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nzardosh merged 1 commit into from
Mar 26, 2026
+205 −10
Merged

[PWGJE] tracking efficiency #15520

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215 changes: 205 additions & 10 deletions PWGJE/Tasks/jetSpectraEseTask.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
#include <Framework/HistogramSpec.h>
#include <Framework/InitContext.h>
#include <Framework/Logger.h>
#include <Framework/O2DatabasePDGPlugin.h>
#include <Framework/OutputObjHeader.h>
#include <Framework/runDataProcessing.h>

Expand All @@ -53,6 +54,7 @@ using namespace o2::framework;
using namespace o2::framework::expressions;

struct JetSpectraEseTask {
Configurable<std::string> cfgEfficiency{"cfgEfficiency", "", "CCDB path to efficiency"};
Configurable<float> jetPtMin{"jetPtMin", 5.0, "minimum jet pT cut"};
Configurable<float> jetR{"jetR", 0.2, "jet resolution parameter"};
Configurable<float> randomConeR{"randomConeR", 0.4, "size of random Cone for estimating background fluctuations"};
Expand Down Expand Up @@ -133,17 +135,26 @@ struct JetSpectraEseTask {
static constexpr float Acceptance = 0.9f;
static constexpr float LowFT0Cut = 1e-8;

Service<ccdb::BasicCCDBManager> ccdb;
struct Efficiency {
TH1D* hEff = nullptr;
bool isLoaded = false;
} cfg;

Filter trackCuts = (aod::jtrack::pt >= trackPtMin && aod::jtrack::pt < trackPtMax && aod::jtrack::eta > trackEtaMin && aod::jtrack::eta < trackEtaMax);
Filter jetCuts = aod::jet::pt > jetPtMin&& aod::jet::r == nround(jetR.node() * Scaler) && nabs(aod::jet::eta) < Acceptance - jetR;
Filter colFilter = nabs(aod::jcollision::posZ) < vertexZCut;
Filter mcCollisionFilter = nabs(aod::jmccollision::posZ) < vertexZCut;
using ChargedMCDJets = soa::Filtered<soa::Join<aod::ChargedMCDetectorLevelJets, aod::ChargedMCDetectorLevelJetConstituents, aod::ChargedMCDetectorLevelJetsMatchedToChargedMCParticleLevelJets, aod::ChargedMCDetectorLevelJetEventWeights>>;
Preslice<ChargedMCDJets> mcdjetsPerJCollision = o2::aod::jet::collisionId;
Preslice<aod::JetTracks> tracksPerJCollision = o2::aod::jtrack::collisionId;
Preslice<aod::JetTracksMCD> mcdTracksPerJCollision = o2::aod::jtrack::collisionId;
Preslice<aod::JetParticles> particlesPerJMcCollision = o2::aod::jmcparticle::mcCollisionId;

SliceCache cache;
using BinningType = ColumnBinningPolicy<aod::jcollision::PosZ, aod::jcollision::CentFT0C>;
BinningType corrBinning{{binsZVtx, binsCentrality}, true};
Service<o2::framework::O2DatabasePDG> pdg;

enum class DetID { FT0C,
FT0A,
Expand Down Expand Up @@ -389,6 +400,47 @@ struct JetSpectraEseTask {
registry.add("hOccupancy", "Occupancy;Occupancy;entries", {HistType::kTH1F, {{occAxis}}});
registry.add("hPsiOccupancy", "Occupancy;#Psi_{2};entries", {HistType::kTH3F, {{centAxis}, {150, -2.5, 2.5}, {occAxis}}});
}
if (doprocessMCGenTrack) {
LOGF(info, "JetSpectraEseTask::init() - MCGen track");
registry.add("hTrackPtGen", "", {HistType::kTH1F, {{assocTrackPt}}});
registry.add("hTrackEtaGen", "", {HistType::kTH1F, {{etaAxis}}});
registry.add("hTrackPhiGen", "", {HistType::kTH1F, {{phiAxis}}});
}
if (doprocessMCRecoTrack) {
LOGF(info, "JetSpectraEseTask::init() - MCRec track");
registry.add("hTrackPtReco", "", {HistType::kTH1F, {{assocTrackPt}}});
registry.add("hTrackEtaReco", "", {HistType::kTH1F, {{etaAxis}}});
registry.add("hTrackPhiReco", "", {HistType::kTH1F, {{phiAxis}}});
}
}

void loadEfficiency(aod::BCsWithTimestamps::iterator const& bc)
{
uint64_t timestamp = bc.timestamp();
if (cfg.isLoaded) {
return;
}
if (!cfgEfficiency.value.empty()) {
cfg.hEff = ccdb->getForTimeStamp<TH1D>(cfgEfficiency, timestamp);
if (cfg.hEff == nullptr) {
LOGF(fatal, "Could not load track efficiency from %s", cfgEfficiency.value.c_str());
}
LOGF(info, "Loaded tracking efficiency from %s (%p)", cfgEfficiency.value.c_str(), (void*)cfg.hEff);
}
cfg.isLoaded = true;
return;
}

template <typename TTrack>
double getEfficiency(TTrack track)
{
double eff{1.0};
if (cfg.hEff)
eff = cfg.hEff->GetBinContent(cfg.hEff->FindBin(track.pt()));
if (eff == 0)
return -1.;
else
return 1. / eff;
}

template <typename TCollision, typename TJets>
Expand Down Expand Up @@ -463,19 +515,25 @@ struct JetSpectraEseTask {
for (const auto& track : tracks) {
if (!jetderiveddatautilities::selectTrack(track, trackSelection))
continue;
double weff = getEfficiency(track);
if (weff < 0)
continue;
auto deta = track.eta() - jet.eta();
auto dphi = RecoDecay::constrainAngle(track.phi() - jet.phi(), -o2::constants::math::PIHalf);
registry.fill(HIST("thn_jethad_corr_same"), centrality, vCorrL, track.pt(), deta, dphi, dPhi, qPerc[0]);
hSameSub[lRndInd]->Fill(centrality, vCorrL, track.pt(), deta, dphi, dPhi, qPerc[0]);
registry.fill(HIST("thn_jethad_corr_same"), centrality, vCorrL, track.pt(), deta, dphi, dPhi, qPerc[0], weff);
hSameSub[lRndInd]->Fill(centrality, vCorrL, track.pt(), deta, dphi, dPhi, qPerc[0], weff);
}
}
for (const auto& track : tracks) {
registry.fill(HIST("trackQA/before/hTrackPt"), centrality, track.pt());
double weff = getEfficiency(track);
if (weff < 0)
continue;
registry.fill(HIST("trackQA/before/hTrackPt"), centrality, track.pt(), weff);
registry.fill(HIST("trackQA/before/hTrackEta"), centrality, track.eta());
registry.fill(HIST("trackQA/before/hTrackPhi"), centrality, track.phi());
if (!jetderiveddatautilities::selectTrack(track, trackSelection))
continue;
registry.fill(HIST("trackQA/after/hTrackPt"), centrality, track.pt());
registry.fill(HIST("trackQA/after/hTrackPt"), centrality, track.pt(), weff);
registry.fill(HIST("trackQA/after/hTrackEta"), centrality, track.eta());
registry.fill(HIST("trackQA/after/hTrackPhi"), centrality, track.phi());
registry.fill(HIST("h3CenttrPhiPsi2"), centrality, RecoDecay::constrainAngle(track.phi() - psi.psi2, -o2::constants::math::PI), qPerc[0]);
Expand All @@ -489,7 +547,10 @@ struct JetSpectraEseTask {
{
auto tracksTuple = std::make_tuple(jets, tracks);
Pair<TCollisions, TJets, TTracks, BinningType> pairData{corrBinning, numberEventsMixed, -1, collisions, tracksTuple, &cache};

for (const auto& [c1, jets1, c2, tracks2] : pairData) {
auto bc = c2.template bc_as<aod::BCsWithTimestamps>();
loadEfficiency(bc);
auto c1Tracks = tracks.sliceBy(tracksPerJCollision, c1.globalIndex());
registry.fill(HIST("eventQA/before/hVtxZMixed"), c1.posZ());
registry.fill(HIST("eventQA/before/hVtxZMixed2"), c2.posZ());
Expand Down Expand Up @@ -548,23 +609,29 @@ struct JetSpectraEseTask {
auto vCorrL = cfgrhoPhi ? corrL(jet) : vCorr;
float dPhi{RecoDecay::constrainAngle(jet.phi() - psi.psi2, -o2::constants::math::PI)};

registry.fill(HIST("hNtrigMixed"), centrality, vCorrL, dPhi, qPerc[0]);
for (const auto& track : tracks2) {
if (!jetderiveddatautilities::selectTrack(track, trackSelection))
continue;
double weff = getEfficiency(track);
if (weff < 0)
continue;
auto deta = track.eta() - jet.eta();
auto dphi = RecoDecay::constrainAngle(track.phi() - jet.phi(), -o2::constants::math::PIHalf);
registry.fill(HIST("hNtrigMixed"), centrality, vCorrL, dPhi, qPerc[0]);
registry.fill(HIST("thn_jethad_corr_mixed"), centrality, vCorrL, track.pt(), deta, dphi, dPhi, qPerc[0]);
registry.fill(HIST("thn_jethad_corr_mixed"), centrality, vCorrL, track.pt(), deta, dphi, dPhi, qPerc[0], weff);
}
}

for (const auto& track : tracks2) {
registry.fill(HIST("trackQA/before/hTrackPtMixed"), centrality, track.pt());
double weff = getEfficiency(track);
if (weff < 0)
continue;
registry.fill(HIST("trackQA/before/hTrackPtMixed"), centrality, track.pt(), weff);
registry.fill(HIST("trackQA/before/hTrackEtaMixed"), centrality, track.eta());
registry.fill(HIST("trackQA/before/hTrackPhiMixed"), centrality, track.phi());
if (!jetderiveddatautilities::selectTrack(track, trackSelection))
continue;
registry.fill(HIST("trackQA/after/hTrackPtMixed"), centrality, track.pt());
registry.fill(HIST("trackQA/after/hTrackPtMixed"), centrality, track.pt(), weff);
registry.fill(HIST("trackQA/after/hTrackEtaMixed"), centrality, track.eta());
registry.fill(HIST("trackQA/after/hTrackPhiMixed"), centrality, track.phi());
}
Expand All @@ -573,7 +640,7 @@ struct JetSpectraEseTask {

void processESEDataCharged(soa::Join<aod::JetCollisions, aod::BkgChargedRhos, aod::Qvectors, aod::QPercentileFT0Cs>::iterator const& collision,
soa::Filtered<soa::Join<aod::ChargedJets, aod::ChargedJetConstituents>> const& jets,
aod::JetTracks const& tracks)
aod::JetTracks const& tracks, aod::BCsWithTimestamps const&)
{
registry.fill(HIST("eventQA/hEventCounter"), kFilteredInputEv);
registry.fill(HIST("eventQA/before/hVtxZ"), collision.posZ());
Expand All @@ -585,13 +652,15 @@ struct JetSpectraEseTask {
return;
registry.fill(HIST("eventQA/hEventCounter"), kOccupancyCut);

auto bc = collision.bc_as<aod::BCsWithTimestamps>();
loadEfficiency(bc);
jetSpectra(collision, jets, tracks);
}
PROCESS_SWITCH(JetSpectraEseTask, processESEDataCharged, "process ese collisions", true);

void processESEDataChargedMixed(soa::Join<aod::JetCollisions, aod::BkgChargedRhos, aod::Qvectors, aod::QPercentileFT0Cs> const& collisions,
soa::Filtered<soa::Join<aod::ChargedJets, aod::ChargedJetConstituents>> const& jets,
aod::JetTracks const& tracks)
aod::JetTracks const& tracks, aod::BCsWithTimestamps const&)
{
jetMixed(collisions, jets, tracks);
}
Expand Down Expand Up @@ -768,6 +837,132 @@ struct JetSpectraEseTask {
}
PROCESS_SWITCH(JetSpectraEseTask, processMCChargedMatched, "jet MC process: geometrically matched MCP and MCD for response matrix and efficiency", false);

// process for gen/reco tracks for pT efficiency
bool isChargedParticle(int pdgCode)
{
auto pdgParticle = pdg->GetParticle(pdgCode);
return pdgParticle && pdgParticle->Charge() != 0.0;
}

void processMCGenTrack(soa::Filtered<soa::Join<aod::JetMcCollisions, aod::BkgChargedMcRhos>>::iterator const& mcCollision,
soa::SmallGroups<aod::JetCollisionsMCD> const& collisions,
aod::JetTracksMCD const&,
aod::JetParticles const& particles)
{
if (mcCollision.size() < 1) {
return;
}
if (collisions.size() != 1) {
return;
}
if (!(std::abs(mcCollision.posZ()) < vertexZCut)) {
return;
}

auto collision = collisions.begin();
if (!(std::abs(collision.posZ()) < vertexZCut)) {
return;
}
if (!jetderiveddatautilities::selectCollision(collision, eventSelectionBits)) {
return;
}
if (cfgEvSelOccupancy && !isOccupancyAccepted(collision)) {
return;
}

auto centrality = cfgisPbPb ? collision.centFT0M() : -1.0f;
if (cfgSelCentrality && cfgisPbPb && !isCentralitySelected(centrality)) {
return;
}

auto particlesInCollision = particles.sliceBy(particlesPerJMcCollision, mcCollision.globalIndex());
for (const auto& particle : particlesInCollision) {
if (!isChargedParticle(particle.pdgCode())) {
continue;
}
if (!particle.isPhysicalPrimary()) {
continue;
}
if (particle.pt() < trackPtMin || particle.pt() >= trackPtMax) {
continue;
}
if (particle.eta() <= trackEtaMin || particle.eta() >= trackEtaMax) {
continue;
}

registry.fill(HIST("hTrackPtGen"), particle.pt());
registry.fill(HIST("hTrackEtaGen"), particle.eta());
registry.fill(HIST("hTrackPhiGen"), particle.phi());
}
}
PROCESS_SWITCH(JetSpectraEseTask, processMCGenTrack, "jet MC process: Generated track", false);
void processMCRecoTrack(soa::Filtered<soa::Join<aod::JetMcCollisions, aod::BkgChargedMcRhos>>::iterator const& mcCollision,
soa::SmallGroups<aod::JetCollisionsMCD> const& collisions,
aod::JetTracksMCD const& tracks,
aod::JetParticles const&)
{
if (mcCollision.size() < 1) {
return;
}
if (collisions.size() < 1) {
return;
}
if (!(std::abs(mcCollision.posZ()) < vertexZCut)) {
return;
}

std::vector<int> seenMcParticles;
for (const auto& collision : collisions) {
if (!(std::abs(collision.posZ()) < vertexZCut)) {
continue;
}
if (!jetderiveddatautilities::selectCollision(collision, eventSelectionBits)) {
continue;
}
if (cfgEvSelOccupancy && !isOccupancyAccepted(collision)) {
continue;
}

auto centrality = cfgisPbPb ? collision.centFT0M() : -1.0f;
if (cfgSelCentrality && cfgisPbPb && !isCentralitySelected(centrality)) {
continue;
}

auto tracksInCollision = tracks.sliceBy(mcdTracksPerJCollision, collision.globalIndex());
for (const auto& track : tracksInCollision) {
if (!jetderiveddatautilities::selectTrack(track, trackSelection)) {
continue;
}
if (!track.has_mcParticle()) {
continue;
}

auto particle = track.mcParticle_as<aod::JetParticles>();
if (!isChargedParticle(particle.pdgCode())) {
continue;
}
if (!particle.isPhysicalPrimary()) {
continue;
}
if (particle.pt() < trackPtMin || particle.pt() >= trackPtMax) {
continue;
}
if (particle.eta() <= trackEtaMin || particle.eta() >= trackEtaMax) {
continue;
}
if (std::find(seenMcParticles.begin(), seenMcParticles.end(), particle.globalIndex()) != seenMcParticles.end()) {
continue;
}
seenMcParticles.push_back(particle.globalIndex());

registry.fill(HIST("hTrackPtReco"), track.pt());
registry.fill(HIST("hTrackEtaReco"), track.eta());
registry.fill(HIST("hTrackPhiReco"), track.phi());
}
}
}
PROCESS_SWITCH(JetSpectraEseTask, processMCRecoTrack, "jet MC process: Reconstructed track", false);

static constexpr float InvalidValue = 999.;

// template <bool FillAllPsi, bool FillHist, typename EPCol>
Expand Down
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