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[PWGCF] FemtoUniverse -- corrected mc truth filling for the secondary contamination estimation #11987

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Merged
zchochul merged 3 commits into from
Jul 9, 2025
Merged

[PWGCF] FemtoUniverse -- corrected mc truth filling for the secondary contamination estimation #11987

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ef8d9ee
adding secondary contamination calculations for p-phi analysis
Jul 7, 2025
f515652
fix: correcting mc truth filling for the secondary contamination esti…
Jul 9, 2025
4fc3541
Merge branch 'master' into 09.07
zchochul Jul 9, 2025
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105 changes: 60 additions & 45 deletions PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackPhi.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -16,29 +16,31 @@
/// \author Anton Riedel, TU München, anton.riedel@tum.de
/// \author Zuzanna Chochulska, WUT Warsaw & CTU Prague, zchochul@cern.ch

#include <vector>
#include <string>
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseContainer.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseDetaDphiStar.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseEfficiencyCorrection.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseEventHisto.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniversePairCleaner.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseParticleHisto.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseTrackSelection.h"
#include "PWGCF/FemtoUniverse/DataModel/FemtoDerived.h"

#include "Framework/ASoAHelpers.h"
#include "Framework/AnalysisTask.h"
#include "Framework/runDataProcessing.h"
#include "Framework/HistogramRegistry.h"
#include "Framework/ASoAHelpers.h"
#include "Framework/O2DatabasePDGPlugin.h"
#include "Framework/runDataProcessing.h"
#include "ReconstructionDataFormats/PID.h"

#include "PWGCF/FemtoUniverse/DataModel/FemtoDerived.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseParticleHisto.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseEventHisto.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniversePairCleaner.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseContainer.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseDetaDphiStar.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseTrackSelection.h"
#include "PWGCF/FemtoUniverse/Core/FemtoUniverseEfficiencyCalculator.h"
#include <TFile.h>
#include <TH1.h>

#include <string>
#include <vector>

using namespace o2;
using namespace o2::analysis::femto_universe;
using namespace o2::analysis::femto_universe::efficiency;
using namespace o2::analysis::femto_universe::efficiency_correction;
using namespace o2::framework;
using namespace o2::framework::expressions;
using namespace o2::soa;
Expand Down Expand Up @@ -187,8 +189,10 @@ struct FemtoUniversePairTaskTrackPhi {

ColumnBinningPolicy<aod::collision::PosZ, aod::femtouniversecollision::MultNtr> colBinning{{ConfBinsVtx, ConfBinsMult}, true};

EfficiencyConfigurableGroup effConfGroup;
EfficiencyCalculator<TH1> efficiencyCalculator{&effConfGroup};
HistogramRegistry effCorrRegistry{"EfficiencyCorrection", {}, OutputObjHandlingPolicy::AnalysisObject};

EffCorConfigurableGroup effCorConfGroup;
EfficiencyCorrection effCorrection{&effCorConfGroup};

float weight = 1;

Expand Down Expand Up @@ -372,6 +376,12 @@ struct FemtoUniversePairTaskTrackPhi {
}
}

/// @returns 1 if positive, -1 if negative, 0 if zero
auto sign(auto number) -> int8_t
{
return (number > 0) - (number < 0);
}

void init(InitContext&)
{
if (ConfIsMC) {
Expand All @@ -383,7 +393,14 @@ struct FemtoUniversePairTaskTrackPhi {
registryMCpT.add("MCReco/C_p_pT", "; #it{p_T} (GeV/#it{c}); Counts", kTH1F, {{100, 0, 10}});
registryMCpT.add("MCReco/NC_p_pT", "; #it{p_T} (GeV/#it{c}); Counts", kTH1F, {{100, 0, 10}});
}
efficiencyCalculator.init();

effCorrection.init(
&effCorrRegistry,
{
static_cast<framework::AxisSpec>(ConfBinsTempFitVarpT),
{ConfBinsEta, -1, 1},
ConfBinsMult,
});

eventHisto.init(&qaRegistry);
qaRegistry.add("PhiDaugh_pos/nSigmaTPC", "; #it{p} (GeV/#it{c}); n#sigma_{TPC}", kTH2F, {{100, 0, 10}, {200, -4.975, 5.025}});
Expand Down Expand Up @@ -467,7 +484,7 @@ struct FemtoUniversePairTaskTrackPhi {
}
}

template <typename PartitionType, typename PartType, typename MCParticles = std::nullptr_t>
template <bool isMC, typename PartitionType, typename PartType, typename MCParticles = std::nullptr_t>
void doSameEvent(PartitionType groupPartsTrack, PartitionType groupPartsPhi, PartType parts, float magFieldTesla, int multCol, [[maybe_unused]] MCParticles mcParts = nullptr)
{
for (auto const& phicandidate : groupPartsPhi) {
Expand All @@ -493,6 +510,10 @@ struct FemtoUniversePairTaskTrackPhi {
qaRegistry.fill(HIST("PhiDaugh_neg/hDCAxy"), negChild.p(), negChild.tempFitVar());

trackHistoPartPhi.fillQA<false, false>(phicandidate);
if constexpr (isMC) {
// reco
effCorrection.fillRecoHist<ParticleNo::ONE, FilteredFDCollisions>(phicandidate, 333);
}
}

for (auto const& track : groupPartsTrack) {
Expand Down Expand Up @@ -529,6 +550,10 @@ struct FemtoUniversePairTaskTrackPhi {
qaRegistry.fill(HIST("Hadron_neg/nSigmaTOFPr"), track.p(), tofNSigmaPr);
}
trackHistoPartTrack.fillQA<false, false>(track);

if constexpr (isMC) {
effCorrection.fillRecoHist<ParticleNo::TWO, FilteredFDCollisions>(track, ConfTrackPDGCode);
}
}

/// Now build the combinations
Expand Down Expand Up @@ -556,13 +581,8 @@ struct FemtoUniversePairTaskTrackPhi {
if (!pairCleaner.isCleanPair(track, phicandidate, parts)) {
continue;
}

weight = efficiencyCalculator.getWeight(ParticleNo::ONE, phicandidate.pt()) * efficiencyCalculator.getWeight(ParticleNo::TWO, track.pt());

if constexpr (std::is_same<PartType, FemtoRecoParticles>::value)
sameEventCont.setPair<true>(track, phicandidate, multCol, ConfUse3D, weight);
else
sameEventCont.setPair<false>(track, phicandidate, multCol, ConfUse3D, weight);
weight = effCorrection.getWeight<FilteredFDCollisions>(ParticleNo::ONE, phicandidate) * effCorrection.getWeight<FilteredFDCollisions>(ParticleNo::TWO, track);
sameEventCont.setPair<isMC>(track, phicandidate, multCol, ConfUse3D, weight);
}

// // Used for better fitting of invariant mass background.
Expand Down Expand Up @@ -592,7 +612,7 @@ struct FemtoUniversePairTaskTrackPhi {
// }
}

template <typename PartitionType, typename PartType, typename MCParticles = std::nullptr_t>
template <bool isMC, typename PartitionType, typename PartType, typename MCParticles = std::nullptr_t>
void doMixedEvent(PartitionType groupPartsTrack, PartitionType groupPartsPhi, PartType parts, float magFieldTesla, int multCol, [[maybe_unused]] MCParticles mcParts = nullptr)
{
for (auto const& [track, phicandidate] : combinations(CombinationsFullIndexPolicy(groupPartsTrack, groupPartsPhi))) {
Expand All @@ -612,31 +632,23 @@ struct FemtoUniversePairTaskTrackPhi {
continue;
}
}

weight = efficiencyCalculator.getWeight(ParticleNo::ONE, phicandidate.pt()) * efficiencyCalculator.getWeight(ParticleNo::TWO, track.pt());

if constexpr (std::is_same<PartType, FemtoRecoParticles>::value)
mixedEventCont.setPair<true>(track, phicandidate, multCol, ConfUse3D, weight);
else
mixedEventCont.setPair<false>(track, phicandidate, multCol, ConfUse3D, weight);
weight = effCorrection.getWeight<FilteredFDCollisions>(ParticleNo::ONE, phicandidate) * effCorrection.getWeight<FilteredFDCollisions>(ParticleNo::TWO, track);
mixedEventCont.setPair<isMC>(track, phicandidate, multCol, ConfUse3D, weight);
}
}

void processSameEvent(FilteredFDCollision const& col, FilteredFemtoFullParticles const& parts)
{
auto thegroupPartsTrack = partsTrack->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
auto thegroupPartsPhi = partsPhi->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
// auto thegroupPartsPhiDaugh = partsPhiDaugh->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
// auto thegroupPartsKaons = partsKaons->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
eventHisto.fillQA(col);
doSameEvent(thegroupPartsTrack, thegroupPartsPhi, parts, col.magField(), col.multNtr());
doSameEvent<false>(thegroupPartsTrack, thegroupPartsPhi, parts, col.magField(), col.multNtr());
}
PROCESS_SWITCH(FemtoUniversePairTaskTrackPhi, processSameEvent, "Enable processing same event", true);

void processMixedEvent(FilteredFDCollisions const& cols, FilteredFemtoFullParticles const& parts)
{
for (auto const& [collision1, collision2] : soa::selfCombinations(colBinning, 5, -1, cols, cols)) {

const int multiplicityCol = collision1.multNtr();
mixQaRegistry.fill(HIST("MixingQA/hMECollisionBins"), colBinning.getBin({collision1.posZ(), multiplicityCol}));

Expand All @@ -650,20 +662,19 @@ struct FemtoUniversePairTaskTrackPhi {
continue;
}

doMixedEvent(groupPartsTrack, groupPartsPhi, parts, magFieldTesla1, multiplicityCol);
doMixedEvent<false>(groupPartsTrack, groupPartsPhi, parts, magFieldTesla1, multiplicityCol);
}
}
PROCESS_SWITCH(FemtoUniversePairTaskTrackPhi, processMixedEvent, "Enable processing mixed events", true);

///--------------------------------------------MC-------------------------------------------------///
void processSameEventMCReco(FilteredFDCollision const& col, FemtoRecoParticles const& parts, aod::FdMCParticles const& mcparts)
{
eventHisto.fillQA(col);
// Reco
auto thegroupPartsTrack = partsTrackMCReco->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
auto thegroupPartsPhi = partsPhiMCReco->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
// auto thegroupPartsPhiDaugh = partsPhiDaugh->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
// auto thegroupPartsKaons = partsKaons->sliceByCached(aod::femtouniverseparticle::fdCollisionId, col.globalIndex(), cache);
eventHisto.fillQA(col);
doSameEvent(thegroupPartsTrack, thegroupPartsPhi, parts, col.magField(), col.multNtr(), mcparts);
doSameEvent<true>(thegroupPartsTrack, thegroupPartsPhi, parts, col.magField(), col.multNtr(), mcparts);
}
PROCESS_SWITCH(FemtoUniversePairTaskTrackPhi, processSameEventMCReco, "Enable processing same event for MC Reco", true);

Expand All @@ -684,7 +695,7 @@ struct FemtoUniversePairTaskTrackPhi {
auto groupPartsTrack = partsTrackMCReco->sliceByCached(aod::femtouniverseparticle::fdCollisionId, collision2.globalIndex(), cache);
auto groupPartsPhi = partsPhiMCReco->sliceByCached(aod::femtouniverseparticle::fdCollisionId, collision1.globalIndex(), cache);

doMixedEvent(groupPartsTrack, groupPartsPhi, parts, magFieldTesla1, multiplicityCol, mcparts);
doMixedEvent<true>(groupPartsTrack, groupPartsPhi, parts, magFieldTesla1, multiplicityCol, mcparts);
}
}
PROCESS_SWITCH(FemtoUniversePairTaskTrackPhi, processMixedEventMCReco, "Enable processing mixed events for MC Reco", false);
Expand All @@ -702,6 +713,10 @@ struct FemtoUniversePairTaskTrackPhi {
continue;
}

if (pdgCode == ConfTrackPDGCode) {
effCorrection.fillTruthHist<ParticleNo::TWO, FilteredFDCollisions>(part);
}

// charge +
if (pdgParticle->Charge() > 0.0) {
registryMCtruth.fill(HIST("MCtruthAllPositivePt"), part.pt());
Expand All @@ -719,6 +734,7 @@ struct FemtoUniversePairTaskTrackPhi {
if (pdgCode == 333) {
registryMCtruth.fill(HIST("MCtruthPhi"), part.pt(), part.eta());
registryMCtruth.fill(HIST("MCtruthPhiPt"), part.pt());
effCorrection.fillTruthHist<ParticleNo::ONE, FilteredFDCollisions>(part);
continue;
}

Expand Down Expand Up @@ -750,12 +766,12 @@ struct FemtoUniversePairTaskTrackPhi {

if (mcpart.pdgMCTruth() == ConfTrackPDGCode && (part.pt() > ConfTrackPtLow) && (part.pt() < ConfTrackPtHigh) && isParticleNSigmaAccepted(part.p(), trackCuts.getNsigmaTPC(part, o2::track::PID::Proton), trackCuts.getNsigmaTOF(part, o2::track::PID::Proton), trackCuts.getNsigmaTPC(part, o2::track::PID::Pion), trackCuts.getNsigmaTOF(part, o2::track::PID::Pion), trackCuts.getNsigmaTPC(part, o2::track::PID::Kaon), trackCuts.getNsigmaTOF(part, o2::track::PID::Kaon))) {
registryMCpT.fill(HIST("MCReco/NC_p_pT"), part.pt());
float weightTrack = efficiencyCalculator.getWeight(ParticleNo::TWO, part.pt());
float weightTrack = effCorrection.getWeight<FilteredFDCollisions>(ParticleNo::TWO, part);
registryMCpT.fill(HIST("MCReco/C_p_pT"), part.pt(), weightTrack);
}
if ((mcpart.pdgMCTruth() == 333) && (part.partType() == aod::femtouniverseparticle::ParticleType::kPhi) && (part.pt() > ConfPhiPtLow) && (part.pt() < ConfPhiPtHigh)) {
registryMCpT.fill(HIST("MCReco/NC_phi_pT"), part.pt());
float weightPhi = efficiencyCalculator.getWeight(ParticleNo::ONE, part.pt());
float weightPhi = effCorrection.getWeight<FilteredFDCollisions>(ParticleNo::ONE, part);
registryMCpT.fill(HIST("MCReco/C_phi_pT"), part.pt(), weightPhi);
}

Expand All @@ -778,7 +794,6 @@ struct FemtoUniversePairTaskTrackPhi {
registryMCreco.fill(HIST("MCrecoPnegPt"), mcpart.pt());
}
}

} // partType kTrack
}
}
Expand Down
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