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[PWGLF] added process function to get the shape of the nsigma distributions f… #14118

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maciacco merged 1 commit into from
Dec 8, 2025
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[PWGLF] added process function to get the shape of the nsigma distributions f… #14118

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77 changes: 69 additions & 8 deletions PWGLF/TableProducer/Nuspex/he3HadronFemto.cxx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright 2019-2020 CERN and copyright holders of ALICE O2.

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[name/workflow-file] 

Name of a workflow file must match the name of the main struct in it (without the PWG prefix). (Class implementation files should be in "Core" directories.)
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
Expand Down Expand Up @@ -49,7 +49,7 @@
#include "Framework/runDataProcessing.h"
#include "ReconstructionDataFormats/Track.h"

#include <TDatabasePDG.h>

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[pdg/database] 

Do not use TDatabasePDG directly. Use o2::constants::physics::Mass... or Service<o2::framework::O2DatabasePDG> instead.
#include <TDirectory.h>
#include <TFile.h>
#include <TH1F.h>
Expand Down Expand Up @@ -310,16 +310,20 @@
{"He3/h2dEdxHe3candidates", "dEdx distribution; #it{p} (GeV/#it{c}); dE/dx (a.u.)", {HistType::kTH2F, {{200, -5.0f, 5.0f}, {100, 0.0f, 2000.0f}}}},
{"He3/h2NsigmaHe3TPC", "NsigmaHe3 TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(^{3}He)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"He3/h2NsigmaHe3TPC_preselection", "NsigmaHe3 TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(^{3}He)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"He3/h2NSigmaHe3ITS_preselection", "NsigmaHe3 ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} ^{3}He", {HistType::kTH2F, {{50, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},
{"He3/h2NSigmaHe3ITS", "NsigmaHe3 ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} ^{3}He", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},
{"He3/h2NSigmaHe3ITS_preselection", "NsigmaHe3 ITS distribution; signed #it{p}_{T} (GeV/#it{c}); n#sigma_{ITS} ^{3}He", {HistType::kTH2F, {{50, -5.0f, 5.0f}, {120, -3.0f, 3.0f}}}},

{"Had/hNClsHadITS", "had;N_{ITS} Cluster", {HistType::kTH1F, {{20, -10.0f, 10.0f}}}},
{"Had/hChi2NClHadITS", "had;Chi2_{ITS} Ncluster", {HistType::kTH1F, {{100, 0, 100.0f}}}},
{"Had/hHadronPt", "had; #it{p}_{T} (GeV/#it{c})", {HistType::kTH1F, {{120, -3.0f, 3.0f}}}},
{"Had/h2NsigmaHadronTPC", "NsigmaHadron TPC distribution; #it{p}_{T}(GeV/#it{c}); n#sigma_{TPC}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"Had/h2NsigmaHadronTPC_preselection", "NsigmaHe3 TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"Had/h2NsigmaHadronTPC_preselection", "NsigmaHadron TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"Had/h2NsigmaHadronTPC_mcBackground", "NsigmaHadron TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"Had/h2NsigmaHadronTPC_mcSignal", "NsigmaHadron TPC distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TPC}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"Had/h2NsigmaHadronTOF", "NsigmaHadron TOF distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {200, -5.0f, 5.0f}}}},
{"Had/h2NsigmaHadronTOF_preselection", "NsigmaHadron TOF distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"Had/h2NsigmaHadronTOF_mcBackground", "NsigmaHadron TOF distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
{"Had/h2NsigmaHadronTOF_mcSignal", "NsigmaHadron TOF distribution; #it{p}_{T} (GeV/#it{c}); n#sigma_{TOF}(had)", {HistType::kTH2F, {{100, -5.0f, 5.0f}, {400, -10.0f, 10.0f}}}},
},
OutputObjHandlingPolicy::AnalysisObject,
false,
Expand Down Expand Up @@ -532,22 +536,22 @@
bool selectionPIDHadron(const Ttrack& candidate)
{
auto tpcNSigmaHad = computeTPCNSigmaHadron(candidate);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC_preselection"), candidate.sign() * candidate.tpcInnerParam(), tpcNSigmaHad);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC_preselection"), candidate.tpcInnerParam(), tpcNSigmaHad);
if (candidate.hasTOF() && candidate.pt() > settingCutPtMinTOFHad) {
auto tofNSigmaHad = computeTOFNSigmaHadron(candidate);

if (std::abs(tpcNSigmaHad) > settingCutNsigmaTPC) {
return false;
}
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF_preselection"), candidate.sign() * candidate.pt(), tofNSigmaHad);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF_preselection"), candidate.pt(), tofNSigmaHad);
if (std::abs(tofNSigmaHad) > settingCutNsigmaTOF) {
return false;
}
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC"), candidate.sign() * candidate.pt(), tpcNSigmaHad);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF"), candidate.sign() * candidate.pt(), tofNSigmaHad);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC"), candidate.pt(), tpcNSigmaHad);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF"), candidate.pt(), tofNSigmaHad);
return true;
} else if (std::abs(tpcNSigmaHad) < settingCutNsigmaTPC) {
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC"), candidate.sign() * candidate.pt(), tpcNSigmaHad);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC"), candidate.pt(), tpcNSigmaHad);
return true;
}
return false;
Expand Down Expand Up @@ -632,7 +636,7 @@
std::array<float, 3> collisionVertex = getCollisionVertex(collisions, collIdx);
const auto& pca = mFitter.getPCACandidate();
float distance = defaultTodistance;
for (int i = 0; i < 3; i++) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
distance += (pca[i] - collisionVertex[i]) * (pca[i] - collisionVertex[i]);
}
if (distanceMin < 0 || distance < distanceMin) {
Expand All @@ -654,7 +658,7 @@
std::array<float, 3> collisionVertex = getCollisionVertex(collisions, he3Hadcand.collisionID);

he3Hadcand.momHe3 = std::array{trackHe3.px(), trackHe3.py(), trackHe3.pz()};
for (int i = 0; i < 3; i++)

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
he3Hadcand.momHe3[i] = he3Hadcand.momHe3[i] * 2;
he3Hadcand.momHad = std::array{trackHad.px(), trackHad.py(), trackHad.pz()};
float invMass = CommonInite;
Expand Down Expand Up @@ -1315,6 +1319,51 @@

for (const auto& track : tracks) {

if (!selectTrack(track, Species::kHad))
continue;

if (selectDcaNsigmaCut(track, Species::kHad)) {
mQaRegistry.fill(HIST("Had/hHadronPt"), track.pt());

const float tpcNSigmaHad = computeTPCNSigmaHadron(track);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC_preselection"), track.tpcInnerParam(), tpcNSigmaHad);

if (track.hasTOF()) {
const float tofNSigmaHad = computeTOFNSigmaHadron(track);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF_preselection"), track.pt(), tofNSigmaHad);
}
}

if (!selectTrack(track, Species::kHe3) || !selectDcaNsigmaCut(track, Species::kHe3))
continue;

mQaRegistry.fill(HIST("He3/hHe3Pt"), track.pt() * 2.f);
mQaRegistry.fill(HIST("He3/hDCAxyHe3"), track.dcaXY());
mQaRegistry.fill(HIST("He3/hDCAzHe3"), track.dcaZ());

bool heliumPID = track.pidForTracking() == o2::track::PID::Helium3 || track.pidForTracking() == o2::track::PID::Alpha;
float correctedTPCinnerParam = (heliumPID && settingCompensatePIDinTracking) ? track.tpcInnerParam() / 2.f : track.tpcInnerParam();
if (correctedTPCinnerParam < settingCutRigidityMinHe3) {
continue;
}

const float nSigmaHe3 = computeNSigmaHe3(track);
mQaRegistry.fill(HIST("He3/h2NsigmaHe3TPC_preselection"), track.sign() * 2 * track.pt(), nSigmaHe3);
}
}
PROCESS_SWITCH(he3HadronFemto, processPurity, "Process for purity studies", false);

void processPurityMc(const CollisionsFullMC::iterator& collision, const TrackCandidatesMC& tracks, const aod::BCsWithTimestamps& bcs, const aod::McParticles& /*mcParticles*/, const aod::McTrackLabels& /*mcTrackLabels*/)
{
if (!selectCollision</*isMC*/ false>(collision, bcs))
return;

for (const auto& track : tracks) {

if (!track.has_mcParticle())
continue;
const auto& particle = track.mcParticle_as<aod::McParticles>();

if (!selectTrack(track, Species::kHad))
continue;

Expand All @@ -1324,9 +1373,21 @@
const float tpcNSigmaHad = computeTPCNSigmaHadron(track);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC_preselection"), track.sign() * track.tpcInnerParam(), tpcNSigmaHad);

if (std::abs(particle.pdgCode()) != settingHadPDGCode) {
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC_mcBackground"), track.sign() * track.tpcInnerParam(), tpcNSigmaHad);
} else {
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTPC_mcSignal"), track.sign() * track.tpcInnerParam(), tpcNSigmaHad);
}

if (track.hasTOF()) {
const float tofNSigmaHad = computeTOFNSigmaHadron(track);
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF_preselection"), track.sign() * track.pt(), tofNSigmaHad);

if (std::abs(particle.pdgCode()) != settingHadPDGCode) {
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF_mcBackground"), track.sign() * track.tpcInnerParam(), tofNSigmaHad);
} else {
mQaRegistry.fill(HIST("Had/h2NsigmaHadronTOF_mcSignal"), track.sign() * track.tpcInnerParam(), tofNSigmaHad);
}
}
}

Expand All @@ -1347,7 +1408,7 @@
mQaRegistry.fill(HIST("He3/h2NsigmaHe3TPC_preselection"), track.sign() * 2 * track.pt(), nSigmaHe3);
}
}
PROCESS_SWITCH(he3HadronFemto, processPurity, "Process for purity studies", false);
PROCESS_SWITCH(he3HadronFemto, processPurityMc, "Process for purity studies mc", false);
};

WorkflowSpec defineDataProcessing(const ConfigContext& cfgc)
Expand Down
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