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[PWGHF] Add UPC ZDC timing cut configuration to hfEvSel #17447

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Merged
zhangbiao-phy merged 1 commit into from
Aug 14, 2026
Merged

[PWGHF] Add UPC ZDC timing cut configuration to hfEvSel #17447

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9 changes: 6 additions & 3 deletions PWGHF/Utils/utilsEvSelHf.h
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Original file line number Diff line number Diff line change
Expand Up @@ -211,6 +211,7 @@ struct HfEventSelection : o2::framework::ConfigurableGroup {
o2::framework::Configurable<bool> rctCheckZDC{"rctCheckZDC", false, "RCT flag to check whether the ZDC is present or not"};
o2::framework::Configurable<bool> rctTreatLimitedAcceptanceAsBad{"rctTreatLimitedAcceptanceAsBad", false, "RCT flag to reject events with limited acceptance for selected detectors"};
o2::framework::Configurable<std::string> irSource{"irSource", "", "Estimator of the interaction rate (Empty: automatically set. Otherwise recommended: pp --> T0VTX, Pb-Pb --> ZNC hadronic)"};
o2::framework::Configurable<bool> useUpcZdcTimeCut{"useUpcZdcTimeCut", true, "Apply ZDC time selection for UPC neutron class"};
o2::framework::Configurable<float> upcZdcTimeMin{"upcZdcTimeMin", -2.f, "Minimum ZDC time for UPC neutron class selection (ns)"};
o2::framework::Configurable<float> upcZdcTimeMax{"upcZdcTimeMax", 2.f, "Maximum ZDC time for UPC neutron class selection (ns)"};

Expand Down Expand Up @@ -463,9 +464,11 @@ struct HfEventSelection : o2::framework::ConfigurableGroup {
if (upcEventType > o2::aod::sgselector::DoubleGap) {
SETBIT(rejectionMaskWithUpc, EventRejection::UpcEventCut);
} else {
const auto upcZdcNeutronClass = getUpcZdcNeutronClass(*sgSelectionResult.bc, upcZdcTimeMin, upcZdcTimeMax);
if (upcZdcNeutronClass != UpcZdcNeutronClassSelection::kXn0n && upcZdcNeutronClass != UpcZdcNeutronClassSelection::k0nXn) {
SETBIT(rejectionMaskWithUpc, EventRejection::UpcZdcNeutronClass);
if (useUpcZdcTimeCut) {
const auto upcZdcNeutronClass = getUpcZdcNeutronClass(*sgSelectionResult.bc, upcZdcTimeMin, upcZdcTimeMax);
if (upcZdcNeutronClass != UpcZdcNeutronClassSelection::kXn0n && upcZdcNeutronClass != UpcZdcNeutronClassSelection::k0nXn) {
SETBIT(rejectionMaskWithUpc, EventRejection::UpcZdcNeutronClass);
}
}
hUpCollisions->Fill(upcEventType);
}
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