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[PWGHF] Fix PID assignment in Xic0 and Omegac0 candidate creator #16352

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[PWGHF] Fix PID assignment in Xic0 and Omegac0 candidate creator #16352

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c00e930
Fix PID assignment in Xic0 and Omegac0 candidate creator
mtorresc15 May 20, 2026
9dc3218
Fix PID assignment in Xic0 and Omegac0 candidate creator
mtorresc15 May 22, 2026
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43 changes: 37 additions & 6 deletions PWGHF/TableProducer/candidateCreatorXic0Omegac0.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,28 @@
V0Unmatched
};

// Convert the KFParticle PDG code to the O2 track PID enum needed by getTrackParCovFromKFP()
o2::track::PID::ID getTrackPIDFromPDG(const int pdg)
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@vkucera vkucera May 22, 2026

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There is no way this conversion does not exist in some common utilities yet.

{
switch (std::abs(pdg)) {
case 211:
return o2::track::PID::Pion;
case 321:
return o2::track::PID::Kaon;
Comment on lines +103 to +106
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@vkucera vkucera May 22, 2026

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Don't use magic numbers.

case 2212:
return o2::track::PID::Proton;
case 3122:
return o2::track::PID::Lambda;
case 3312:
return o2::track::PID::XiMinus;
case 3334:
return o2::track::PID::OmegaMinus;
default:
LOGF(fatal, "Unsupported PDG code %d in getTrackPIDFromPDG()", pdg);
return o2::track::PID::Pion;

Check failure on line 117 in PWGHF/TableProducer/candidateCreatorXic0Omegac0.cxx

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}
}

// Reconstruction of omegac0 and xic0 candidates
struct HfCandidateCreatorXic0Omegac0 {
Produces<aod::HfCandToXiPi> rowCandToXiPi;
Expand Down Expand Up @@ -959,12 +981,16 @@

omegaDauChargedTrackParCov = getTrackParCovFromKFP(kfBachKaonToOmega, o2::track::PID::Kaon, bachCharge); // Cascade bach kaon
omegaDauChargedTrackParCov.setAbsCharge(1);
o2::track::TrackParCov trackCasc = getTrackParCovFromKFP(kfOmegaToOmegaC, kfOmegaToOmegaC.GetPDG(), bachCharge);
o2::track::PID::ID pidCasc = getTrackPIDFromPDG(kfOmegaToOmegaC.GetPDG());
o2::track::TrackParCov trackCasc = getTrackParCovFromKFP(kfOmegaToOmegaC, pidCasc, bachCharge);
trackCasc.setAbsCharge(1);

trackParCovV0Dau0 = getTrackParCovFromKFP(kfPos, kfPos.GetPDG(), 1); // V0 postive daughter
o2::track::PID::ID pidV0Dau0 = getTrackPIDFromPDG(kfPos.GetPDG());
trackParCovV0Dau0 = getTrackParCovFromKFP(kfPos, pidV0Dau0, +1); // V0 postive daughter
trackParCovV0Dau0.setAbsCharge(1);
trackParCovV0Dau1 = getTrackParCovFromKFP(kfNeg, kfNeg.GetPDG(), -1); // V0 negtive daughter

o2::track::PID::ID pidV0Dau1 = getTrackPIDFromPDG(kfNeg.GetPDG());
trackParCovV0Dau1 = getTrackParCovFromKFP(kfNeg, pidV0Dau1, -1); // V0 negative daughter
trackParCovV0Dau1.setAbsCharge(1);

//-------------------------- V0 info---------------------------
Expand Down Expand Up @@ -1452,12 +1478,17 @@

xiDauChargedTrackParCov = getTrackParCovFromKFP(kfBachPionToXi, o2::track::PID::Pion, bachCharge); // Cascade bach pion
xiDauChargedTrackParCov.setAbsCharge(1);
o2::track::TrackParCov trackCasc = getTrackParCovFromKFP(kfXiToXiC, kfXiToXiC.GetPDG(), bachCharge);

o2::track::PID::ID pidCasc = getTrackPIDFromPDG(kfXiToXiC.GetPDG());
o2::track::TrackParCov trackCasc = getTrackParCovFromKFP(kfXiToXiC, pidCasc, bachCharge);
trackCasc.setAbsCharge(1);

trackParCovV0Dau0 = getTrackParCovFromKFP(kfPos, kfPos.GetPDG(), 1); // V0 postive daughter
o2::track::PID::ID pidV0Dau0 = getTrackPIDFromPDG(kfPos.GetPDG());
trackParCovV0Dau0 = getTrackParCovFromKFP(kfPos, pidV0Dau0, +1); // V0 postive daughter
trackParCovV0Dau0.setAbsCharge(1);
trackParCovV0Dau1 = getTrackParCovFromKFP(kfNeg, kfNeg.GetPDG(), -1); // V0 negtive daughter

o2::track::PID::ID pidV0Dau1 = getTrackPIDFromPDG(kfNeg.GetPDG());
trackParCovV0Dau1 = getTrackParCovFromKFP(kfNeg, pidV0Dau1, -1); // V0 negative daughter
trackParCovV0Dau1.setAbsCharge(1);

//-------------------------- V0 info---------------------------
Expand Down
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