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[PWGHF] Add single-track selection on D0 for D* #17631

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Merged
fgrosa merged 1 commit into from
Aug 27, 2026
Merged

[PWGHF] Add single-track selection on D0 for D* #17631

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20 changes: 19 additions & 1 deletion PWGHF/TableProducer/candidateSelectorDstarToD0Pi.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,10 @@ struct HfCandidateSelectorDstarToD0Pi {
Configurable<std::vector<double>> binsPtDstar{"binsPtDstar", std::vector<double>{hf_cuts_dstar_to_d0_pi::vecBinsPt}, "pT bin limits for Dstar"};
Configurable<LabeledArray<double>> cutsDstar{"cutsDstar", {hf_cuts_dstar_to_d0_pi::Cuts[0], hf_cuts_dstar_to_d0_pi::NBinsPt, hf_cuts_dstar_to_d0_pi::NCutVars, hf_cuts_dstar_to_d0_pi::labelsPt, hf_cuts_dstar_to_d0_pi::labelsCutVar}, "Dstar candidate selection per pT bin"};

// Single-track DCA selections
Configurable<LabeledArray<double>> cutsSingleTrack{"cutsSingleTrack", {hf_cuts_single_track::CutsTrack[0], hf_cuts_single_track::NBinsPtTrack, hf_cuts_single_track::NCutVarsTrack, hf_cuts_single_track::labelsPtTrack, hf_cuts_single_track::labelsCutVarTrack}, "Single-track selections"};
Configurable<std::vector<double>> binsPtTrack{"binsPtTrack", std::vector<double>{hf_cuts_single_track::vecBinsPtTrack}, "track pT bin limits for DCA pT-dependent cut"};

// common Configurable
// TPC PID
Configurable<double> ptPidTpcMin{"ptPidTpcMin", 0.15, "Minimum track pT for TPC PID"};
Expand Down Expand Up @@ -168,6 +172,17 @@ struct HfCandidateSelectorDstarToD0Pi {
}
}

/// Single-track cuts
/// \param candidate is the Dstar candidate
/// \return true if all the prongs pass the selections
template <typename T1>
bool isSelectedCandidateProngDca(const T1& candidate)
{
// Applied only on D0 tracks, to mimic the skimming selections
return (isSelectedTrackDca(binsPtTrack, cutsSingleTrack, candidate.ptProng0(), candidate.impactParameter0(), candidate.impactParameterZ0()) &&
isSelectedTrackDca(binsPtTrack, cutsSingleTrack, candidate.ptProng1(), candidate.impactParameter1(), candidate.impactParameterZ1()));
}

/// Conjugate-independent topological cuts on D0
/// @brief Topological selection on D0 candidate from Dstar
/// @tparam T table iterator type of the candidate
Expand All @@ -182,6 +197,10 @@ struct HfCandidateSelectorDstarToD0Pi {
return false;
}

if (!isSelectedCandidateProngDca(candidate)) {
return false;
}

// check that the candidate pT is within the analysis range
if (candpT < ptD0CandMin || candpT >= ptD0CandMax) {
return false;
Expand Down Expand Up @@ -357,7 +376,6 @@ struct HfCandidateSelectorDstarToD0Pi {
void process(TracksSel const&,
HfFullDstarCandidate const& rowsDstarCand)
{
// LOG(info) << "selector called";
for (const auto& candDstar : rowsDstarCand) {
// final selection flag: false - rejected, true - accepted
bool statusDstar = false, statusD0Flag = false, statusTopol = false, statusCand = false, statusPID = false;
Expand Down
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