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[PWGLF] add mixing procedure #17100

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Merged
romainschotter merged 3 commits into from
Jul 17, 2026
+43 −0
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[PWGLF] add mixing procedure #17100

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ecaf2db
add mixing procedure
jikim1290 Jul 17, 2026
3d5fa32
Please consider the following formatting changes
alibuild Jul 17, 2026
4d31498
Merge pull request #204 from alibuild/alibot-cleanup-17100
jikim1290 Jul 17, 2026
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43 changes: 43 additions & 0 deletions PWGLF/Tasks/Strangeness/lambdaTwoPartPolarization.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -176,10 +176,14 @@ struct LfLambdaTwoPartPolarization {
histos.add("Ana/SignalCos2", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, cosSigAxis}});
histos.add("Ana/Acceptance", "", {HistType::kTHnSparseF, {ptAxis, centAxis, rapAxis, cosAccAxis}});

histos.add("AnaHL/LambdaSignal", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, massAxis, cosSigAxis}});
histos.add("AnaHL/ALambdaSignal", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, massAxis, cosSigAxis}});

histos.add("AnaHL/LambdaSignalSin2", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, massAxis, cosSigAxis}});
histos.add("AnaHL/LambdaSignalCos2", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, massAxis, cosSigAxis}});
histos.add("AnaHL/ALambdaSignalSin2", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, massAxis, cosSigAxis}});
histos.add("AnaHL/ALambdaSignalCos2", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis, massAxis, cosSigAxis}});

histos.add("AnaHL/Ref", "", {HistType::kTHnSparseF, {ptAxis, ptAxis, detaAxis, dphiAxis, centAxis}});

fMultPVCutLow = new TF1("fMultPVCutLow", "[0]+[1]*x+[2]*x*x+[3]*x*x*x - 2.5*([4]+[5]*x+[6]*x*x+[7]*x*x*x+[8]*x*x*x*x)", 0, 100);
Expand Down Expand Up @@ -403,10 +407,12 @@ struct LfLambdaTwoPartPolarization {
weight *= cfgAccCor ? 1.0 / AccMap->GetBinContent(AccMap->GetXaxis()->FindBin(v01.pt()), AccMap->GetYaxis()->FindBin(v01.yLambda())) : 1.;

if (LambdaTag) {
histos.fill(HIST("AnaHL/LambdaSignal"), trk.pt(), v01.pt(), v01.yLambda() - trk.eta(), dphi, centrality, v01.mLambda(), costhetastar1 * weight);
histos.fill(HIST("AnaHL/LambdaSignalSin2"), trk.pt(), v01.pt(), v01.yLambda() - trk.eta(), dphi, centrality, v01.mLambda(), costhetastar1 * std::sin(2.0 * dphi) * weight);
histos.fill(HIST("AnaHL/LambdaSignalCos2"), trk.pt(), v01.pt(), v01.yLambda() - trk.eta(), dphi, centrality, v01.mLambda(), costhetastar1 * std::cos(2.0 * dphi) * weight);
}
if (aLambdaTag) {
histos.fill(HIST("AnaHL/ALambdaSignal"), trk.pt(), v01.pt(), v01.yLambda() - trk.eta(), dphi, centrality, v01.mAntiLambda(), costhetastar1 * weight);
histos.fill(HIST("AnaHL/ALambdaSignalSin2"), trk.pt(), v01.pt(), v01.yLambda() - trk.eta(), dphi, centrality, v01.mAntiLambda(), costhetastar1 * std::sin(2.0 * dphi) * weight);
histos.fill(HIST("AnaHL/ALambdaSignalCos2"), trk.pt(), v01.pt(), v01.yLambda() - trk.eta(), dphi, centrality, v01.mAntiLambda(), costhetastar1 * std::cos(2.0 * dphi) * weight);
}
Expand Down Expand Up @@ -654,6 +660,43 @@ struct LfLambdaTwoPartPolarization {
}
}
PROCESS_SWITCH(LfLambdaTwoPartPolarization, processDataMixedT0M, "Process event for mixed data in pp", false);

Preslice<TrackCandidates> tracksPerCollisionPri = aod::track::collisionId;

void processDataMixedHadronT0M(EventCandidates const& collisions,
TrackCandidates const& tracks, aod::V0Datas const& V0s, aod::BCsWithTimestamps const&)
{
for (const auto& [c1, c2] : selfCombinations(colBinningT0M, cfgNoMixedEvents, -1, collisions, collisions)) {

if (c1.index() == c2.index()) {
continue;
}

centrality = c1.centFT0M();
if (cfgAccCor) {
auto bc = c1.bc_as<aod::BCsWithTimestamps>();
AccMap = ccdb->getForTimeStamp<TProfile2D>(cfgAccCorPath.value, bc.timestamp());
}
if (!eventSelected(c1)) {
continue;
}
if (!eventSelected(c2)) {
continue;
}

auto v01tracks = V0s.sliceBy(tracksPerCollisionV0, c1.globalIndex());
auto v02tracks = V0s.sliceBy(tracksPerCollisionV0, c2.globalIndex());

auto pri1tracks = tracks.sliceBy(tracksPerCollisionPri, c1.globalIndex());
auto pri2tracks = tracks.sliceBy(tracksPerCollisionPri, c2.globalIndex());

FillHistogramsRef(pri1tracks, pri2tracks);

FillHistogramsLH(c1, v01tracks, pri2tracks);
FillHistogramsLH(c2, v02tracks, pri1tracks);
}
}
PROCESS_SWITCH(LfLambdaTwoPartPolarization, processDataMixedHadronT0M, "Process event for mixed data in pp with hadrons", false);
};

WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
Expand Down
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