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[PWGHF] Add histograms and mass column for Xicp analysis #18254

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[PWGHF] Add histograms and mass column for Xicp analysis #18254

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f5f7fbb
first histogram filling test
hero-seo Oct 9, 2026
644e97e
fixing histo axis grammar
hero-seo Oct 9, 2026
21df68f
update
hero-seo Oct 12, 2026
b97a6c2
apply clang-format
hero-seo Oct 12, 2026
5e692fa
add invariant mass row in HFXICXI2PIFULLP table
hero-seo Oct 12, 2026
d17edd9
add invariant mass column in HFXICXI2PIFULLP table
hero-seo Oct 12, 2026
23311e8
Add generated Xic+ mass to the Gen tree
JaeYoonCHO Oct 12, 2026
fbab7a4
add generated Xic+ mass to the gen tree
hero-seo Oct 12, 2026
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4 changes: 3 additions & 1 deletion PWGHF/DataModel/CandidateReconstructionTables.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1500,6 +1500,7 @@ DECLARE_SOA_COLUMN(NSigTofPiFromLambda, nSigTofPiFromLambda, float);
DECLARE_SOA_COLUMN(NSigTofPrFromLambda, nSigTofPrFromLambda, float);
// MC
DECLARE_SOA_COLUMN(DecayLengthMcGen, decayLengthMcGen, float);
DECLARE_SOA_COLUMN(MassMcGen, massMcGen, float);
// Residuals and pulls
DECLARE_SOA_COLUMN(PtResidual, ptResidual, float);
DECLARE_SOA_COLUMN(PResidual, pResidual, float);
Expand Down Expand Up @@ -1605,7 +1606,8 @@ DECLARE_SOA_TABLE(HfCandXicMcGen, "AOD", "HFCANDXICMCGEN",
hf_cand_mc_flag::FlagMcMatchGen,
hf_cand_mc_flag::OriginMcGen,
hf_cand_mc_flag::PdgBhadMotherPart,
hf_cand_xic_to_xi_pi_pi::DecayLengthMcGen);
hf_cand_xic_to_xi_pi_pi::DecayLengthMcGen,
hf_cand_xic_to_xi_pi_pi::MassMcGen);

// table with residuals and pulls of PV
DECLARE_SOA_TABLE(HfCandXicResid, "AOD", "HFCANDXICRESID",
Expand Down
11 changes: 8 additions & 3 deletions PWGHF/TableProducer/candidateCreatorXicToXiPiPi.cxx
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Expand Up @@ -1093,6 +1093,7 @@ struct HfCandidateCreatorXicToXiPiPiExpressions {
registry.add("hDecayedPions", "hDecayedPions", {HistType::kTH1F, {{5, -0.5, 4.5}}});
registry.add("hInteractionsWithMaterial", "hInteractionsWithMaterial", {HistType::kTH1F, {{6, -0.5, 5.5}}});
registry.add("hDebugRec", "hDebugRec", {HistType::kTH1F, {{4, -0.5, 3.5}}});
registry.add("hy_pt_gen", "Generated MC", {HistType::kTH2F, {{20, -1.0, 1.0}, {200, 0, 20}}});
registry.get<TH1>(HIST("hDebugRec"))->GetXaxis()->SetBinLabel(1 + TotalRec, "total");
registry.get<TH1>(HIST("hDebugRec"))->GetXaxis()->SetBinLabel(1 + XicToFinalState, "#Xi^{+}_{c} #rightarrow #pi^{#plus} #pi^{#plus} #pi^{#minus} p #pi^{#minus}");
registry.get<TH1>(HIST("hDebugRec"))->GetXaxis()->SetBinLabel(1 + XiToPiPPi, "#Xi^{#minus} #rightarrow #pi^{#minus} p #pi^{#minus}");
Expand Down Expand Up @@ -1300,12 +1301,13 @@ struct HfCandidateCreatorXicToXiPiPiExpressions {
if (rejectionMask != 0) {
// at least one event selection not satisfied --> reject all particles from this collision
for (unsigned int i = 0; i < mcParticlesPerMcColl.size(); ++i) {
rowMcMatchGen(-99, -99, -99, decayLengthGen);
rowMcMatchGen(-99, -99, -99, decayLengthGen, -1.f);
}
continue;
}

for (const auto& particle : mcParticlesPerMcColl) {
const float massGen = RecoDecay::m(particle.pVector(), particle.e());
sign = 0;
flag = 0;
origin = RecoDecay::OriginType::None;
Expand Down Expand Up @@ -1345,6 +1347,9 @@ struct HfCandidateCreatorXicToXiPiPiExpressions {

// Check whether the charm baryon is non-prompt (from a b quark).
if (flag != 0) {
// fill inclusive generated Xic+
registry.fill(HIST("hy_pt_gen"), particle.y(), particle.pt());

origin = RecoDecay::getCharmHadronOrigin(mcParticles, particle, false, &idxBhadMothers);
// Calculate the decay length of the generated particle
auto dau0 = particle.template daughters_as<aod::McParticles>().begin();
Expand All @@ -1355,9 +1360,9 @@ struct HfCandidateCreatorXicToXiPiPiExpressions {
// Fill table
if (origin == RecoDecay::OriginType::NonPrompt) {
auto bHadMother = mcParticles.rawIteratorAt(idxBhadMothers[0]);
rowMcMatchGen(flag, origin, bHadMother.pdgCode(), decayLengthGen);
rowMcMatchGen(flag, origin, bHadMother.pdgCode(), decayLengthGen, massGen);
} else {
rowMcMatchGen(flag, origin, 0, decayLengthGen);
rowMcMatchGen(flag, origin, 0, decayLengthGen, massGen);
}
} // close loop over generated particles
} // close loop over McCollisions
Expand Down
3 changes: 3 additions & 0 deletions PWGHF/TableProducer/candidateSelectorXicToXiPiPi.cxx
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Expand Up @@ -245,6 +245,8 @@ struct HfCandidateSelectorXicToXiPiPi {
registry.add("hNCrossedRowsTpcBachelorPionRecBkg", "Reconstructed background;#it{N}_{rows}^{TPC} (#pi #leftarrow #Xi);entries", {HistType::kTH1F, {{103, 49.5, 152.5}}});
registry.add("hNCrossedRowsTpcV0PosDauRecBkg", "Reconstructed background;#it{N}_{rows}^{TPC} (V0 pos. dau.);entries", {HistType::kTH1F, {{103, 49.5, 152.5}}});
registry.add("hNCrossedRowsTpcV0NegDauRecBkg", "Reconstructed background;#it{N}_{rows}^{TPC} (V0 neg. dau.);entries", {HistType::kTH1F, {{103, 49.5, 152.5}}});
/// reconstructed MC
registry.add("hmass_pt_reco_truth", "Reconstructed truth matching MC;inv.mass(#Xi#pi#pi) [GeV/c^{2}];p_{T} [GeV/c]", {HistType::kTH2F, {{40, 2.3, 2.7}, {200, 0, 20}}});
}
}

Expand Down Expand Up @@ -641,6 +643,7 @@ struct HfCandidateSelectorXicToXiPiPi {
if constexpr (IsMc) {
if (isMatchedSignal) {
registry.fill(HIST("hSelCandidatesRecSig"), PidSelected);
registry.fill(HIST("hmass_pt_reco_truth"), hfCandXic.invMassXicPlus(), hfCandXic.pt());
} else {
registry.fill(HIST("hSelCandidatesRecBkg"), PidSelected);
}
Expand Down
4 changes: 4 additions & 0 deletions PWGHF/TableProducer/treeCreatorXicToXiPiPi.cxx
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Expand Up @@ -364,6 +364,7 @@ DECLARE_SOA_TABLE(HfCandXicToXiPiPiFullPs, "AOD", "HFXICXI2PIFULLP",
hf_cand_mc_flag::OriginMcGen,
hf_cand_mc_flag::PdgBhadMotherPart,
full::Pt,
full::M,
full::Eta,
full::Phi,
full::Y,
Expand Down Expand Up @@ -811,6 +812,7 @@ struct HfTreeCreatorXicToXiPiPi {
particle.originMcGen(),
particle.pdgBhadMotherPart(),
particle.pt(),
particle.massMcGen(),
particle.eta(),
particle.phi(),
RecoDecay::y(particle.pVector(), o2::constants::physics::MassXiCPlus),
Expand Down Expand Up @@ -865,6 +867,7 @@ struct HfTreeCreatorXicToXiPiPi {
particle.originMcGen(),
particle.pdgBhadMotherPart(),
particle.pt(),
particle.massMcGen(),
particle.eta(),
particle.phi(),
RecoDecay::y(particle.pVector(), o2::constants::physics::MassXiCPlus),
Expand Down Expand Up @@ -911,6 +914,7 @@ struct HfTreeCreatorXicToXiPiPi {
particle.originMcGen(),
particle.pdgBhadMotherPart(),
particle.pt(),
particle.massMcGen(),
particle.eta(),
particle.phi(),
RecoDecay::y(particle.pVector(), o2::constants::physics::MassXiCPlus),
Expand Down
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