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[PWGLF] Add min. and max. rapidity cuts#17382

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romainschotter merged 1 commit into from
Aug 8, 2026
+12 −6
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[PWGLF] Add min. and max. rapidity cuts #17382

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18 changes: 12 additions & 6 deletions PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx
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Original file line numberDiff line numberDiff line change
Expand Up@@ -188,7 +188,8 @@
Configurable<int> v0TypeSelection{"v0TypeSelection", 1, "select on a certain V0 type (leave negative if no selection desired)"};

// Selection criteria: acceptance
Configurable<float> rapidityCut{"rapidityCut", 0.5, "rapidity"};
Configurable<float> rapidityMinCut{"rapidityMinCut", -0.5, "min rapidity"};
Configurable<float> rapidityMaxCut{"rapidityMaxCut", 0.5, "max rapidity"};
Configurable<float> daughterEtaCut{"daughterEtaCut", 0.8, "max eta for daughters"};

// Standard 5 topological criteria
Expand DownExpand Up@@ -546,21 +547,21 @@
BITSET(maskTrackProperties, selPosDeepSec);
BITSET(maskTrackProperties, selPosGoodTPCTrack);
// TPC signal is available: ask for positive track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTPCPIDPositivePion);
BITSET(maskLambdaSpecific, selTPCPIDPositiveProton);
BITSET(maskAntiLambdaSpecific, selTPCPIDPositivePion);
}
// TOF PID
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutK0Pi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTOFNSigmaPositivePionK0Short);
BITSET(maskK0ShortSpecific, selTOFDeltaTPositivePionK0Short);
}
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPr < 1e+5 || v0Selections.maxDeltaTimeProton < 1e+6) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskLambdaSpecific, selTOFNSigmaPositiveProtonLambda);
BITSET(maskLambdaSpecific, selTOFDeltaTPositiveProtonLambda);
}
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskAntiLambdaSpecific, selTOFNSigmaPositivePionLambda);
BITSET(maskAntiLambdaSpecific, selTOFDeltaTPositivePionLambda);
}
Expand All@@ -568,21 +569,21 @@
BITSET(maskTrackProperties, selPosGoodTPCTrack);
BITSET(maskTrackProperties, selPosGoodITSTrack);
// TPC signal is available: ask for positive track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTPCPIDPositivePion);
BITSET(maskLambdaSpecific, selTPCPIDPositiveProton);
BITSET(maskAntiLambdaSpecific, selTPCPIDPositivePion);
}
// TOF PID
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutK0Pi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 578 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTOFNSigmaPositivePionK0Short);
BITSET(maskK0ShortSpecific, selTOFDeltaTPositivePionK0Short);
}
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPr < 1e+5 || v0Selections.maxDeltaTimeProton < 1e+6) { // safeguard for no cut

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskLambdaSpecific, selTOFNSigmaPositiveProtonLambda);
BITSET(maskLambdaSpecific, selTOFDeltaTPositiveProtonLambda);
}
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requirePosHasTOF || v0Selections.tofPidNsigmaCutLaPi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 586 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskAntiLambdaSpecific, selTOFNSigmaPositivePionLambda);
BITSET(maskAntiLambdaSpecific, selTOFDeltaTPositivePionLambda);
}
Expand All@@ -597,13 +598,13 @@
BITSET(maskTrackProperties, selNegDeepSec);
BITSET(maskTrackProperties, selNegGoodTPCTrack);
// TPC signal is available: ask for negative track PID
if (v0Selections.tpcPidNsigmaCut < 1e+5) { // safeguard for no cut

Check failure on line 601 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTPCPIDNegativePion);
BITSET(maskLambdaSpecific, selTPCPIDNegativePion);
BITSET(maskAntiLambdaSpecific, selTPCPIDNegativeProton);
}
// TOF PID
if (v0Selections.requireAtLeastOneHasTOF || v0Selections.requireNegHasTOF || v0Selections.tofPidNsigmaCutK0Pi < 1e+5 || v0Selections.maxDeltaTimePion < 1e+6) { // safeguard for no cut

Check failure on line 607 in PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
BITSET(maskK0ShortSpecific, selTOFNSigmaNegativePionK0Short);
BITSET(maskK0ShortSpecific, selTOFDeltaTNegativePionK0Short);
}
Expand DownExpand Up@@ -1381,9 +1382,11 @@
BITSET(bitMap, selDCAV0Dau);

// rapidity
if (std::abs(rapidityLambda) < v0Selections.rapidityCut)
if (rapidityLambda > v0Selections.rapidityMinCut &&
rapidityLambda < v0Selections.rapidityMaxCut)
BITSET(bitMap, selLambdaRapidity);
if (std::abs(rapidityK0Short) < v0Selections.rapidityCut)
if (rapidityK0Short > v0Selections.rapidityMinCut &&
rapidityK0Short < v0Selections.rapidityMaxCut)
BITSET(bitMap, selK0ShortRapidity);

//
Expand DownExpand Up@@ -2242,7 +2245,8 @@
if (std::abs(v0mother.pdgCode()) == o2::constants::physics::Pdg::kXi0)
rapidityXi = RecoDecay::y(std::array{v0mother.px(), v0mother.py(), v0mother.pz()}, o2::constants::physics::MassXi0);

if (std::fabs(rapidityXi) > 0.5f)
if (rapidityXi < v0Selections.rapidityMinCut ||
rapidityXi > v0Selections.rapidityMaxCut)
return; // not a valid mother rapidity (PDG selection is later)

// __________________________________________
Expand DownExpand Up@@ -2993,7 +2997,8 @@
else if (std::abs(v0MC.pdgCode()) == PDG_t::kLambda0)
ymc = v0MC.rapidityMC(1);

if (std::abs(ymc) > v0Selections.rapidityCut)
if (ymc < v0Selections.rapidityMinCut ||
ymc > v0Selections.rapidityMaxCut)
continue;

auto mcCollision = v0MC.template straMCCollision_as<soa::Join<aod::StraMCCollisions, aod::StraMCCollMults>>();
Expand DownExpand Up@@ -3058,7 +3063,8 @@
else if (std::abs(cascMC.pdgCode()) == PDG_t::kOmegaMinus)
ymc = cascMC.rapidityMC(2);

if (std::abs(ymc) > v0Selections.rapidityCut)
if (ymc < v0Selections.rapidityMinCut ||
ymc > v0Selections.rapidityMaxCut)
continue;

auto mcCollision = cascMC.template straMCCollision_as<soa::Join<aod::StraMCCollisions, aod::StraMCCollMults>>();
Expand Down
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