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[PWGCF] Adding the option to only cut ITS layer 0-3 #15439

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[PWGCF] Adding the option to only cut ITS layer 0-3 #15439

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MartijnLaarhoven Mar 18, 2026
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Merge pull request #27 from MartijnLaarhoven/MartijnLaarhoven-patch-23
MartijnLaarhoven Mar 18, 2026
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30 changes: 19 additions & 11 deletions PWGCF/TwoParticleCorrelations/Tasks/longRangeDihadronCor.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,7 @@ struct LongRangeDihadronCor {
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodZvtxFT0vsPV, bool, false, "removes collisions with large differences between z of PV by tracks and z of PV from FT0 A-C time difference, use this cut at low multiplicities with caution")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoCollInTimeRangeStandard, bool, false, "no collisions in specified time range")
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayersAll, bool, true, "cut time intervals with dead ITS staves")
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayer0123, bool, false, "cut time intervals with dead ITS staves (layers 0-3 only, for pp)")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoCollInRofStandard, bool, false, "no other collisions in this Readout Frame with per-collision multiplicity above threshold")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoHighMultCollInPrevRof, bool, false, "veto an event if FT0C amplitude in previous ITS ROF is above threshold")
O2_DEFINE_CONFIGURABLE(cfgEvSelMultCorrelation, bool, true, "Multiplicity correlation cut")
Expand Down Expand Up @@ -312,19 +313,20 @@ struct LongRangeDihadronCor {

// Event Counter
if ((doprocessSameTpcFt0a || doprocessSameTpcFt0c || doprocessSameFt0aFt0c) && cfgUseAdditionalEventCut) {
registry.add("hEventCountSpecific", "Number of Event;; Count", {HistType::kTH1D, {{12, 0, 12}}});
registry.add("hEventCountSpecific", "Number of Event;; Count", {HistType::kTH1D, {{13, 0, 13}}});
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(1, "after sel8");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(2, "kNoSameBunchPileup");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(3, "kNoITSROFrameBorder");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(4, "kNoTimeFrameBorder");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(5, "kIsGoodZvtxFT0vsPV");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(6, "kNoCollInTimeRangeStandard");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(7, "kIsGoodITSLayersAll");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(8, "kNoCollInRofStandard");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(9, "kNoHighMultCollInPrevRof");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(10, "occupancy");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(11, "MultCorrelation");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(12, "cfgEvSelV0AT0ACut");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(8, "kIsGoodITSLayer0123");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(9, "kNoCollInRofStandard");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(10, "kNoHighMultCollInPrevRof");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(11, "occupancy");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(12, "MultCorrelation");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(13, "cfgEvSelV0AT0ACut");
}

if (cfgEvSelMultCorrelation) {
Expand Down Expand Up @@ -930,23 +932,29 @@ struct LongRangeDihadronCor {
}
if (fillCounter && cfgEvSelkIsGoodITSLayersAll)
registry.fill(HIST("hEventCountSpecific"), 6.5);
if (cfgEvSelkIsGoodITSLayer0123 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer0123)) {
// for pp: cut time intervals with dead ITS staves on layers 0-3 only
return 0;
}
if (fillCounter && cfgEvSelkIsGoodITSLayer0123)
registry.fill(HIST("hEventCountSpecific"), 7.5);
if (cfgEvSelkNoCollInRofStandard && !collision.selection_bit(o2::aod::evsel::kNoCollInRofStandard)) {
// no other collisions in this Readout Frame with per-collision multiplicity above threshold
return 0;
}
if (fillCounter && cfgEvSelkNoCollInRofStandard)
registry.fill(HIST("hEventCountSpecific"), 7.5);
registry.fill(HIST("hEventCountSpecific"), 8.5);
if (cfgEvSelkNoHighMultCollInPrevRof && !collision.selection_bit(o2::aod::evsel::kNoHighMultCollInPrevRof)) {
// veto an event if FT0C amplitude in previous ITS ROF is above threshold
return 0;
}
if (fillCounter && cfgEvSelkNoHighMultCollInPrevRof)
registry.fill(HIST("hEventCountSpecific"), 8.5);
registry.fill(HIST("hEventCountSpecific"), 9.5);
auto occupancy = collision.trackOccupancyInTimeRange();
if (cfgEvSelOccupancy && (occupancy < cfgCutOccupancyLow || occupancy > cfgCutOccupancyHigh))
return 0;
if (fillCounter && cfgEvSelOccupancy)
registry.fill(HIST("hEventCountSpecific"), 9.5);
registry.fill(HIST("hEventCountSpecific"), 10.5);

auto multNTracksPV = collision.multNTracksPV();
if (cfgEvSelMultCorrelation) {
Expand Down Expand Up @@ -976,14 +984,14 @@ struct LongRangeDihadronCor {
}
}
if (fillCounter && cfgEvSelMultCorrelation)
registry.fill(HIST("hEventCountSpecific"), 10.5);
registry.fill(HIST("hEventCountSpecific"), 11.5);

// V0A T0A 5 sigma cut
float sigma = 5.0;
if (cfgEvSelV0AT0ACut && (std::fabs(collision.multFV0A() - cfgFuncParas.fT0AV0AMean->Eval(collision.multFT0A())) > sigma * cfgFuncParas.fT0AV0ASigma->Eval(collision.multFT0A())))
return 0;
if (fillCounter && cfgEvSelV0AT0ACut)
registry.fill(HIST("hEventCountSpecific"), 11.5);
registry.fill(HIST("hEventCountSpecific"), 12.5);

return 1;
}
Expand Down
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