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[PWGLF] Update the cosPA pt dep selection #17373

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[PWGLF] Update the cosPA pt dep selection #17373

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49 changes: 45 additions & 4 deletions PWGLF/Tasks/Strangeness/derivedcascadeanalysis.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,7 @@ struct Derivedcascadeanalysis {
Configurable<int> nPtBinsForNsigmaTPC{"nPtBinsForNsigmaTPC", 100, ""};
Configurable<std::string> irSource{"irSource", "T0VTX", "Estimator of the interaction rate (Recommended: pp --> T0VTX, Pb-Pb --> ZNC hadronic)"};
Configurable<std::string> ccdburl{"ccdburl", "http://alice-ccdb.cern.ch", "url of the ccdb repository"};
Configurable<std::string> histoCCDBPath{"histoCCDBPath", "Users/l/lhusova/LHC2025/PointingAngleSelection", "Path for the selection histograms in the CCDB"};

o2::aod::rctsel::RCTFlagsChecker rctFlagsChecker{rctConfigurations.cfgRCTLabel.value};

Expand Down Expand Up @@ -201,6 +202,7 @@ struct Derivedcascadeanalysis {
Configurable<bool> doAtLeastOneTrackAB{"doAtLeastOneTrackAB", false, "require that at least one of the daughter tracks is from Afterburner"};
Configurable<bool> doBachelorITSTracking{"doBachelorITSTracking", false, "require that the bachelor track is from the ITS tracking"};
Configurable<bool> doAllTracksMinITSClusters{"doAllTracksMinITSClusters", false, "require that all daughter tracks have minimal ITS hits"};
Configurable<bool> useInterpolationForCosPACut{"useInterpolationForCosPACut", true, "use interpolation for pt dependent cosPA cut"};
} candidateSelectionFlags;

struct : ConfigurableGroup {
Expand Down Expand Up @@ -256,6 +258,11 @@ struct Derivedcascadeanalysis {
Configurable<float> dcaCacsDauPtSelectionHigh{"dcaCacsDauPtSelectionHigh", 4.0, "high pt selection for range where DCA selection changes to Par2"};
} candidateSelectionValues;

TH1F* hXiPointingAngleSelection = nullptr;
TH1F* hOmegaPointingAngleSelection = nullptr;
TH1F* hXiLambdaPointingAngleSelection = nullptr;
TH1F* hOmegaLambdaPointingAngleSelection = nullptr;

o2::ccdb::CcdbApi ccdbApi;
Service<o2::ccdb::BasicCCDBManager> ccdb;
ctpRateFetcher rateFetcher;
Expand Down Expand Up @@ -574,6 +581,20 @@ struct Derivedcascadeanalysis {
}
}
}
void initCosPASelectionHistograms(float timeStamp)
{

auto* listHistograms = ccdb->getForTimeStamp<TList>(histoCCDBPath, timeStamp);

if (!listHistograms) {
LOG(fatal) << "Problem getting TList object with histograms!";
}

hOmegaLambdaPointingAngleSelection = dynamic_cast<TH1F*>(listHistograms->FindObject("hOmegaLambdaPointingAngleSelection"));
hXiPointingAngleSelection = dynamic_cast<TH1F*>(listHistograms->FindObject("hXiPointingAngleSelection"));
hOmegaPointingAngleSelection = dynamic_cast<TH1F*>(listHistograms->FindObject("hOmegaPointingAngleSelection"));
hXiLambdaPointingAngleSelection = dynamic_cast<TH1F*>(listHistograms->FindObject("hXiLambdaPointingAngleSelection"));
}
// Return slicing output
template <bool run3, typename TCollisions>
auto getGroupedCollisions(TCollisions const& collisions, int globalIndex)
Expand All @@ -590,12 +611,28 @@ struct Derivedcascadeanalysis {

if (ptdepcut) {
double ptdepCut = -1;
if (isCascPa) {
ptdepCut = candidateSelectionValues.cosPApar0 + candidateSelectionValues.cosPApar1 * casc.pt();
if (candidateSelectionFlags.useInterpolationForCosPACut) {
if (isCascPa) {
if (isXi) {
ptdepCut = hXiPointingAngleSelection->Interpolate(casc.pt());
} else {
ptdepCut = hOmegaPointingAngleSelection->Interpolate(casc.pt());
}
} else {
if (isXi) {
ptdepCut = hXiLambdaPointingAngleSelection->Interpolate(casc.pt());
} else {
ptdepCut = hOmegaLambdaPointingAngleSelection->Interpolate(casc.pt());
}
}
} else {
ptdepCut = candidateSelectionValues.v0cosPApar0 + candidateSelectionValues.v0cosPApar1 * casc.pt();
if (isCascPa) {
ptdepCut = candidateSelectionValues.cosPApar0 + candidateSelectionValues.cosPApar1 * casc.pt();
} else {
ptdepCut = candidateSelectionValues.v0cosPApar0 + candidateSelectionValues.v0cosPApar1 * casc.pt();
}
}
if (ptdepCut > candidateSelectionValues.ptdepCosPACutMaxValue && casc.pt() < candidateSelectionValues.minPtForCosPAcut) {
if (ptdepCut > candidateSelectionValues.ptdepCosPACutMaxValue) {
ptdepCut = candidateSelectionValues.ptdepCosPACutMaxValue;
}
if (ptdepCut < candidateSelectionValues.ptdepCosPACutMinValue) {
Expand Down Expand Up @@ -1209,6 +1246,10 @@ struct Derivedcascadeanalysis {
float nChEta1 = -1;
float occupancy = -2;

if (useInterpolationForCosPACut) {
initCosPASelectionHistograms(coll.timestamp());
}

if constexpr (requires { coll.centFT0C(); }) {
nChEta1 = coll.multNTracksPVeta1();
centrality = coll.centFT0C();
Expand Down
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