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[PWGLF] Add secondary-vertex cut in antiproton selection for antineutron CEX #14423

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Merged
maciacco merged 2 commits into from
Jan 8, 2026
+3 −3
Merged

[PWGLF] Add secondary-vertex cut in antiproton selection for antineutron CEX #14423

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8808d74
Fix typos error
FabiolaLP Dec 1, 2025
ebf0551
Implements a new cut at the secondary vertex in the antiprotons selec…
FabiolaLP Jan 8, 2026
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6 changes: 3 additions & 3 deletions PWGLF/TableProducer/Nuspex/nucleiAntineutronCex.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -49,8 +49,8 @@ struct NucleiAntineutronCex {
using TracksWCovMc = soa::Join<aod::TracksIU, aod::TracksExtra, aod::McTrackLabels, o2::aod::TracksCovIU>;

// === Cut values ===
static constexpr double kIts2MinR = 2.2; // ITS2 min radius [cm]
static constexpr double kIts2MaxR = 39.0; // ITS2 max radius [cm]
static constexpr double kIts2MinR = 4.5; // ITS2 min radius (exluding IB) [cm]
static constexpr double kIts2MaxR = 45.0; // ITS2 max radius [cm]
static constexpr double kIts2MaxVz = 39.0; // ITS2 max |vz| [cm]
static constexpr double kAccMaxEta = 1.2; // acceptance |eta|
static constexpr double kAccMaxVz = 5.3; // acceptance |vz| [cm]
Expand Down Expand Up @@ -609,7 +609,7 @@ struct NucleiAntineutronCex {
histos.fill(HIST("pItsPidValid"), pTrkItsPidValid);
histos.fill(HIST("pTgl"), pTrkTgl);
}
if (motherPdg == -kNeutron) {
if (motherPdg != -kNeutron) {
histos.fill(HIST("pItsNsigmaPr_bg"), pTrkItsNSigmaPr);
histos.fill(HIST("pItsPidValid_bg"), pTrkItsPidValid);
histos.fill(HIST("pTgl_bg"), pTrkTgl);
Expand Down
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