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[PWGHF] Add pT-dependent invariant mass cut for Lc->pKpi #17512

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Merged
fgrosa merged 2 commits into from
Aug 19, 2026
Merged

[PWGHF] Add pT-dependent invariant mass cut for Lc->pKpi #17512

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7fa2768
Add pT-dependent invariant mass cut for Lc->pKpi
fgrosa Aug 19, 2026
f615ba6
Add missing header
fgrosa Aug 19, 2026
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8 changes: 8 additions & 0 deletions PWGHF/TableProducer/candidateSelectorLc.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
#include "PWGHF/DataModel/CandidateReconstructionTables.h"
#include "PWGHF/DataModel/CandidateSelectionTables.h"
#include "PWGHF/DataModel/TrackIndexSkimmingTables.h"
#include "PWGHF/Utils/utilsAnalysis.h"

#include "Common/Core/TrackSelectorPID.h"
#include "Common/DataModel/PIDResponseCombined.h"
Expand Down Expand Up @@ -108,6 +109,8 @@ struct HfCandidateSelectorLc {
Configurable<std::vector<std::string>> onnxFileNames{"onnxFileNames", std::vector<std::string>{"ModelHandler_onnx_LcToPKPi.onnx"}, "ONNX file names for each pT bin (if not from CCDB full path)"};
Configurable<int64_t> timestampCCDB{"timestampCCDB", -1, "timestamp of the ONNX file for ML model used to query in CCDB"};
Configurable<bool> loadModelsFromCCDB{"loadModelsFromCCDB", false, "Flag to enable or disable the loading of models from CCDB"};
// Mass Cut for trigger analysis
Configurable<bool> useTriggerMassCut{"useTriggerMassCut", false, "Flag to enable parametrize pT differential mass cut for triggered data"};

o2::analysis::HfMlResponseLcToPKPi<float, aod::hf_cand::VertexerType::DCAFitter> hfMlResponseDCA;
o2::analysis::HfMlResponseLcToPKPi<float, aod::hf_cand::VertexerType::KfParticle> hfMlResponseKF;
Expand All @@ -117,6 +120,7 @@ struct HfCandidateSelectorLc {
TrackSelectorPi selectorPion;
TrackSelectorKa selectorKaon;
TrackSelectorPr selectorProton;
HfTrigger3ProngCuts hfTriggerCuts;

using TracksSel = soa::Join<aod::TracksWExtra,
aod::TracksPidPi, aod::PidTpcTofFullPi, aod::TracksPidKa, aod::PidTpcTofFullKa, aod::TracksPidPr, aod::PidTpcTofFullPr>;
Expand Down Expand Up @@ -327,6 +331,10 @@ struct HfCandidateSelectorLc {
return false;
}

if (useTriggerMassCut && !isCandidateInMassRange(massLc, o2::constants::physics::MassLambdaCPlus, candpT, hfTriggerCuts)) {
return false;
}

/// cut on the Kpi pair invariant mass, to study Lc->pK*(->Kpi)
const double cutMassKPi = cuts->get(pTBin, "mass (Kpi)");
if (cutMassKPi > 0 && std::abs(massKPi - massK0Star892) > cutMassKPi) {
Expand Down
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