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[PWGCF] Updating PID strategy for nuclei #16742

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Merged
wenyaCern merged 3 commits into from
Jun 19, 2026
Merged

[PWGCF] Updating PID strategy for nuclei #16742

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2f87de4
Updating PID strategy
Jun 19, 2026
0cc2e9b
Please consider the following formatting changes
alibuild Jun 19, 2026
6a39c01
Merge pull request #4 from alibuild/alibot-cleanup-16742
sustripathy Jun 19, 2026
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12 changes: 11 additions & 1 deletion PWGCF/TwoParticleCorrelations/Tasks/nucleibalance.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -1710,6 +1710,7 @@ struct Lambdastarproxy {
Configurable<float> lstarCutNsigmaTOFKaon{"lstarCutNsigmaTOFKaon", float{NsigmaTOFDefault}, "|nSigma^{TOF}_{K}| cut"};
Configurable<float> lstarCutNsigmaTPCDe{"lstarCutNsigmaTPCDe", float{NsigmaTPCDefault}, "|nSigma^{TPC}_{d}| cut"};
Configurable<float> lstarCutNsigmaTOFDe{"lstarCutNsigmaTOFDe", float{NsigmaTOFDefault}, "|nSigma^{TOF}_{d}| cut"};
Configurable<int> lstarEnableTOFNsigmaCutDe{"lstarEnableTOFNsigmaCutDe", 0, "Enable deuteron-only TOF nSigma cut in PID strategy 2"};
// Optional deuteron-only TOF auxiliary selections.
// Defaults are OFF, so strategy 2 remains TPC nSigma only for deuterons.
Configurable<int> lstarEnableBetaCutDe{"lstarEnableBetaCutDe", 0, "Enable deuteron-only TOF beta cut using beta() > lstarBetaCutDe"};
Expand Down Expand Up @@ -2453,7 +2454,16 @@ struct Lambdastarproxy {
// For deuterons, follow the default idea of the official nuclei task:
// use TPC nσ as the main hard PID selection.
if (isDeuteron) {
return std::abs(nsTPC) < tpcCut;
if (std::abs(nsTPC) >= tpcCut) {
return false;
}
if (lstarEnableTOFNsigmaCutDe.value != 0) {
if (!hasTof) {
return false;
}
return std::abs(nsTOF) < tofCut;
}
return true;
}

// For kaons/protons, use the Lambda(1520)-like pT-ref circular TPC+TOF logic.
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