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[PWGLF] Added necessary histograms for Lambda feeddown + substituted boilerplate code with macros #18061

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Merged
romainschotter merged 6 commits into from
Sep 25, 2026
+252 −241
Merged

[PWGLF] Added necessary histograms for Lambda feeddown + substituted boilerplate code with macros #18061

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2df512b
Substituted boilerplate code with macros
scannito Sep 24, 2026
b7d4eab
More boilerplate code removed
scannito Sep 24, 2026
aaf15ff
More macros for boilerplatecode
scannito Sep 25, 2026
4235e15
Renamed min pt configs in McGen
scannito Sep 25, 2026
1a1ebc4
Added necessary histograms for lambda feeddown
scannito Sep 25, 2026
49ae7a0
Fix pdg code
scannito Sep 25, 2026
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32 changes: 31 additions & 1 deletion PWGLF/TableProducer/Strangeness/phiStrangeCorrelator.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -468,6 +468,8 @@ struct V0ReducedCandProducer {
} lambdaConfigs;
} v0Configs;

Configurable<std::vector<double>> binspTXi{"binspTXi", {0.8, 1.2, 1.6, 2.0, 2.5, 3.0, 4.0, 6.0}, "pT bin limits for Xi"};

// Constants
static constexpr double MassK0S = o2::constants::physics::MassK0Short;
static constexpr double MassLambda = o2::constants::physics::MassLambda0;
Expand Down Expand Up @@ -500,12 +502,16 @@ struct V0ReducedCandProducer {
AxisSpec binnedmultAxis{(std::vector<double>)binsMult, "centFT0M"};
AxisSpec binnedpTK0SAxis{(std::vector<double>)v0Configs.k0sConfigs.binspTK0S, "#it{p}_{T} (GeV/#it{c})"};
AxisSpec binnedpTLambdaAxis{(std::vector<double>)v0Configs.lambdaConfigs.binspTLambda, "#it{p}_{T} (GeV/#it{c})"};
AxisSpec binnedpTXiAxis{(std::vector<double>)binspTXi, "#it{p}_{T} (GeV/#it{c})"};
AxisSpec massK0SAxis = {200, 0.45f, 0.55f, "#it{M}_{inv} [GeV/#it{c}^{2}]"};
AxisSpec massLambdaAxis = {200, 1.08f, 1.15f, "#it{M}_{inv} [GeV/#it{c}^{2}]"};

histos.add("h3K0sCandidatesMass", "K^{0}_{S} candidate invariant mass", kTH3F, {binnedmultAxis, binnedpTK0SAxis, massK0SAxis});
histos.add("h3LambdaCandidatesMass", "#Lambda candidate invariant mass", kTH3F, {binnedmultAxis, binnedpTLambdaAxis, massLambdaAxis});
histos.add("h3AntiLambdaCandidatesMass", "#bar{#Lambda} candidate invariant mass", kTH3F, {binnedmultAxis, binnedpTLambdaAxis, massLambdaAxis});

histos.add("h2LambdaFromXi", "#Lambda from #Xi", kTH2F, {binnedpTLambdaAxis, binnedpTXiAxis});
histos.add("h2AntiLambdaFromXi", "#bar{#Lambda} from #Xi", kTH2F, {binnedpTLambdaAxis, binnedpTXiAxis});
}

template <V0Type v0Type>
Expand Down Expand Up @@ -641,7 +647,31 @@ struct V0ReducedCandProducer {

const auto& mcParticles = mcParticlesOpt->get();
const auto& v0McParticle = mcParticles.rawIteratorAt(v0.mcParticleId());
if (v0McParticle.pdgCode() != getPdgCode<v0Type>() || !v0McParticle.isPhysicalPrimary()) {
// if (v0McParticle.pdgCode() != getPdgCode<v0Type>() || !v0McParticle.isPhysicalPrimary()) {
// return;
//}
if (v0McParticle.pdgCode() != getPdgCode<v0Type>()) {
return;
}

if constexpr ((v0Type == kLambda || v0Type == kAntiLambda)) {
if (v0.has_mcMotherParticle()) {
auto v0McMotherParticle = mcParticles.rawIteratorAt(v0.mcMotherParticleId());
if (std::abs(v0McMotherParticle.y()) <= v0Configs.yAcceptance) {
if constexpr (v0Type == kLambda) {
if (v0McMotherParticle.pdgCode() == PDG_t::kXiMinus || v0McMotherParticle.pdgCode() == o2::constants::physics::Pdg::kXi0) {
histos.fill(HIST("h2LambdaFromXi"), v0McParticle.pt(), v0McMotherParticle.pt());
}
} else if constexpr (v0Type == kAntiLambda) {
if (v0McMotherParticle.pdgCode() == PDG_t::kXiPlusBar || v0McMotherParticle.pdgCode() == -o2::constants::physics::Pdg::kXi0) {
histos.fill(HIST("h2AntiLambdaFromXi"), v0McParticle.pt(), v0McMotherParticle.pt());
}
}
}
}
}

if (!v0McParticle.isPhysicalPrimary()) {
return;
}

Expand Down
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