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[PWGLF] NucleiTask - Add pt fix for wrong tracking #14859

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[PWGLF] NucleiTask - Add pt fix for wrong tracking #14859

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419342c
NucleiTask - Fix error
giovannimalfattore Oct 21, 2025
5d9a967
NucleiTask - Fix bugs in mult dependent histos
giovannimalfattore Oct 21, 2025
2913b73
NucleiTask - Add pt fix for wrong tracking
giovannimalfattore Feb 8, 2026
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6 changes: 5 additions & 1 deletion PWGLF/DataModel/LFNucleiTables.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,9 @@
///

#include "Common/CCDB/EventSelectionParams.h"
#include "Framework/AnalysisDataModel.h"

#include "Framework/ASoAHelpers.h"
#include "Framework/AnalysisDataModel.h"

#ifndef PWGLF_DATAMODEL_LFNUCLEITABLES_H_
#define PWGLF_DATAMODEL_LFNUCLEITABLES_H_
Expand Down Expand Up @@ -97,6 +98,7 @@ DECLARE_SOA_COLUMN(TOFExpMom, tofExpMom, float);
DECLARE_SOA_COLUMN(TPCSignal, tpcSignal, float);
DECLARE_SOA_COLUMN(Beta, beta, float);
// TPC and ITS QA
DECLARE_SOA_COLUMN(PIDForTracking, pidForTracking, uint8_t);
DECLARE_SOA_COLUMN(ITSNCls, itsNCls, int16_t);
DECLARE_SOA_COLUMN(TPCChi2Ncl, tpcChi2NCl, float);
DECLARE_SOA_COLUMN(ITSChi2NCl, itsChi2NCl, float);
Expand Down Expand Up @@ -168,6 +170,7 @@ DECLARE_SOA_TABLE(LfCandNucleus, "AOD", "LFNUCL",
full::HasTRD,
full::TPCInnerParam,
full::Beta,
full::PIDForTracking,
full::TPCSignal,
full::Pt,
full::Eta,
Expand Down Expand Up @@ -200,6 +203,7 @@ DECLARE_SOA_TABLE_VERSIONED(LfCandNucleusDummy, "AOD", "LFNUCL", 1,
full::HasTRD,
full::TPCInnerParam,
full::Beta,
full::PIDForTracking,
full::TPCSignal,
full::Pt,
full::Eta,
Expand Down
1 change: 1 addition & 0 deletions PWGLF/TableProducer/Nuspex/LFTreeCreatorNuclei.cxx
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Expand Up @@ -247,6 +247,7 @@ struct LfTreeCreatorNuclei {
track.hasTRD(),
track.tpcInnerParam(),
track.beta(),
track.pidForTracking(),
track.tpcSignal(),
track.pt(), track.eta(), track.phi(),
track.sign(),
Expand Down
67 changes: 51 additions & 16 deletions PWGLF/Tasks/Nuspex/LFNucleiBATask.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -215,6 +215,7 @@ struct LFNucleiBATask {
TF1* fShiftPtantiHe = 0;
TF1* fShiftAntiD = 0;
TF1* fShiftD = 0;
TF1* fShiftPtPID = 0;

Configurable<bool> enablePtShiftD{"enablePtShiftD", true, "Flag to enable Pt shift (for Deuteron only)"};
Configurable<bool> enablePtShiftAntiD{"enablePtShiftAntiD", true, "Flag to enable Pt shift (for antiDeuteron only)"};
Expand All @@ -225,6 +226,9 @@ struct LFNucleiBATask {
Configurable<std::vector<float>> parShiftPtHe{"parShiftPtHe", {0.0f, 0.1f, 0.1f, 0.1f, 0.1f}, "Parameters for helium3-Pt shift (if enabled)."};
Configurable<std::vector<float>> parShiftPtAntiHe{"parShiftPtAntiHe", {0.0f, 0.1f, 0.1f, 0.1f, 0.1f}, "Parameters for anti-helium3-Pt shift (if enabled)."};

Configurable<bool> enablePtShiftPID{"enablePtShiftPID", true, "Flag to enable wrong PID in tracking pT correction shift"};
Configurable<std::vector<float>> parShiftPtPID{"parShiftPtPID", {0.0f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f}, "Parameters for helium3-Pt wrong pid shift (if enabled)."};

Configurable<bool> enableCentrality{"enableCentrality", true, "Flag to enable centrality 3D histos)"};

// ITS to TPC - Fake hit loop
Expand Down Expand Up @@ -581,7 +585,7 @@ struct LFNucleiBATask {
}

if (enableDebug) {
debugHistos.add<TH1>("debug/event/h1CentV0M", "V0M; Multiplicity; counts", HistType::kTH1F, {{27000, 0, 27000}});
// debugHistos.add<TH1>("debug/event/h1CentV0M", "V0M; Multiplicity; counts", HistType::kTH1F, {{27000, 0, 27000}});
// trackQA
debugHistos.add<TH1>("debug/tracks/h1Eta", "pseudoRapidity; #eta; counts", HistType::kTH1F, {{200, -2.0, 2.0}});
debugHistos.add<TH1>("debug/tracks/h1VarPhi", "#phi; #phi; counts", HistType::kTH1F, {{63, 0.0, 6.3}});
Expand Down Expand Up @@ -776,6 +780,11 @@ struct LFNucleiBATask {
histos.add<TH1>("tracks/helium/h1HeliumSpectra_Z2", "#it{p}_{T} (He)", HistType::kTH1F, {ptHeAxis});
histos.add<TH1>("tracks/helium/h1antiHeliumSpectra_Z2", "#it{p}_{T} (#bar{He})", HistType::kTH1F, {ptHeAxis});

if (enableDebug) {
debugHistos.add<TH2>("tracks/helium/h2HeliumPidTrackingVsPt", "#it{p}_{T} (He) vs PIDforTracking", HistType::kTH2F, {{80, 0, 8}, {9, -0.5, 8.5}});
debugHistos.add<TH2>("tracks/helium/h2antiHeliumPidTrackingVsPt", "#it{p}_{T} (#bar{He}) vs PIDforTracking", HistType::kTH2F, {{80, 0, 8}, {9, -0.5, 8.5}});
}

if (outFlagOptions.doTOFplots && enableCentrality) {
histos.add<TH2>("tracks/helium/TOF/h2HeliumSpectraVsMult_Z2", "#it{p}_{T} (He)", HistType::kTH2F, {{ptHeAxis}, {binsPercentile}});
histos.add<TH2>("tracks/helium/TOF/h2antiHeliumSpectraVsMult_Z2", "#it{p}_{T} (#bar{He})", HistType::kTH2F, {{ptHeAxis}, {binsPercentile}});
Expand Down Expand Up @@ -1733,7 +1742,7 @@ struct LFNucleiBATask {
}

if (outFlagOptions.doTOFplots && outFlagOptions.enablePIDplot) {
histos.add<TH2>("tracks/h2TPCsignVsBetaGamma", "TPC <-dE/dX> vs #beta#gamma/Z; Signed #beta#gamma; TPC <-dE/dx> (a.u.)", HistType::kTH2F, {{250, -5.f, 5.f}, {dedxAxis}});
histos.add<TH2>("tracks/h2TPCsignVsBetaGamma", "TPC <-dE/dX> vs #beta#gamma/Z; Signed #beta#gamma; TPC <-dE/dx> (a.u.)", HistType::kTH2F, {{200, -4.f, 4.f}, {dedxAxis}});
histos.add<TH2>("tracks/h2TOFbetaVsP", "TOF #beta vs #it{p}/Z; Signed #it{p} (GeV/#it{c}); TOF #beta", HistType::kTH2F, {{250, -5.f, 5.f}, {betaAxis}});
if (outFlagOptions.enableBetaCut)
histos.add<TH2>("tracks/h2TOFbetaVsP_BetaCut", "TOF #beta vs #it{p}/Z; Signed #it{p} (GeV/#it{c}); TOF #beta", HistType::kTH2F, {{250, -5.f, 5.f}, {betaAxis}});
Expand Down Expand Up @@ -2154,32 +2163,35 @@ struct LFNucleiBATask {

spectraGen.add("helium/histPtGenHe", "PtGenHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPtRecHe", "PtRecHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPtShiftHe", "PtReco-PtGen vs PtReco;#it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPtShiftHeVsGen", "PtReco-PtGen vs PtGen;#it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPtShiftVsEtaHe", "PtReco-PtGen vs #eta", HistType::kTH2F, {{200, -2.f, 2.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPtShiftHe", "PtReco-PtGen vs PtReco;#it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPtShiftHeVsGen", "PtReco-PtGen vs PtGen;#it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPtShiftHe_WrongPidTr", "PtReco-PtGen (He, wrong PIDforTracking) vs PtReco;#it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});

spectraGen.add("helium/histPtShiftVsEtaHe", "PtReco-PtGen vs #eta", HistType::kTH2F, {{140, -1.4f, 1.4f}, {140, -1.f, 1.4f}});

spectraGen.add("helium/histPGenHe", "PGenHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPRecHe", "PRecHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPShiftHe", "PReco-PGen vs PReco", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPShiftVsEtaHe", "PReco-PGen vs #eta", HistType::kTH2F, {{200, -2.f, 2.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPShiftHe", "PReco-PGen vs PReco", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPShiftVsEtaHe", "PReco-PGen vs #eta", HistType::kTH2F, {{140, -1.4f, 1.4f}, {140, -1.f, 1.4f}});

spectraGen.add("helium/histPtGenantiHe", "PtGenantiHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPtRecantiHe", "PtRecantiHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPtShiftantiHe", "PtReco-PtGen vs PtReco; #it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPtShiftantiHeVsGen", "PtReco-PtGen vs PtGen; #it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPtShiftVsEtaantiHe", "PtReco-PtGen vs #eta", HistType::kTH2F, {{200, -2.f, 2.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPtShiftantiHe", "PtReco-PtGen vs PtReco; #it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPtShiftantiHeVsGen", "PtReco-PtGen vs PtGen; #it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPtShiftantiHe_WrongPidTr", "PtReco-PtGen (#bar{H}e, wrong PIDforTracking) vs PtReco;#it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPtShiftVsEtaantiHe", "PtReco-PtGen vs #eta", HistType::kTH2F, {{140, -1.4f, 1.4f}, {140, -1.f, 1.4f}});

if (outFlagOptions.doTOFplots) {
spectraGen.add("helium/TOF/histPtShiftHe", "PtReco-PtGen vs PtReco;#it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/TOF/histPtShiftHeVsGen", "PtReco-PtGen vs PtGen;#it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/TOF/histPtShiftantiHe", "PtReco-PtGen vs PtReco; #it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/TOF/histPtShiftantiHeVsGen", "PtReco-PtGen vs PtGen; #it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/TOF/histPtShiftHe", "PtReco-PtGen vs PtReco;#it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/TOF/histPtShiftHeVsGen", "PtReco-PtGen vs PtGen;#it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/TOF/histPtShiftantiHe", "PtReco-PtGen vs PtReco; #it{p}_{T}(reco); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/TOF/histPtShiftantiHeVsGen", "PtReco-PtGen vs PtGen; #it{p}_{T}(gen); #it{p}_{T}(reco) - #it{p}_{T}(gen)", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
}

spectraGen.add("helium/histPGenantiHe", "PGenantiHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPRecantiHe", "PRecantiHe", HistType::kTH1F, {{800, 0.f, 8.f}});
spectraGen.add("helium/histPShiftantiHe", "PReco-PGen vs PReco", HistType::kTH2F, {{800, 0.f, 8.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPShiftVsEtaantiHe", "PReco-PGen vs #eta", HistType::kTH2F, {{200, -2.f, 2.f}, {400, -4.f, 4.f}});
spectraGen.add("helium/histPShiftantiHe", "PReco-PGen vs PReco", HistType::kTH2F, {{800, 0.f, 8.f}, {140, -1.f, 1.4f}});
spectraGen.add("helium/histPShiftVsEtaantiHe", "PReco-PGen vs #eta", HistType::kTH2F, {{140, -1.4f, 1.4f}, {140, -1.f, 1.4f}});

spectraGen.add("pion/histGenPtPion", "generated particles", HistType::kTH1F, {ptAxis});
spectraGen.add("pion/histGenPtPionPrim", "generated particles", HistType::kTH1F, {ptAxis});
Expand Down Expand Up @@ -2453,9 +2465,11 @@ struct LFNucleiBATask {
}

isTritonTPCpid = std::abs(track.tpcNSigmaTr()) < nsigmaTPCvar.nsigmaTPCTr;
bool heliumPID = track.pidForTracking() == o2::track::PID::Helium3 || track.pidForTracking() == o2::track::PID::Alpha;

float shiftPtPos = 0.f;
float shiftPtNeg = 0.f;
float shiftPtPID = 0.f;

if (enablePtShiftHe && !fShiftPtHe) {
fShiftPtHe = new TF1("fShiftPtHe", "[0] * exp([1] + [2] * x) + [3] + [4] * x", 0.f, 8.f);
Expand All @@ -2475,6 +2489,12 @@ struct LFNucleiBATask {
fShiftAntiD->SetParameters(parAntiD[0], parAntiD[1], parAntiD[2], parAntiD[3], parAntiD[4]);
}

if (enablePtShiftPID && !fShiftPtPID) {
fShiftPtPID = new TF1("fShiftPtPID", "[0] * exp([1] + [2] * x) + [3] + [4] * x + [5] * x * x + [6] * x * x * x", 0.f, 8.f);
auto parPID = (std::vector<float>)parShiftPtPID; // NOLINT
fShiftPtPID->SetParameters(parPID[0], parPID[1], parPID[2], parPID[3], parPID[4], parPID[5], parPID[6]);
}

switch (unableAntiDPtShift) {
case 0:
if (enablePtShiftAntiD && fShiftAntiD) {
Expand Down Expand Up @@ -2517,6 +2537,13 @@ struct LFNucleiBATask {
shiftPtNeg = fShiftPtantiHe->Eval(2 * track.pt());
antihePt = track.pt() - shiftPtNeg / 2.f;
}
if (enablePtShiftPID && fShiftPtPID) {
shiftPtPID = fShiftPtPID->Eval(2 * track.pt());
if (!heliumPID && (track.pt() < 2.4f)) {
hePt = track.pt() - shiftPtPID / 2.f;
antihePt = track.pt() - shiftPtPID / 2.f;
}
}
break;
case 1:
hePt = 2.f * track.pt();
Expand Down Expand Up @@ -3719,6 +3746,8 @@ struct LFNucleiBATask {
spectraGen.fill(HIST("helium/histPtRecHe"), 2.f * hePt);
spectraGen.fill(HIST("helium/histPtShiftHe"), 2.f * hePt, 2.f * hePt - track.mcParticle().pt());
spectraGen.fill(HIST("helium/histPtShiftHeVsGen"), track.mcParticle().pt(), 2.f * hePt - track.mcParticle().pt());
if (!heliumPID)
spectraGen.fill(HIST("helium/histPtShiftHe_WrongPidTr"), 2.f * hePt, 2.f * hePt - track.mcParticle().pt());
spectraGen.fill(HIST("helium/histPtShiftVsEtaHe"), track.eta(), 2.f * hePt - track.mcParticle().pt());
if (track.hasTOF() && outFlagOptions.doTOFplots) {
spectraGen.fill(HIST("helium/TOF/histPtShiftHe"), 2.f * hePt, 2.f * hePt - track.mcParticle().pt());
Expand Down Expand Up @@ -3796,6 +3825,8 @@ struct LFNucleiBATask {
spectraGen.fill(HIST("helium/histPtRecantiHe"), 2.f * antihePt);
spectraGen.fill(HIST("helium/histPtShiftantiHe"), 2.f * antihePt, 2.f * antihePt - track.mcParticle().pt());
spectraGen.fill(HIST("helium/histPtShiftantiHeVsGen"), track.mcParticle().pt(), 2.f * antihePt - track.mcParticle().pt());
if (!heliumPID)
spectraGen.fill(HIST("helium/histPtShiftantiHe_WrongPidTr"), 2.f * antihePt, 2.f * antihePt - track.mcParticle().pt());
spectraGen.fill(HIST("helium/histPtShiftVsEtaantiHe"), track.eta(), 2.f * antihePt - track.mcParticle().pt());
if (track.hasTOF() && outFlagOptions.doTOFplots) {
spectraGen.fill(HIST("helium/TOF/histPtShiftantiHe"), 2.f * antihePt, 2.f * antihePt - track.mcParticle().pt());
Expand Down Expand Up @@ -4832,6 +4863,8 @@ struct LFNucleiBATask {
histos.fill(HIST("tracks/helium/h2HeliumEtavsPt_Z2"), track.eta(), 2 * hePt);
if (outFlagOptions.enablePIDplot)
histos.fill(HIST("tracks/helium/h2TPCsignVsTPCmomentumHelium"), heTPCmomentum, track.tpcSignal());
if (enableDebug)
debugHistos.fill(HIST("tracks/helium/h2HeliumPidTrackingVsPt"), 2 * hePt, track.pidForTracking());
}
if (isAntiHeWTPCpid) {
if (outFlagOptions.enableEffPlots) {
Expand All @@ -4843,6 +4876,8 @@ struct LFNucleiBATask {
histos.fill(HIST("tracks/helium/h2antiHeliumEtavsPt_Z2"), track.eta(), 2 * antihePt);
if (outFlagOptions.enablePIDplot)
histos.fill(HIST("tracks/helium/h2TPCsignVsTPCmomentumantiHelium"), antiheTPCmomentum, track.tpcSignal());
if (enableDebug)
debugHistos.fill(HIST("tracks/helium/h2antiHeliumPidTrackingVsPt"), 2 * antihePt, track.pidForTracking());
}

if (outFlagOptions.doTOFplots && track.hasTOF()) {
Expand Down
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