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[PWGLF] Nuclei proton correlation: add TOF proton rejection #18280

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Merged
maciacco merged 2 commits into from
Oct 13, 2026
Merged

[PWGLF] Nuclei proton correlation: add TOF proton rejection #18280

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0dfe111
fix proton rejection
ercolessi Oct 13, 2026
90fb7b7
fix clang
ercolessi Oct 13, 2026
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5 changes: 3 additions & 2 deletions PWGLF/Tasks/Nuspex/hadronnucleicorrelation.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,7 @@ struct HadronNucleiCorrelation {
Configurable<float> nsigmaElDe{"nsigmaElDe", 3.0f, "cut nsigma TPC El for protons"};
Configurable<float> nsigmaTOF{"nsigmaTOF", 3.5f, "cut nsigma TOF"};
Configurable<float> nsigmaTPCPrRej{"nsigmaTPCPrRej", 3.f, "cut nsigma TPC for proton rejection"};
Configurable<float> nsigmaTOFPrRej{"nsigmaTOFPrRej", 3.f, "cut nsigma TOF for proton rejection"};
Configurable<bool> doPrRej{"doPrRej", true, "do TPC proton rejection"};
Configurable<float> nsigmaQuadratic{"nsigmaQuadratic", 3.0f, "cut on sqrt(nsigmaTPC^2 + nsigmaTOF^2), used above the TOF pT threshold when doQuadraticPID is on"};
Configurable<float> nsigmaITSPr{"nsigmaITSPr", -2.0f, "cut nsigma ITS Pr"};
Expand Down Expand Up @@ -621,7 +622,7 @@ struct HadronNucleiCorrelation {
const bool isTOFPID = std::abs(track.tofNSigmaDe()) < nsigmaTOF.value;
const bool isTPCElRejection = rejectionEl.value && track.beta() < BetahasTOFthr && track.pt() < pTthrdeTPCEl.value && track.tpcNSigmaEl() >= nsigmaElDe.value;
const bool isITSPID = track.itsNSigmaDe() > nsigmaITSDe.value;
const bool isNotPr = std::abs(track.tpcNSigmaPr()) >= nsigmaTPCPrRej.value || !doPrRej.value;
const bool isNotPr = (std::abs(track.tpcNSigmaPr()) >= nsigmaTPCPrRej.value && std::abs(track.tofNSigmaPr()) >= nsigmaTOFPrRej.value) || !doPrRej.value;

const bool isQuadraticPID = std::hypot(track.tpcNSigmaDe(), track.tofNSigmaDe()) < nsigmaQuadratic.value;

Expand Down Expand Up @@ -1030,7 +1031,7 @@ struct HadronNucleiCorrelation {

const bool isTPCElRejection = rejectionEl.value && track.beta() < BetahasTOFthr && track.pt() < pTthrdeTPCEl.value && track.tpcNSigmaEl() >= nsigmaElDe.value;
const bool isTOFPID = std::abs(track.tofNSigmaDe()) < nsigmaTOF.value;
const bool isNotPr = std::abs(track.tpcNSigmaPr()) >= nsigmaTPCPrRej.value || !doPrRej.value;
const bool isNotPr = (std::abs(track.tpcNSigmaPr()) >= nsigmaTPCPrRej.value && std::abs(track.tofNSigmaPr()) >= nsigmaTOFPrRej.value) || !doPrRej.value;

if (track.sign() > 0) {

Expand Down
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