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[PWGLF] Exchange Cent. for Nch in MC closure #14135

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Merged
maciacco merged 1 commit into from
Dec 9, 2025
Merged

[PWGLF] Exchange Cent. for Nch in MC closure #14135

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64 changes: 13 additions & 51 deletions PWGLF/Tasks/Nuspex/piKpRAA.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -556,9 +556,9 @@ struct PiKpRAA {
registry.add("MCclosure_PtMCKaVsNchMC", "All Generated Events 4 MC closure;;Gen. Nch;", kTH2F, {{axisPt, {nBinsNch, minNch, maxNch}}});
registry.add("MCclosure_PtMCPrVsNchMC", "All Generated Events 4 MC closure;;Gen. Nch;", kTH2F, {{axisPt, {nBinsNch, minNch, maxNch}}});

registry.add("MCclosure_PtPiVsCent", "Gen Evts With at least one Rec. Coll. + Sel. criteria 4 MC closure;;Gen. Nch;", kTH2F, {axisPt, axisCent});
registry.add("MCclosure_PtKaVsCent", "Gen Evts With at least one Rec. Coll. + Sel. criteria 4 MC closure;;Gen. Nch;", kTH2F, {axisPt, axisCent});
registry.add("MCclosure_PtPrVsCent", "Gen Evts With at least one Rec. Coll. + Sel. criteria 4 MC closure;;Gen. Nch;", kTH2F, {axisPt, axisCent});
registry.add("MCclosure_PtPiVsNchMC", "Gen Evts With at least one Rec. Coll. + Sel. criteria 4 MC closure;;Gen. Nch;", kTH2F, {{axisPt, {nBinsNch, minNch, maxNch}}});
registry.add("MCclosure_PtKaVsNchMC", "Gen Evts With at least one Rec. Coll. + Sel. criteria 4 MC closure;;Gen. Nch;", kTH2F, {{axisPt, {nBinsNch, minNch, maxNch}}});
registry.add("MCclosure_PtPrVsNchMC", "Gen Evts With at least one Rec. Coll. + Sel. criteria 4 MC closure;;Gen. Nch;", kTH2F, {{axisPt, {nBinsNch, minNch, maxNch}}});
}

LOG(info) << "\tccdbNoLaterThan=" << ccdbNoLaterThan.value;
Expand Down Expand Up @@ -1508,8 +1508,8 @@ struct PiKpRAA {

if (isPrimary) {
if (particle.pdgCode() == PDG_t::kPiPlus || particle.pdgCode() == PDG_t::kPiMinus) {
registry.fill(HIST("PtPiVsCentMC_WithRecoEvt"), particle.pt(), centrality);
registry.fill(HIST("PtPiVsNchMC_WithRecoEvt"), particle.pt(), nChMC);
registry.fill(HIST("PtPiVsCentMC_WithRecoEvt"), particle.pt(), centrality); // Denominator of tracking efficiency
registry.fill(HIST("PtPiVsNchMC_WithRecoEvt"), particle.pt(), nChMC); // Numerator of signal loss
} else if (particle.pdgCode() == PDG_t::kKPlus || particle.pdgCode() == PDG_t::kKMinus) {
registry.fill(HIST("PtKaVsCentMC_WithRecoEvt"), particle.pt(), centrality);
registry.fill(HIST("PtKaVsNchMC_WithRecoEvt"), particle.pt(), nChMC);
Expand Down Expand Up @@ -1716,16 +1716,16 @@ struct PiKpRAA {
}

if (isPi && !isKa && !isPr) {
registry.fill(HIST("PtPiVsCent_WithRecoEvt"), track.pt(), centrality);
registry.fill(HIST("MCclosure_PtPiVsCent"), track.pt(), centrality);
registry.fill(HIST("PtPiVsCent_WithRecoEvt"), track.pt(), centrality); // Numerator of tracking efficiency
registry.fill(HIST("MCclosure_PtPiVsNchMC"), track.pt(), nChMC);
}
if (isKa && !isPi && !isPr) {
registry.fill(HIST("PtKaVsCent_WithRecoEvt"), track.pt(), centrality);
registry.fill(HIST("MCclosure_PtKaVsCent"), track.pt(), centrality);
registry.fill(HIST("MCclosure_PtKaVsNchMC"), track.pt(), nChMC);
}
if (isPr && !isPi && !isKa) {
registry.fill(HIST("PtPrVsCent_WithRecoEvt"), track.pt(), centrality);
registry.fill(HIST("MCclosure_PtPrVsCent"), track.pt(), centrality);
registry.fill(HIST("MCclosure_PtPrVsNchMC"), track.pt(), nChMC);
}
registry.fill(HIST("PtResolution"), particle.pt(), (track.pt() - particle.pt()) / particle.pt());
} // Loop over reconstructed tracks
Expand All @@ -1738,52 +1738,11 @@ struct PiKpRAA {
// Therefore it is expressed as a function of the generated pT and the generated Nch in ∣eta∣ < 0.8
//---------------------------

//---------------------------
// To perform MC closure
// True Pt vs Generated Nch
//---------------------------
for (const auto& particle : mcParticles) {
if (particle.eta() < v0Selections.minEtaDaughter || particle.eta() > v0Selections.maxEtaDaughter)
continue;

if (particle.pt() < v0Selections.minPt || particle.pt() > v0Selections.maxPt)
continue;

auto charge{0.};
// Get the MC particle
auto* pdgParticle = pdg->GetParticle(particle.pdgCode());
if (pdgParticle != nullptr) {
charge = pdgParticle->Charge();
} else {
continue;
}

// Is it a charged particle?
if (std::abs(charge) < kMinCharge)
continue;

// Is it a primary particle?
bool isPrimary{true};
if (!particle.isPhysicalPrimary())
isPrimary = false;

if (isPrimary) {
if (particle.pdgCode() == PDG_t::kPiPlus || particle.pdgCode() == PDG_t::kPiMinus) {
registry.fill(HIST("MCclosure_PtMCPiVsNchMC"), particle.pt(), nChMC);
} else if (particle.pdgCode() == PDG_t::kKPlus || particle.pdgCode() == PDG_t::kKMinus) {
registry.fill(HIST("MCclosure_PtMCKaVsNchMC"), particle.pt(), nChMC);
} else if (particle.pdgCode() == PDG_t::kProton || particle.pdgCode() == PDG_t::kProtonBar) {
registry.fill(HIST("MCclosure_PtMCPrVsNchMC"), particle.pt(), nChMC);
} else {
continue;
}
}
} // Loop over generated particles per Gen Event 4 MC closure

//---------------------------
// Generated Pt spectra of all INEL > 0 Generated evets
// irrespective of whether there is a reconstructed collision
// This is used for the denominator of the signal loss correction
// Also for MC closure: True Pt vs Generated Nch
//---------------------------
for (const auto& particle : mcParticles) {
if (particle.eta() < v0Selections.minEtaDaughter || particle.eta() > v0Selections.maxEtaDaughter)
Expand Down Expand Up @@ -1813,10 +1772,13 @@ struct PiKpRAA {
if (isPrimary) {
if (particle.pdgCode() == PDG_t::kPiPlus || particle.pdgCode() == PDG_t::kPiMinus) {
registry.fill(HIST("PtPiVsNchMC_AllGen"), particle.pt(), nChMC);
registry.fill(HIST("MCclosure_PtMCPiVsNchMC"), particle.pt(), nChMC);
} else if (particle.pdgCode() == PDG_t::kKPlus || particle.pdgCode() == PDG_t::kKMinus) {
registry.fill(HIST("PtKaVsNchMC_AllGen"), particle.pt(), nChMC);
registry.fill(HIST("MCclosure_PtMCKaVsNchMC"), particle.pt(), nChMC);
} else if (particle.pdgCode() == PDG_t::kProton || particle.pdgCode() == PDG_t::kProtonBar) {
registry.fill(HIST("PtPrVsNchMC_AllGen"), particle.pt(), nChMC);
registry.fill(HIST("MCclosure_PtMCPrVsNchMC"), particle.pt(), nChMC);
} else {
continue;
}
Expand Down
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