
wenyaCern merged 2 commits into from
Jun 25, 2026
+22 −10
Merged

[PWGCF] Update the cascades efficiency in cascDiHadronCorr.cxx #16815

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fuchuncui Jun 25, 2026
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fuchuncui Jun 25, 2026
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32 changes: 22 additions & 10 deletions PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -424,7 +424,11 @@ struct CascDiHadronCorr {
same.setObject(new CorrelationContainer("sameEvent", "sameEvent", corrAxis, effAxis, userAxis));
mixed.setObject(new CorrelationContainer("mixedEvent", "mixedEvent", corrAxis, effAxis, userAxis));

validCollisions.resize(registry.get<TH1>(HIST("Nch"))->GetNbinsX() * registry.get<TH1>(HIST("zVtx"))->GetNbinsX());
o2::framework::AxisSpec axisMult = axisMultiplicity;
o2::framework::AxisSpec axisVtx = axisVertex;
int nMultBins = axisMult.binEdges.size() - 1;
int nVtxBins = axisVtx.binEdges.size() - 1;
validCollisions.resize(nMultBins * nVtxBins);

LOGF(info, "End of init");
}
Expand Down Expand Up @@ -748,6 +752,8 @@ struct CascDiHadronCorr {
{
float triggerWeight = 1.0f;
float associatedWeight = 1.0f;
if (currentCollision.assocParticles.size() == 0)
return;
// loop over all validCollisions in buffer
for (const auto& collision : validCollisions[bin]) {
double fSampleIndex = gRandom->Uniform(0, cfgSampleSize);
Expand All @@ -756,7 +762,7 @@ struct CascDiHadronCorr {
if (mEfficiency) {
efficiencyAssociatedCache.clear();
efficiencyAssociatedCache.reserve(collision.assocParticles.size());
for (const auto& track2 : currentCollision.assocParticles) {
for (const auto& track2 : collision.assocParticles) {
float weff = 1.;
getEfficiencyCorrection(weff, track2.eta, track2.pt, posZ);
efficiencyAssociatedCache.push_back(weff);
Expand Down Expand Up @@ -794,6 +800,8 @@ struct CascDiHadronCorr {
{
float triggerWeight = 1.0f;
float associatedWeight = 1.0f;
if (currentCollision.assocParticles.size() == 0)
return;
// loop over all validCollisions in buffer
for (const auto& collision : validCollisions[bin]) {
double fSampleIndex = gRandom->Uniform(0, cfgSampleSize);
Expand All @@ -802,7 +810,7 @@ struct CascDiHadronCorr {
if (mEfficiency) {
efficiencyAssociatedCache.clear();
efficiencyAssociatedCache.reserve(collision.assocParticles.size());
for (const auto& track2 : currentCollision.assocParticles) {
for (const auto& track2 : collision.assocParticles) {
float weff = 1.;
getEfficiencyCorrection(weff, track2.eta, track2.pt, posZ);
efficiencyAssociatedCache.push_back(weff);
Expand All @@ -829,9 +837,9 @@ struct CascDiHadronCorr {
float deltaEta = track1.eta() - track2.eta;

if (cfgOutputXi)
same->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, track1.mXi(), eventWeight * triggerWeight * associatedWeight);
mixed->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, track1.mXi(), eventWeight * triggerWeight * associatedWeight);
if (cfgOutputOmega)
same->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, track1.mOmega(), eventWeight * triggerWeight * associatedWeight);
mixed->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, track1.mOmega(), eventWeight * triggerWeight * associatedWeight);
registry.fill(HIST("deltaEta_deltaPhi_mixed"), deltaPhi, deltaEta, eventWeight * triggerWeight * associatedWeight);
}
}
Expand Down Expand Up @@ -1592,7 +1600,7 @@ struct CascDiHadronCorr {
}
}

void processMCEfficiency(FilteredMcCollisions::iterator const& mcCollision, soa::SmallGroups<soa::Join<aod::McCollisionLabels, aod::Collisions>> const& collisions, soa::Join<aod::CascDatas, aod::McCascLabels> const& Cascades, FilteredMcParticles const& mcParticles)
void processMCEfficiency(FilteredMcCollisions::iterator const& mcCollision, soa::SmallGroups<soa::Join<aod::McCollisionLabels, aod::Collisions>> const& collisions, soa::Join<aod::CascDatas, aod::McCascLabels> const& Cascades, FilteredMcParticles const& mcParticles, DaughterTracks const&)
{
registry.fill(HIST("MCEffeventcount"), 0.5);
if (cfgSelCollByNch && (mcParticles.size() < cfgCutMultMin || mcParticles.size() >= cfgCutMultMax)) {
Expand All @@ -1601,8 +1609,10 @@ struct CascDiHadronCorr {
// Primaries
for (const auto& mcParticle : mcParticles) {
if (mcParticle.isPhysicalPrimary()) {
registry.fill(HIST("MCEffeventcount"), 1.5);
same->getTrackHistEfficiency()->Fill(CorrelationContainer::MC, mcParticle.eta(), mcParticle.pt(), getSpecies(mcParticle.pdgCode()), 0., mcCollision.posZ());
if ((cfgOutputXi && getSpecies(mcParticle.pdgCode()) == getSpecies(PDG_t::kXiMinus)) || (cfgOutputOmega && getSpecies(mcParticle.pdgCode()) == getSpecies(PDG_t::kOmegaMinus))) {
registry.fill(HIST("MCEffeventcount"), 1.5);
same->getTrackHistEfficiency()->Fill(CorrelationContainer::MC, mcParticle.eta(), mcParticle.pt(), getSpecies(mcParticle.pdgCode()), 0., mcCollision.posZ());
}
}
}
for (const auto& collision : collisions) {
Expand All @@ -1613,14 +1623,16 @@ struct CascDiHadronCorr {
}

for (const auto& casc : groupedCascades) {
if (!cascSelected(casc, collision.posX(), collision.posY(), collision.posZ()))
continue;
if (casc.has_mcParticle()) {
auto mcParticle = casc.mcParticle();
auto mcParticle = casc.mcParticle_as<FilteredMcParticles>();
if (mcParticle.isPhysicalPrimary()) {
registry.fill(HIST("MCEffeventcount"), 2.5);
same->getTrackHistEfficiency()->Fill(CorrelationContainer::RecoPrimaries, mcParticle.eta(), mcParticle.pt(), getSpecies(mcParticle.pdgCode()), 0., mcCollision.posZ());
}
registry.fill(HIST("MCEffeventcount"), 3.5);
same->getTrackHistEfficiency()->Fill(CorrelationContainer::RecoAll, mcParticle.eta(), mcParticle.pt(), getSpecies(mcParticle.pdgCode()), 0., mcCollision.posZ());
same->getTrackHistEfficiency()->Fill(CorrelationContainer::RecoAll, mcParticle.eta(), mcParticle.pt(), (cfgOutputXi * getSpecies(PDG_t::kXiMinus) + cfgOutputOmega * getSpecies(PDG_t::kOmegaMinus)), 0., mcCollision.posZ());
} else {
// fake casc
registry.fill(HIST("MCEffeventcount"), 4.5);
Expand Down
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