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[PWGJE] Change the method for measuring energy loss outside the jet #12326

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Merged
nzardosh merged 3 commits into from
Aug 1, 2025
Merged

[PWGJE] Change the method for measuring energy loss outside the jet #12326

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c86fe08
I changed the method for measuring energy loss outside the jet
ynishida-style Jul 30, 2025
994e419
Addition of necessary cut conditions
ynishida-style Jul 30, 2025
7bb4fac
Modified constrainAngle range from (0, 2π] to (−π, π].
ynishida-style Jul 31, 2025
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66 changes: 57 additions & 9 deletions PWGJE/Tasks/jetShape.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -43,15 +43,19 @@ struct JetShapeTask {
Configurable<int> nBinsNSigma{"nBinsNSigma", 101, "Number of nsigma bins"};
Configurable<float> nSigmaMin{"nSigmaMin", -10.1f, "Min value of nsigma"};
Configurable<float> nSigmaMax{"nSigmaMax", 10.1f, "Max value of nsigma"};
Configurable<int> nBinsP{"nBinsP", 700, "Number of p bins"};
Configurable<int> nBinsPt{"nBinsPt", 500, "Number of pT bins"};
Configurable<int> nBinsPForDedx{"nBinsPForDedx", 700, "Number of p bins"};
Configurable<int> nBinsPForBeta{"nBinsPForBeta", 500, "Number of pT bins"};
Configurable<int> nBinsTpcDedx{"nBinsTpcDedx", 500, "Number of DEdx bins"};
Configurable<int> nBinsTofBeta{"nBinsTofBeta", 350, "Number of Beta bins"};
Configurable<float> pMax{"pMax", 7.0f, "Max value of p"};
Configurable<float> ptMax{"ptMax", 5.0f, "Max value of pT"};
Configurable<int> nBinsDistance{"nBinsDistance", 7, "Number of distance bins"};
Configurable<float> distanceMax{"distanceMax", 0.7f, "Max value of distance"};
Configurable<float> nSigmaTofCut{"nSigmaTofCut", 2.0f, "Number of sigma cut for TOF PID"};
Configurable<float> tpcNSigmaPrMin{"tpcNSigmaPrMin", -3.5f, "Min value of tpcNsigmaProton"};
Configurable<float> tpcNSigmaPrMax{"tpcNSigmaPrMax", 0.5f, "Max value of tpcNsigmaProton"};
Configurable<float> tpcNSigmaPiMin{"tpcNSigmaPiMin", -0.5f, "Min value of tpcNsigmaPion"};
Configurable<float> tpcNSigmaPiMax{"tpcNSigmaPiMax", 3.5f, "Max value of tpcNsigmaPion"};

HistogramRegistry registry{"registry",
{{"tpcTofPi", "tpcTofPi", {HistType::kTHnSparseD, {{35, 0, pMax}, {nBinsNSigma, nSigmaMin, nSigmaMax}, {nBinsDistance, 0, distanceMax}}}},
Expand All @@ -60,11 +64,20 @@ struct JetShapeTask {
{"tofPi", "tofPi", {HistType::kTH2F, {{50, 0, ptMax}, {nBinsNSigma, nSigmaMin, nSigmaMax}}}},
{"tpcPr", "tpcPr", {HistType::kTH2F, {{70, 0, pMax}, {nBinsNSigma, nSigmaMin, nSigmaMax}}}},
{"tofPr", "tofPr", {HistType::kTH2F, {{50, 0, ptMax}, {nBinsNSigma, nSigmaMin, nSigmaMax}}}},
{"tpcDedx", "tpcDedx", {HistType::kTHnSparseD, {{nBinsP, 0, pMax}, {nBinsTpcDedx, 0, 1000}, {nBinsDistance, 0, distanceMax}}}},
{"tofBeta", "tofBeta", {HistType::kTHnSparseD, {{nBinsPt, 0, ptMax}, {nBinsTofBeta, 0.4, 1.1}, {nBinsDistance, 0, distanceMax}}}},
{"tpcDedx", "tpcDedx", {HistType::kTHnSparseD, {{nBinsPForDedx, 0, pMax}, {nBinsTpcDedx, 0, 1000}, {nBinsDistance, 0, distanceMax}}}},
{"tpcDedxOutOfJet", "tpcDedxOutOfJet", {HistType::kTH2F, {{nBinsPForDedx, 0, pMax}, {nBinsTpcDedx, 0, 1000}}}},
{"tofBeta", "tofBeta", {HistType::kTHnSparseD, {{nBinsPForBeta, 0, pMax}, {nBinsTofBeta, 0.4, 1.1}, {nBinsDistance, 0, distanceMax}}}},
{"pVsPtForProton", "pVsPtForProton", {HistType::kTHnSparseD, {{70, 0, pMax}, {50, 0, ptMax}, {nBinsDistance, 0, distanceMax}}}},
{"pVsPtForPion", "pVsPtPion", {HistType::kTHnSparseD, {{70, 0, pMax}, {50, 0, ptMax}, {nBinsDistance, 0, distanceMax}}}},
{"tofMass", "tofMass", {HistType::kTH1F, {{300, 0, 3}}}},
{"trackPhi", "trackPhi", {HistType::kTH1F, {{80, -1, 7}}}},
{"trackEta", "trackEta", {HistType::kTH1F, {{100, -1, 1}}}},
{"trackTpcNClsCrossedRows", "trackTpcNClsCrossedRows", {HistType::kTH1F, {{50, 0, 200}}}},
{"trackDcaXY", "trackDcaXY", {HistType::kTH1F, {{40, -10, 10}}}},
{"trackItsChi2NCl", "trackItsChi2NCl", {HistType::kTH1F, {{60, 0, 30}}}},
{"trackTpcChi2NCl", "trackTpcChi2NCl", {HistType::kTH1F, {{100, 0, 50}}}},
{"trackTpcNClsFound", "trackTpcNClsFound", {HistType::kTH1F, {{100, 0, 200}}}},
{"trackItsNCls", "trackItsNCls", {HistType::kTH1F, {{10, 0, 10}}}},
{"jetPt", "jet pT;#it{p}_{T,jet} (GeV/#it{c});entries", {HistType::kTH1F, {{200, 0., 200.}}}},
{"jetEta", "jet #eta;#eta_{jet};entries", {HistType::kTH1F, {{100, -1.0, 1.0}}}},
{"jetPhi", "jet #phi;#phi_{jet};entries", {HistType::kTH1F, {{80, -1.0, 7.}}}},
Expand Down Expand Up @@ -179,6 +192,7 @@ struct JetShapeTask {
float ptCorr = jet.pt() - collision.rho() * jet.area();

for (const auto& track : tracks) {

float preDeltaPhi1 = track.phi() - jet.phi();
float deltaPhi1 = RecoDecay::constrainAngle(preDeltaPhi1);
float deltaEta = track.eta() - jet.eta();
Expand All @@ -200,8 +214,8 @@ struct JetShapeTask {
float preDeltaPhiBg1 = track.phi() - phiBg1;
float preDeltaPhiBg2 = track.phi() - phiBg2;

float deltaPhiBg1 = RecoDecay::constrainAngle(preDeltaPhiBg1);
float deltaPhiBg2 = RecoDecay::constrainAngle(preDeltaPhiBg2);
float deltaPhiBg1 = RecoDecay::constrainAngle(preDeltaPhiBg1, -o2::constants::math::PI);
float deltaPhiBg2 = RecoDecay::constrainAngle(preDeltaPhiBg2, -o2::constants::math::PI);

float distanceBg1 = std::sqrt(deltaEta * deltaEta + deltaPhiBg1 * deltaPhiBg1);
float distanceBg2 = std::sqrt(deltaEta * deltaEta + deltaPhiBg2 * deltaPhiBg2);
Expand Down Expand Up @@ -257,6 +271,16 @@ struct JetShapeTask {

// tracks conditions
for (const auto& track : tracks) {

registry.fill(HIST("trackTpcNClsCrossedRows"), track.tpcNClsCrossedRows());
registry.fill(HIST("trackDcaXY"), track.dcaXY());
registry.fill(HIST("trackItsChi2NCl"), track.itsChi2NCl());
registry.fill(HIST("trackTpcChi2NCl"), track.tpcChi2NCl());
registry.fill(HIST("trackTpcNClsFound"), track.tpcNClsFound());
registry.fill(HIST("trackItsNCls"), track.itsNCls());
registry.fill(HIST("trackEta"), track.eta());
registry.fill(HIST("trackPhi"), track.phi());

if (std::abs(track.eta()) > etaTrUp)
continue;
if (track.tpcNClsCrossedRows() < nclcrossTpcMin)
Expand Down Expand Up @@ -289,18 +313,42 @@ struct JetShapeTask {
// calculate distance from jet axis
float distance = std::sqrt(deltaEta * deltaEta + deltaPhi1 * deltaPhi1);

// Define perpendicular cone axes in phi
float phiBg1 = jet.phi() + (o2::constants::math::PIHalf);
float phiBg2 = jet.phi() - (o2::constants::math::PIHalf);

// Calculate delta phi for background cones
float preDeltaPhiBg1 = track.phi() - phiBg1;
float preDeltaPhiBg2 = track.phi() - phiBg2;
float deltaPhiBg1 = RecoDecay::constrainAngle(preDeltaPhiBg1, -o2::constants::math::PI);
float deltaPhiBg2 = RecoDecay::constrainAngle(preDeltaPhiBg2, -o2::constants::math::PI);

// Calculate distance to background cone axes
// Note: deltaEta is the same for all cones at the same eta
float distanceBg1 = std::sqrt(deltaEta * deltaEta + deltaPhiBg1 * deltaPhiBg1);
float distanceBg2 = std::sqrt(deltaEta * deltaEta + deltaPhiBg2 * deltaPhiBg2);

// Fill histogram if track is inside one of the perpendicular cones
if (distanceBg1 < jetR || distanceBg2 < jetR) {
registry.fill(HIST("tpcDedxOutOfJet"), track.p(), track.tpcSignal());
}

registry.fill(HIST("distanceVsTrackpt"), distance, track.pt());
registry.fill(HIST("tpcDedx"), track.p(), track.tpcSignal(), distance);
registry.fill(HIST("tofBeta"), track.pt(), track.beta(), distance);
registry.fill(HIST("tofBeta"), track.p(), track.beta(), distance);

if (std::abs(track.tofNSigmaPr()) < nSigmaTofCut) {
registry.fill(HIST("pVsPtForProton"), track.p(), track.pt(), distance);
registry.fill(HIST("tpcTofPr"), track.p(), track.tpcNSigmaPr(), distance);
if (track.tpcNSigmaPr() > tpcNSigmaPrMin && track.tpcNSigmaPr() < tpcNSigmaPrMax) {
registry.fill(HIST("pVsPtForProton"), track.p(), track.pt(), distance);
}
}

if (std::abs(track.tofNSigmaPi()) < nSigmaTofCut) {
registry.fill(HIST("pVsPtForPion"), track.p(), track.pt(), distance);
registry.fill(HIST("tpcTofPi"), track.p(), track.tpcNSigmaPi(), distance);
if (track.tpcNSigmaPi() > tpcNSigmaPiMin && track.tpcNSigmaPi() < tpcNSigmaPiMax) {
registry.fill(HIST("pVsPtForPion"), track.p(), track.pt(), distance);
}
}
}
}
Expand Down
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