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[PWGLF] hStrangeCorrelation.cxx: new selection and mirroring option #16741

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romainschotter merged 1 commit into from
Jun 19, 2026
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[PWGLF] hStrangeCorrelation.cxx: new selection and mirroring option #16741

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30 changes: 30 additions & 0 deletions PWGLF/Tasks/Strangeness/hStrangeCorrelation.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,7 @@
Configurable<bool> applyNewMCSelection{"applyNewMCSelection", false, "apply new MC Generated selection"};
Configurable<bool> doSeparateFT0Prediction{"doSeparateFT0Prediction", false, "separate FT0M to FT0A and FT0C in prediction process"};
Configurable<bool> useCentralityinPrediction{"useCentralityinPrediction", false, "if true, use centrality instead of multiplisity"};
Configurable<bool> doMirroringInDelataEta{"doMirroringInDelataEta", false, "if true, fill only positive delta eta and mirror the negative side in post processing, Adjust the delta axis!"};
} masterConfigurations;

// master analysis switches
Expand Down Expand Up @@ -204,13 +205,19 @@
Configurable<bool> checksRequireTPCChi2{"checksRequireTPCChi2", false, "require TPC chi2 per cluster for trigger and associated primary tracks"};
Configurable<bool> requireClusterInITS{"requireClusterInITS", false, "require cluster in ITS for V0 and cascade daughter tracks"};
Configurable<int> minITSClustersForDaughterTracks{"minITSClustersForDaughterTracks", 1, "Minimum number of ITS clusters for V0 daughter tracks"};
Configurable<bool> requireDCAzCut{"requireDCAzCut", false, "require DCAz cut for trigger and associated primary tracks"};

// --- Trigger: DCA variation from basic formula: |DCAxy| < 0.004f + (0.013f / pt)
Configurable<float> dcaXYconstant{"dcaXYconstant", 0.004, "[0] in |DCAxy| < [0]+[1]/pT"};
Configurable<float> dcaXYpTdep{"dcaXYpTdep", 0.013, "[1] in |DCAxy| < [0]+[1]/pT"};
// --- Assoc track: DCA variation from basic formula: |DCAxy| < 0.004f + (0.013f / pt)
Configurable<float> dcaXYconstantAssoc{"dcaXYconstantAssoc", 0.004, "[0] in |DCAxy| < [0]+[1]/pT"};
Configurable<float> dcaXYpTdepAssoc{"dcaXYpTdepAssoc", 0.013, "[1] in |DCAxy| < [0]+[1]/pT"};

Configurable<float> dcaZconstant{"dcaZconstant", 0.004, "[0] in |DCAz| < [0]+[1]/pT"};
Configurable<float> dcaZpTdep{"dcaZpTdep", 0.013, "[1] in |DCAz| < [0]+[1]/pT"};
Configurable<float> dcaZconstantAssoc{"dcaZconstantAssoc", 0.004, "[0] in |DCAz| < [0]+[1]/pT"};
Configurable<float> dcaZpTdepAssoc{"dcaZpTdepAssoc", 0.013, "[1] in |DCAz| < [0]+[1]/pT"};
Configurable<int> dEdxCompatibility{"dEdxCompatibility", 1, "0: loose, 1: normal, 2: tight. Defined in HStrangeCorrelationFilter"};
} trackSelection;
struct : ConfigurableGroup {
Expand Down Expand Up @@ -594,6 +601,10 @@
if (std::abs(track.dcaXY()) > trackSelection.dcaXYconstant + trackSelection.dcaXYpTdep * std::abs(track.signed1Pt())) {
return false;
}
// systematic variations: trigger DCAz
if (trackSelection.requireDCAzCut && std::abs(track.dcaZ()) > trackSelection.dcaZconstant + trackSelection.dcaZpTdep * std::abs(track.signed1Pt())) {
return false;
}
if (track.pt() > axisRanges[3][1] || track.pt() < axisRanges[3][0]) {
return false;
}
Expand Down Expand Up @@ -627,6 +638,10 @@
if (std::abs(track.dcaXY()) > trackSelection.dcaXYconstantAssoc + trackSelection.dcaXYpTdepAssoc * std::abs(track.signed1Pt())) {
return false;
}
// systematic variations: trigger DCAz
if (trackSelection.requireDCAzCut && std::abs(track.dcaZ()) > trackSelection.dcaZconstantAssoc + trackSelection.dcaZpTdepAssoc * std::abs(track.signed1Pt())) {
return false;
}
if (track.pt() > axisRanges[2][1] || track.pt() < axisRanges[2][0]) {
return false;
}
Expand Down Expand Up @@ -905,6 +920,9 @@
if (efficiencyFlags.applyEfficiencyPropagation) {
totalEffUncert = std::sqrt(std::pow(efficiencyTrigg * efficiencyError, 2) + std::pow(efficiencyTriggError * efficiency, 2));
}
if (masterConfigurations.doMirroringInDelataEta) {
deltaeta = std::abs(deltaeta);
}
double binFillThn[6] = {deltaphi, deltaeta, ptassoc, pttrigger, pvz, mult};
if (TESTBIT(doCorrelation, Index) && (!efficiencyFlags.applyEfficiencyCorrection || efficiency != 0) && (masterConfigurations.doPPAnalysis || (TESTBIT(selMap, Index) && TESTBIT(selMap, Index + 3)))) {
if (assocCandidate.compatible(Index, trackSelection.dEdxCompatibility) && (!masterConfigurations.doMCassociation || assocCandidate.mcTrue(Index)) && (!doAssocPhysicalPrimary || assocCandidate.mcPhysicalPrimary()) && !mixing && -massWindowConfigurations.maxBgNSigma < assocCandidate.invMassNSigma(Index) && assocCandidate.invMassNSigma(Index) < -massWindowConfigurations.minBgNSigma) {
Expand Down Expand Up @@ -999,9 +1017,9 @@
int binnumb = binMult * nBinsVtxZ + binVtxZ;
int hastirgorassoc = masterConfigurations.collisionHasTriggOrAssoc;
if ((hastirgorassoc == 1 && currentCollision.trigParticles.empty()) ||
(hastirgorassoc == 2 && currentCollision.assocParticles.empty()) ||

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
(hastirgorassoc == 3 && currentCollision.trigParticles.empty() && currentCollision.assocParticles.empty()) ||

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
(hastirgorassoc == 4 && (currentCollision.trigParticles.empty() || currentCollision.assocParticles.empty())))

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
return;
for (const auto& collision : validCollisions[binnumb]) {
BinningTypePP colBinning{{axesConfigurations.axisVtxZ, axesConfigurations.axisMult}, true};
Expand All @@ -1025,6 +1043,9 @@
if (efficiencyFlags.applyEfficiencyPropagation) {
totalEffUncert = std::sqrt(std::pow(efficiencyTrigg * efficiencyAssocError, 2) + std::pow(efficiencyTriggError * efficiencyAssoc, 2));
}
if (masterConfigurations.doMirroringInDelataEta) {
deltaeta = std::abs(deltaeta);
}
double binFillThn[6] = {deltaphi, deltaeta, ptassoc, pttrigger, pvz, mult};
static_for<0, 2>([&](auto i) {
constexpr int Index = i.value;
Expand All @@ -1034,7 +1055,7 @@
if (Index == assoc.type && assoc.region == 1) {
fillCorrelationHistogram(histos.get<THn>(HIST("mixedEvent/Signal/") + HIST(V0names[Index])), binFillThn, 1, efficiencyTrigg * efficiencyAssoc, totalEffUncert, 1., 0.);
}
if (Index == assoc.type && assoc.region == 2) {

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Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
fillCorrelationHistogram(histos.get<THn>(HIST("mixedEvent/RightBg/") + HIST(V0names[Index])), binFillThn, 1, efficiencyTrigg * efficiencyAssoc, totalEffUncert, 1., 0.);
}
});
Expand Down Expand Up @@ -1243,6 +1264,9 @@
if (efficiencyFlags.applyEfficiencyPropagation) {
totalEffUncert = std::sqrt(std::pow(efficiencyTrigg * efficiencyError, 2) + std::pow(efficiencyTriggError * efficiency, 2));
}
if (masterConfigurations.doMirroringInDelataEta) {
deltaeta = std::abs(deltaeta);
}
double binFillThn[6] = {deltaphi, deltaeta, ptassoc, pttrigger, pvz, mult};
if (TESTBIT(doCorrelation, Index + 3) && (!efficiencyFlags.applyEfficiencyCorrection || efficiency != 0) && (masterConfigurations.doPPAnalysis || (TESTBIT(cascselMap, Index) && TESTBIT(cascselMap, Index + 4) && TESTBIT(cascselMap, Index + 8) && TESTBIT(cascselMap, Index + 12)))) {
if (assocCandidate.compatible(Index, trackSelection.dEdxCompatibility) && (!masterConfigurations.doMCassociation || assocCandidate.mcTrue(Index)) && (!doAssocPhysicalPrimary || assocCandidate.mcPhysicalPrimary()) && !mixing && -massWindowConfigurations.maxBgNSigma < assocCandidate.invMassNSigma(Index) && assocCandidate.invMassNSigma(Index) < -massWindowConfigurations.minBgNSigma) {
Expand Down Expand Up @@ -1305,9 +1329,9 @@
int binnumb = binMult * nBinsVtxZ + binVtxZ;
int hastirgorassoc = masterConfigurations.collisionHasTriggOrAssoc;
if ((hastirgorassoc == 1 && currentCollision.trigParticles.empty()) ||
(hastirgorassoc == 2 && currentCollision.assocParticles.empty()) ||

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(hastirgorassoc == 3 && currentCollision.trigParticles.empty() && currentCollision.assocParticles.empty()) ||

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Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
(hastirgorassoc == 4 && (currentCollision.trigParticles.empty() || currentCollision.assocParticles.empty())))

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return;
for (const auto& collision : validCollisions[binnumb]) {
BinningTypePP colBinning{{axesConfigurations.axisVtxZ, axesConfigurations.axisMult}, true};
Expand All @@ -1326,6 +1350,9 @@
if (efficiencyFlags.applyEfficiencyPropagation) {
totalEffUncert = std::sqrt(std::pow(efficiencyTrigg * efficiencyAssocError, 2) + std::pow(efficiencyTriggError * efficiencyAssoc, 2));
}
if (masterConfigurations.doMirroringInDelataEta) {
deltaeta = std::abs(deltaeta);
}
double binFillThn[6] = {deltaphi, deltaeta, ptassoc, pttrigger, pvz, mult};
static_for<0, 3>([&](auto i) {
constexpr int Index = i.value;
Expand All @@ -1335,7 +1362,7 @@
if (Index == assoc.type && assoc.region == 1) {
fillCorrelationHistogram(histos.get<THn>(HIST("mixedEvent/Signal/") + HIST(Cascadenames[Index])), binFillThn, 1, efficiencyTrigg * efficiencyAssoc, totalEffUncert, 1., 0.);
}
if (Index == assoc.type && assoc.region == 2) {

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Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
fillCorrelationHistogram(histos.get<THn>(HIST("mixedEvent/RightBg/") + HIST(Cascadenames[Index])), binFillThn, 1, efficiencyTrigg * efficiencyAssoc, totalEffUncert, 1., 0.);
}
});
Expand Down Expand Up @@ -1483,6 +1510,9 @@
totalEffUncert = std::sqrt(std::pow(efficiencyTrigger * efficiencyUncertainty, 2) + std::pow(efficiencyTriggerError * efficiency, 2));
totalPurityUncert = std::sqrt(std::pow(purityTrigger * purityUncertainty, 2) + std::pow(purity * purityTriggerError, 2));
}
if (masterConfigurations.doMirroringInDelataEta) {
deltaeta = std::abs(deltaeta);
}
double binFillThn[6] = {deltaphi, deltaeta, ptassoc, pttrigger, pvz, mult};
double deltaPhiStar = calculateAverageDeltaPhiStar(triggForDeltaPhiStar, assocForDeltaPhiStar, bField);
if (!mixing) {
Expand Down
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