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[PWGCF] Mechanism to choose uniquely reconstructed D0bars #14709

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Merged
victor-gonzalez merged 1 commit into from
Jan 30, 2026
+9 −7
Merged

[PWGCF] Mechanism to choose uniquely reconstructed D0bars #14709

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5 changes: 3 additions & 2 deletions PWGCF/DataModel/CorrelationsDerived.h
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Original file line number Diff line number Diff line change
Expand Up @@ -139,7 +139,7 @@ DECLARE_SOA_COLUMN(InvMass, invMass, float);
DECLARE_SOA_COLUMN(Decay, decay, uint8_t); //! Particle decay
enum ParticleDecay {
D0ToPiK,
D0barToKPi,
D0barToKPi, // note: often duplicate to D0ToPiK. Choose D0barToKPiExclusive to select uniquely reconstructed D0bars
JPsiToEE,
JPsiToMuMu,
Generic2Prong,
Expand All @@ -156,7 +156,8 @@ enum ParticleDecay {
LambdaToPPiLoose,
LambdaToPPiTight,
AntiLambdaToPiPLoose,
AntiLambdaToPiPTight
AntiLambdaToPiPTight,
D0barToKPiExclusive
};
} // namespace cf2prongtrack
DECLARE_SOA_TABLE(CF2ProngTracks, "AOD", "CF2PRONGTRACK", //! Reduced track table
Expand Down
5 changes: 3 additions & 2 deletions PWGCF/TableProducer/filter2Prong.cxx
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Expand Up @@ -236,7 +236,8 @@ struct Filter2Prong {

if (c.isSelD0bar() > 0) {
output2ProngTracks(cfcollisions.begin().globalIndex(),
prongCFId[0], prongCFId[1], c.pt(), c.eta(), c.phi(), hfHelper.invMassD0barToKPi(c), aod::cf2prongtrack::D0barToKPi);
prongCFId[0], prongCFId[1], c.pt(), c.eta(), c.phi(), hfHelper.invMassD0barToKPi(c),
c.isSelD0() > 0 ? aod::cf2prongtrack::D0barToKPi : aod::cf2prongtrack::D0barToKPiExclusive);
if constexpr (std::experimental::is_detected<HasMLProb, typename HFCandidatesType::iterator>::value) {
mlvecd.clear();
for (const float val : c.mlProbD0())
Expand Down Expand Up @@ -288,7 +289,7 @@ struct Filter2Prong {
}
}
output2ProngMcParts(prongCFId[0], prongCFId[1],
(mcParticle.pdgCode() >= 0 ? aod::cf2prongtrack::D0ToPiK : aod::cf2prongtrack::D0barToKPi) | ((mcParticle.originMcGen() == RecoDecay::OriginType::Prompt) ? aod::cf2prongmcpart::Prompt : 0));
(mcParticle.pdgCode() >= 0 ? aod::cf2prongtrack::D0ToPiK : aod::cf2prongtrack::D0barToKPiExclusive) | ((mcParticle.originMcGen() == RecoDecay::OriginType::Prompt) ? aod::cf2prongmcpart::Prompt : 0));
}
}
PROCESS_SWITCH(Filter2Prong, processMC, "Process MC 2-prong daughters", false);
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6 changes: 3 additions & 3 deletions PWGCF/Tasks/correlations.cxx
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Expand Up @@ -570,7 +570,7 @@ struct CorrelationTask {
}

if constexpr (std::experimental::is_detected<HasMcDecay, typename TTracks1::iterator>::value) {
if (((track1.mcDecay() != aod::cf2prongtrack::D0ToPiK) && (track1.mcDecay() != aod::cf2prongtrack::D0barToKPi)) || (track1.decay() & aod::cf2prongmcpart::Prompt) == 0)
if (((track1.mcDecay() != aod::cf2prongtrack::D0ToPiK) && (track1.mcDecay() != aod::cf2prongtrack::D0barToKPiExclusive)) || (track1.decay() & aod::cf2prongmcpart::Prompt) == 0)
continue;
} else if constexpr (std::experimental::is_detected<HasDecay, typename TTracks1::iterator>::value) {
if (cfgDecayParticleMask != 0 && (cfgDecayParticleMask & (1u << static_cast<uint32_t>(track1.decay()))) == 0u) {
Expand Down Expand Up @@ -653,7 +653,7 @@ struct CorrelationTask {

// If decay attributes are found for the second track/particle, we assume 2p-2p correlation
if constexpr (std::experimental::is_detected<HasMcDecay, typename TTracks2::iterator>::value) {
if ((((track2.mcDecay()) != aod::cf2prongtrack::D0ToPiK) && ((track2.mcDecay()) != aod::cf2prongtrack::D0barToKPi)) || (track2.decay() & aod::cf2prongmcpart::Prompt) == 0)
if ((((track2.mcDecay()) != aod::cf2prongtrack::D0ToPiK) && ((track2.mcDecay()) != aod::cf2prongtrack::D0barToKPiExclusive)) || (track2.decay() & aod::cf2prongmcpart::Prompt) == 0)
continue;
} else if constexpr (std::experimental::is_detected<HasDecay, typename TTracks2::iterator>::value) {
if (cfgDecayParticleMask != 0 && (cfgDecayParticleMask & (1u << static_cast<uint32_t>(track2.decay()))) == 0u) {
Expand Down Expand Up @@ -1180,7 +1180,7 @@ struct CorrelationTask {
p2indexCache.clear();
for (const auto& mcParticle : mcParticles) {
if (std::find(cfgMcTriggerPDGs->begin(), cfgMcTriggerPDGs->end(), mcParticle.pdgCode()) != cfgMcTriggerPDGs->end()) {
if (((mcParticle.mcDecay() != aod::cf2prongtrack::D0ToPiK) && (mcParticle.mcDecay() != aod::cf2prongtrack::D0barToKPi)) || (mcParticle.decay() & aod::cf2prongmcpart::Prompt) == 0)
if (((mcParticle.mcDecay() != aod::cf2prongtrack::D0ToPiK) && (mcParticle.mcDecay() != aod::cf2prongtrack::D0barToKPiExclusive)) || (mcParticle.decay() & aod::cf2prongmcpart::Prompt) == 0)
continue; // wrong decay channel
if (mcParticle.cfParticleDaugh0Id() < 0 && mcParticle.cfParticleDaugh1Id() < 0)
continue; // daughters not found
Expand Down
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