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[PWGCF] Changed the implementation of the occupancy cut #13863

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Merged
victor-gonzalez merged 3 commits into from
Nov 18, 2025
Merged

[PWGCF] Changed the implementation of the occupancy cut #13863

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23d0515
Changed the implementation of the occupancy cut
JStaa Nov 17, 2025
a4a3833
Please consider the following formatting changes
alibuild Nov 17, 2025
7e931b7
Merge pull request #45 from alibuild/alibot-cleanup-13863
JStaa Nov 17, 2025
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41 changes: 20 additions & 21 deletions PWGCF/MultiparticleCorrelations/Tasks/threeParticleCorrelations.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,7 @@ struct ThreeParticleCorrelations {
Configurable<float> zvtxMax{"zvtxMax", 10.0, "Maximum collision Z-vertex position (cm)"};
Configurable<int> occupMin{"occupMin", 0, "Minimum collision occupancy"};
Configurable<int> occupMax{"occupMax", 15000, "Maximum collision occupancy"};
Configurable<bool> useOccupCut{"useOccupCut", true, "Use the kNoCollInTimeRangeStandard cut"};
} evSelGroup;

// V0 filter parameters
Expand Down Expand Up @@ -96,7 +97,8 @@ struct ThreeParticleCorrelations {
Filter collCent = aod::cent::centFT0C > centMin&& aod::cent::centFT0C < centMax;
Filter collZvtx = nabs(aod::collision::posZ) < evSelGroup.zvtxMax;
Filter mcCollZvtx = nabs(aod::mccollision::posZ) < evSelGroup.zvtxMax;
Filter evSelect = aod::evsel::sel8 == true;
Filter evSel8 = aod::evsel::sel8 == true;
Filter evSelOccup = o2::aod::evsel::trackOccupancyInTimeRange >= evSelGroup.occupMin && o2::aod::evsel::trackOccupancyInTimeRange < evSelGroup.occupMax;

// Track filters
Filter trackPt = aod::track::pt > trackPtMin&& aod::track::pt < trackPtMax;
Expand Down Expand Up @@ -204,7 +206,7 @@ struct ThreeParticleCorrelations {
rQARegistry.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(1, "All");
rQARegistry.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(2, "kIsGoodZvtxFT0vsPV");
rQARegistry.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(3, "kNoSameBunchPileup");
rQARegistry.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(4, Form("%i < Occupancy < %i", static_cast<int>(evSelGroup.occupMin), static_cast<int>(evSelGroup.occupMax)));
rQARegistry.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(4, Form("[%i < Occupancy < %i)", static_cast<int>(evSelGroup.occupMin), static_cast<int>(evSelGroup.occupMax)));
rQARegistry.get<TH1>(HIST("hNEvents"))->GetXaxis()->SetBinLabel(5, "kNoCollInTimeRangeStandard");

rQARegistry.add("hEventCentrality", "hEventCentrality", {HistType::kTH1D, {{fineCentralityAxis}}});
Expand Down Expand Up @@ -377,7 +379,6 @@ struct ThreeParticleCorrelations {
void processSame(MyFilteredCollision const& collision, aod::V0Datas const& v0s, MyFilteredTracks const& tracks, aod::BCsWithTimestamps const&)
{

rQARegistry.fill(HIST("hEventOccupancy"), collision.trackOccupancyInTimeRange());
if (!acceptEvent(collision, true)) {
return;
}
Expand All @@ -392,6 +393,7 @@ struct ThreeParticleCorrelations {

rQARegistry.fill(HIST("hEventCentrality"), collision.centFT0C());
rQARegistry.fill(HIST("hEventZvtx"), collision.posZ());
rQARegistry.fill(HIST("hEventOccupancy"), collision.trackOccupancyInTimeRange());
rQARegistry.fill(HIST("hEventBfield"), bField);

// Start of the Track QA
Expand Down Expand Up @@ -514,15 +516,18 @@ struct ThreeParticleCorrelations {

// Start of the Mixed-Event correlations
for (const auto& [coll_1, v0_1, coll_2, track_2] : pairData) {
if (!acceptEvent(coll_1, false) || !acceptEvent(coll_2, false)) {
return;
if (!acceptEvent(coll_1, false)) {
continue;
}
if (!acceptEvent(coll_2, false)) {
continue;
}

auto bc = coll_1.bc_as<aod::BCsWithTimestamps>();
auto bField = getMagneticField(bc.timestamp());
if (switchGroup.confBfieldSwitch != 0) {
if (std::signbit(static_cast<double>(switchGroup.confBfieldSwitch)) != std::signbit(bField)) {
return;
continue;
}
}

Expand Down Expand Up @@ -669,12 +674,12 @@ struct ThreeParticleCorrelations {
if (recCollsA1.size() == 1 && recCollsA2.size() == 1) {
for (const auto& recColl_1 : recCollsA1) {
if (!acceptEvent(recColl_1, false)) {
return;
continue;
}
}
for (const auto& recColl_2 : recCollsA2) {
if (!acceptEvent(recColl_2, false)) {
return;
continue;
}
}
}
Expand Down Expand Up @@ -1024,19 +1029,13 @@ struct ThreeParticleCorrelations {
rQARegistry.fill(HIST("hNEvents"), 2.5);
}

int occupEstim = col.trackOccupancyInTimeRange();
if (occupEstim <= evSelGroup.occupMin || occupEstim >= evSelGroup.occupMax) { // Occupancy window
return false;
}
if (FillHist) {
rQARegistry.fill(HIST("hNEvents"), 3.5);
}

if (!col.selection_bit(aod::evsel::kNoCollInTimeRangeStandard)) { // kNoCollInTimeRangeStandard
return false;
}
if (FillHist) {
rQARegistry.fill(HIST("hNEvents"), 4.5);
if (evSelGroup.useOccupCut) {
if (!col.selection_bit(aod::evsel::kNoCollInTimeRangeStandard)) { // kNoCollInTimeRangeStandard
return false;
}
if (FillHist) {
rQARegistry.fill(HIST("hNEvents"), 4.5);
}
}

return true;
Expand Down
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