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[PWGCF] FemtoUniverse Producer - implemented competing mass rejection only for Omegas #18540

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Merged
prchakra merged 1 commit into from
Nov 1, 2026
Merged

[PWGCF] FemtoUniverse Producer - implemented competing mass rejection only for Omegas #18540

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19 changes: 16 additions & 3 deletions PWGCF/FemtoUniverse/Core/FemtoUniverseCascadeSelection.h
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Original file line number Diff line number Diff line change
Expand Up @@ -86,7 +86,7 @@ class FemtoUniverseCascadeSelection

public:
FemtoUniverseCascadeSelection()
: nPtCascadeMinSel(0), nPtCascadeMaxSel(0), nEtaCascadeMaxSel(0), nDCAV0DaughMax(0), nCPAV0Min(0), nTranRadV0Min(0), nTranRadV0Max(0), nV0DecVtxMax(0), nDCACascadeDaughMax(0), nCPACascadeMin(0), nTranRadCascadeMin(0), nTranRadCascadeMax(0), nDecVtxMax(0), nDCAPosToPV(0), nDCANegToPV(0), nDCABachToPV(0), nDCAV0ToPV(0), pTCascadeMin(9999999.), pTCascadeMax(-9999999.), etaCascadeMax(-9999999.), fDCAV0DaughMax(-9999999.), fCPAV0Min(9999999.), fTranRadV0Min(9999999.), fTranRadV0Max(-9999999.), fV0DecVtxMax(-9999999.), fDCACascadeDaughMax(-9999999.), fCPACascadeMin(9999999.), fTranRadCascadeMin(9999999.), fTranRadCascadeMax(-9999999.), fDecVtxMax(-9999999.), fDCAPosToPV(9999999.), fDCANegToPV(9999999.), fDCABachToPV(9999999.), fDCAV0ToPV(9999999.), fV0InvMassLowLimit(1.05), fV0InvMassUpLimit(1.3), fInvMassLowLimitXi(1.25), fInvMassUpLimitXi(1.4), fInvMassLowLimitOmega(1.6), fInvMassUpLimitOmega(1.8) /*, fRejectCompetingMass(false), fInvMassCompetingLowLimit(1.5), fInvMassCompetingUpLimit(2.0), nSigmaPIDOffsetTPC(0.)*/
: nPtCascadeMinSel(0), nPtCascadeMaxSel(0), nEtaCascadeMaxSel(0), nDCAV0DaughMax(0), nCPAV0Min(0), nTranRadV0Min(0), nTranRadV0Max(0), nV0DecVtxMax(0), nDCACascadeDaughMax(0), nCPACascadeMin(0), nTranRadCascadeMin(0), nTranRadCascadeMax(0), nDecVtxMax(0), nDCAPosToPV(0), nDCANegToPV(0), nDCABachToPV(0), nDCAV0ToPV(0), pTCascadeMin(9999999.), pTCascadeMax(-9999999.), etaCascadeMax(-9999999.), fDCAV0DaughMax(-9999999.), fCPAV0Min(9999999.), fTranRadV0Min(9999999.), fTranRadV0Max(-9999999.), fV0DecVtxMax(-9999999.), fDCACascadeDaughMax(-9999999.), fCPACascadeMin(9999999.), fTranRadCascadeMin(9999999.), fTranRadCascadeMax(-9999999.), fDecVtxMax(-9999999.), fDCAPosToPV(9999999.), fDCANegToPV(9999999.), fDCABachToPV(9999999.), fDCAV0ToPV(9999999.), fV0InvMassLowLimit(1.05), fV0InvMassUpLimit(1.3), fInvMassLowLimitXi(1.25), fInvMassUpLimitXi(1.4), fInvMassLowLimitOmega(1.6), fInvMassUpLimitOmega(1.8), fRejectCompetingMass(false) /*, fInvMassCompetingLowLimit(1.5), fInvMassCompetingUpLimit(2.0), nSigmaPIDOffsetTPC(0.)*/
{
}

Expand Down Expand Up @@ -176,6 +176,13 @@ class FemtoUniverseCascadeSelection
fInvMassCompetingUpLimit = upLimit;
}*/

/// Set whether to reject competing mass for Omega
/// \param reject Boolean flag
void setRejectCompetingMassOmega(bool reject)
{
fRejectCompetingMass = reject;
}

private:
int nPtCascadeMinSel;
int nPtCascadeMaxSel;
Expand Down Expand Up @@ -227,6 +234,8 @@ class FemtoUniverseCascadeSelection

// float nSigmaPIDOffsetTPC;

bool fRejectCompetingMass;

FemtoUniverseTrackSelection posDaughTrack;
FemtoUniverseTrackSelection negDaughTrack;
FemtoUniverseTrackSelection bachTrackSel;
Expand Down Expand Up @@ -437,11 +446,15 @@ bool FemtoUniverseCascadeSelection::isSelectedMinimal(Col const& col, Casc const
const float invMassXi = cascade.mXi();
const float invMassOmega = cascade.mOmega();

// Check individual mass window hypotheses
const bool isXi = (invMassXi >= fInvMassLowLimitXi && invMassXi <= fInvMassUpLimitXi);
const bool isOmega = (invMassOmega >= fInvMassLowLimitOmega && invMassOmega <= fInvMassUpLimitOmega);
const bool passOmega = isOmega && (!fRejectCompetingMass || !isXi);

if (invMassLambda < fV0InvMassLowLimit || invMassLambda > fV0InvMassUpLimit) {
return false;
}
// Accepts the cascade candidates as either Xi or Omega but not both
if ((invMassXi < fInvMassLowLimitXi || invMassXi > fInvMassUpLimitXi) == (invMassOmega < fInvMassLowLimitOmega || invMassOmega > fInvMassUpLimitOmega)) {
if (!isXi && !passOmega) {
return false;
}
/*if (fRejectCompetingMass) {
Expand Down
5 changes: 3 additions & 2 deletions PWGCF/FemtoUniverse/TableProducer/femtoUniverseProducerTask.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -324,6 +324,7 @@ struct FemtoUniverseProducerTask {
Configurable<float> confXiInvMassUpLimit{"confXiInvMassUpLimit", 1.40, "Upper limit of the Xi invariant mass"};
Configurable<float> confOmegaInvMassLowLimit{"confOmegaInvMassLowLimit", 1.60, "Lower limit of the Omega invariant mass"};
Configurable<float> confOmegaInvMassUpLimit{"confOmegaInvMassUpLimit", 1.80, "Upper limit of the Omega invariant mass"};
Configurable<bool> confRejectCompetingMassOmega{"confRejectCompetingMassOmega", false, "Switch to reject competing mass for Omega"};
} ConfCascadeSelection;

// PHI
Expand Down Expand Up @@ -692,15 +693,15 @@ struct FemtoUniverseProducerTask {
cascadeCuts.setChildCuts(femto_universe_cascade_selection::kBachTrack, ConfCascadeSelection.confCascChildTPCnClsMin, femto_universe_track_selection::kTPCnClsMin, femto_universe_selection::kLowerLimit);
cascadeCuts.setChildCuts(femto_universe_cascade_selection::kBachTrack, ConfCascadeSelection.confCascChildPIDnSigmaMax, femto_universe_track_selection::kPIDnSigmaMax, femto_universe_selection::kAbsUpperLimit);

// TODO
cascadeCuts.setChildPIDSpecies(femto_universe_cascade_selection::kPosTrack, ConfV0Selection.confChildPIDspecies);
cascadeCuts.setChildPIDSpecies(femto_universe_cascade_selection::kNegTrack, ConfV0Selection.confChildPIDspecies);
cascadeCuts.setChildPIDSpecies(femto_universe_cascade_selection::kBachTrack, ConfCascadeSelection.confCascChildPIDspecies);

// check if works correctly for bachelor track
cascadeCuts.init<aod::femtouniverseparticle::ParticleType::kCascade, aod::femtouniverseparticle::ParticleType::kV0Child, aod::femtouniverseparticle::ParticleType::kCascadeBachelor, aod::femtouniverseparticle::CutContainerType>(&cascadeQaRegistry);
// invmass cuts
// invmass cuts & competing mass rejection
cascadeCuts.setInvMassLimits(ConfCascadeSelection.confXiInvMassLowLimit, ConfCascadeSelection.confOmegaInvMassLowLimit, ConfCascadeSelection.confXiInvMassUpLimit, ConfCascadeSelection.confOmegaInvMassUpLimit);
cascadeCuts.setRejectCompetingMassOmega(ConfCascadeSelection.confRejectCompetingMassOmega);
}

if (ConfGeneral.confIsActivatePhi) {
Expand Down
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