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[PWGJE] jetHadronsPid.cxx task: Change usage of pt thresholds in PID #17186

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[PWGJE] jetHadronsPid.cxx task: Change usage of pt thresholds in PID #17186

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a8eec1b
Change underlying event definition, add pt thresholds in Pid and new …
llorenc-11 Jul 20, 2026
fffc2eb
Change usage of pt thresholds for PID in jetsHadronsPid.cxx
llorenc-11 Jul 23, 2026
91381d9
Merge branch 'master' into PID-Hadrons-in-Jets
llorenc-11 Jul 23, 2026
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68 changes: 47 additions & 21 deletions PWGJE/Tasks/jetHadronsPid.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -646,52 +646,78 @@ struct JetHadronsPid {
double const buffer = 999.0;
double pt = track.pt();

double dPi = 0;
double dKa = 0;
double dPr = 0;
double distForPionsPi = 0;
double distForPionsKa = 0;
double distForPionsPr = 0;

double distForKaonsPi = 0;
double distForKaonsKa = 0;
double distForKaonsPr = 0;

double distForProtonsPi = 0;
double distForProtonsKa = 0;
double distForProtonsPr = 0;

if (pt < cfg.ptThresholdPion) {
dPi = std::abs(track.tpcNSigmaPi());
distForPionsPi = std::abs(track.tpcNSigmaPi());
distForPionsKa = std::abs(track.tpcNSigmaKa());
distForPionsPr = std::abs(track.tpcNSigmaPr());
} else {
if (track.hasTOF()) {
dPi = std::hypot(track.tofNSigmaPi(), track.tpcNSigmaPi());
distForPionsPi = std::hypot(track.tofNSigmaPi(), track.tpcNSigmaPi());
distForPionsKa = std::hypot(track.tofNSigmaKa(), track.tpcNSigmaKa());
distForPionsPr = std::hypot(track.tofNSigmaPr(), track.tpcNSigmaPr());
} else {
dPi = buffer;
distForPionsPi = buffer;
distForPionsKa = buffer;
distForPionsPr = buffer;
}
}

if (pt < cfg.ptThresholdKaon) {
dKa = std::abs(track.tpcNSigmaKa());
distForKaonsPi = std::abs(track.tpcNSigmaPi());
distForKaonsKa = std::abs(track.tpcNSigmaKa());
distForKaonsPr = std::abs(track.tpcNSigmaPr());
} else {
if (track.hasTOF()) {
dKa = std::hypot(track.tofNSigmaKa(), track.tpcNSigmaKa());
distForKaonsPi = std::hypot(track.tofNSigmaPi(), track.tpcNSigmaPi());
distForKaonsKa = std::hypot(track.tofNSigmaKa(), track.tpcNSigmaKa());
distForKaonsPr = std::hypot(track.tofNSigmaPr(), track.tpcNSigmaPr());
} else {
dKa = buffer;
distForKaonsPi = buffer;
distForKaonsKa = buffer;
distForKaonsPr = buffer;
}
}

if (pt < cfg.ptThresholdProton) {
dPr = std::abs(track.tpcNSigmaPr());
distForProtonsPi = std::abs(track.tpcNSigmaPi());
distForProtonsKa = std::abs(track.tpcNSigmaKa());
distForProtonsPr = std::abs(track.tpcNSigmaPr());
} else {
if (track.hasTOF()) {
dPr = std::hypot(track.tofNSigmaPr(), track.tpcNSigmaPr());
distForProtonsPi = std::hypot(track.tofNSigmaPi(), track.tpcNSigmaPi());
distForProtonsKa = std::hypot(track.tofNSigmaKa(), track.tpcNSigmaKa());
distForProtonsPr = std::hypot(track.tofNSigmaPr(), track.tpcNSigmaPr());
} else {
dPr = buffer;
distForProtonsPi = buffer;
distForProtonsKa = buffer;
distForProtonsPr = buffer;
}
}

bool isPiMatch = (dPi <= cfg.nSigmaCut);
bool isKaMatch = (dKa <= cfg.nSigmaCut);
bool isPrMatch = (dPr <= cfg.nSigmaCut);
bool isPiMatch = (distForPionsPi <= cfg.nSigmaCut);
bool isKaMatch = (distForKaonsKa <= cfg.nSigmaCut);
bool isPrMatch = (distForProtonsPr <= cfg.nSigmaCut);

PidResult res{.isPion = false, .isKaon = false, .isProton = false};

if (cfg.pidMethod == ClosestMatch) {
if (isPiMatch && dPi < dKa && dPi < dPr) {
if (isPiMatch && distForPionsPi < distForPionsKa && distForPionsPi < distForPionsPr) {
res.isPion = true;
} else if (isKaMatch && dKa < dPi && dKa < dPr) {
} else if (isKaMatch && distForKaonsKa < distForKaonsPi && distForKaonsKa < distForKaonsPr) {
res.isKaon = true;
} else if (isPrMatch && dPr < dPi && dPr < dKa) {
} else if (isPrMatch && distForProtonsPr < distForProtonsPi && distForProtonsPr < distForProtonsKa) {
res.isProton = true;
}
} else if (cfg.pidMethod == ExclusiveMatch) {
Expand All @@ -703,11 +729,11 @@ struct JetHadronsPid {
res.isProton = true;
}
} else if (cfg.pidMethod == RejectionBased) {
if (isPiMatch && dKa > cfg.rejectionSigma && dPr > cfg.rejectionSigma) {
if (isPiMatch && distForPionsKa > cfg.rejectionSigma && distForPionsPr > cfg.rejectionSigma) {
res.isPion = true;
} else if (isKaMatch && dPi > cfg.rejectionSigma && dPr > cfg.rejectionSigma) {
} else if (isKaMatch && distForKaonsPi > cfg.rejectionSigma && distForKaonsPr > cfg.rejectionSigma) {
res.isKaon = true;
} else if (isPrMatch && dPi > cfg.rejectionSigma && dKa > cfg.rejectionSigma) {
} else if (isPrMatch && distForProtonsPi > cfg.rejectionSigma && distForProtonsKa > cfg.rejectionSigma) {
res.isProton = true;
}
}
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