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[ALICE3] Update histograms in otf decayer QA task #16319

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Merged
jesgum merged 1 commit into from
May 20, 2026
+38 −28
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[ALICE3] Update histograms in otf decayer QA task #16319

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66 changes: 38 additions & 28 deletions ALICE3/Tasks/alice3DecayerQa.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
///
/// \file alice3DecayerQA.cxx
/// \file alice3DecayerQa.cxx
///
/// \brief QA task for otf decayer
///
Expand All @@ -36,7 +36,7 @@
using namespace o2;
using namespace o2::framework;

struct Alice3DecayerQA {
struct Alice3DecayerQa {
HistogramRegistry histos{"histos", {}, OutputObjHandlingPolicy::AnalysisObject};
SliceCache cache;

Expand Down Expand Up @@ -68,6 +68,9 @@ struct Alice3DecayerQA {
Partition<aod::McPartWithDaus> trueLambdas = aod::mcparticle::pdgCode == static_cast<int>(PDG_t::kLambda0);
Partition<aod::McPartWithDaus> trueXiMinus = aod::mcparticle::pdgCode == static_cast<int>(PDG_t::kXiMinus);

static constexpr size_t NCascadeDaughters = 2;
static constexpr size_t NV0Daughters = 2;

template <typename TParticle>
float radius(const TParticle& particle) const
{
Expand Down Expand Up @@ -106,20 +109,27 @@ struct Alice3DecayerQA {
histos.add("MCWithDau/hE", "hE", kTH1D, {axes.axisPt});

// QA with daughters from Decayer
histos.add("K0S/hGeneratedPt", "hGeneratedPt", kTH1D, {axes.axisPt});
histos.add("K0S/hHasDecayed", "hHasDecayed", kTH1D, {{2, -0.5, 1.5}});
histos.add("K0S/hPosDauDecayRadius", "hPosDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("K0S/hNegDauDecayRadius", "hNegDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("Lambda/hGeneratedPt", "hGeneratedPt", kTH1D, {axes.axisPt});
histos.add("Lambda/hHasDecayed", "hHasDecayed", kTH1D, {{2, -0.5, 1.5}});
histos.add("Lambda/hPosDauDecayRadius", "hPosDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("Lambda/hNegDauDecayRadius", "hNegDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hGeneratedPt", "hGeneratedPt", kTH1D, {axes.axisPt});
histos.add("XiMinus/hHasDecayed", "hHasDecayed", kTH1D, {{2, -0.5, 1.5}});
histos.add("XiMinus/hBachDauDecayRadius", "hBachDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hV0DauDecayRadius", "hV0DauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hPosDauDecayRadius", "hPosDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hNegDauDecayRadius", "hNegDauDecayRadius", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("K0S/hGeneratedPt", "hGeneratedPt;#it{p}_{T} (GeV/#it{c})", kTH1D, {axes.axisPt});
histos.add("K0S/hPosDauDecayRadius", "hPosDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("K0S/hNegDauDecayRadius", "hNegDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("Lambda/hGeneratedPt", "hGeneratedPt;#it{p}_{T} (GeV/#it{c})", kTH1D, {axes.axisPt});
histos.add("Lambda/hPosDauDecayRadius", "hPosDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("Lambda/hNegDauDecayRadius", "hNegDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hGeneratedPt", "hGeneratedPt;#it{p}_{T} (GeV/#it{c})", kTH1D, {axes.axisPt});
histos.add("XiMinus/hBachDauDecayRadius", "hBachDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hV0DauDecayRadius", "hV0DauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hPosDauDecayRadius", "hPosDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});
histos.add("XiMinus/hNegDauDecayRadius", "hNegDauDecayRadius;Decay radius 2D;#it{p}_{T} (GeV/#it{c})", kTH2D, {axes.axisRadiusLog, axes.axisPtLog});

auto hCheckHasK0SDecayed = histos.add<TH1>("K0S/hHasDecayed", "hHasDecayed", kTH1D, {{2, -0.5, 1.5}});
hCheckHasK0SDecayed->GetXaxis()->SetBinLabel(1, "No");
hCheckHasK0SDecayed->GetXaxis()->SetBinLabel(2, "Yes");
auto hCheckHasLambdaDecayed = histos.add<TH1>("Lambda/hHasDecayed", "hHasDecayed", kTH1D, {{2, -0.5, 1.5}});
hCheckHasLambdaDecayed->GetXaxis()->SetBinLabel(1, "No");
hCheckHasLambdaDecayed->GetXaxis()->SetBinLabel(2, "Yes");
auto hCheckHasXiMinusDecayed = histos.add<TH1>("XiMinus/hHasDecayed", "hHasDecayed", kTH1D, {{2, -0.5, 1.5}});
hCheckHasXiMinusDecayed->GetXaxis()->SetBinLabel(1, "No");
hCheckHasXiMinusDecayed->GetXaxis()->SetBinLabel(2, "Yes");
}

void process(const aod::McCollision& collision, const aod::McPartWithDaus& particles)
Expand Down Expand Up @@ -152,9 +162,9 @@ struct Alice3DecayerQA {
for (const auto& particle : trueK0ShortGrouped) {
histos.fill(HIST("K0S/hGeneratedPt"), particle.pt());
if (particle.has_daughters()) {
histos.fill(HIST("K0S/hHasDecayed"), 0);
histos.fill(HIST("K0S/hHasDecayed"), 1);
auto daughters = particle.daughtersIds();
if (daughters.size() == 2) {
if (daughters.size() == NV0Daughters) {
auto dau0 = particles.rawIteratorAt(daughters.front());
auto dau1 = particles.rawIteratorAt(daughters.back());

Expand All @@ -169,15 +179,15 @@ struct Alice3DecayerQA {
}
}
} else {
histos.fill(HIST("K0S/hHasDecayed"), 1);
histos.fill(HIST("K0S/hHasDecayed"), 0);
}
}
for (const auto& particle : trueLambdasGrouped) {
histos.fill(HIST("Lambda/hGeneratedPt"), particle.pt());
if (particle.has_daughters()) {
histos.fill(HIST("Lambda/hHasDecayed"), 0);
histos.fill(HIST("Lambda/hHasDecayed"), 1);
auto daughters = particle.daughtersIds();
if (daughters.size() == 2) {
if (daughters.size() == NV0Daughters) {
auto dau0 = particles.rawIteratorAt(daughters[0]);
auto dau1 = particles.rawIteratorAt(daughters[1]);

Expand All @@ -192,15 +202,15 @@ struct Alice3DecayerQA {
}
}
} else {
histos.fill(HIST("Lambda/hHasDecayed"), 1);
histos.fill(HIST("Lambda/hHasDecayed"), 0);
}
}
for (const auto& particle : trueXiMinusGrouped) {
histos.fill(HIST("XiMinus/hGeneratedPt"), particle.pt());
if (particle.has_daughters()) {
histos.fill(HIST("XiMinus/hHasDecayed"), 0);
histos.fill(HIST("XiMinus/hHasDecayed"), 1);
auto daughters = particle.daughtersIds();
if (daughters.size() == 2) {
if (daughters.size() == NCascadeDaughters) {
auto dau0 = particles.rawIteratorAt(daughters.front());
auto dau1 = particles.rawIteratorAt(daughters.back());

Expand All @@ -216,7 +226,7 @@ struct Alice3DecayerQA {
// Lambda -> p pi-
if (v0.has_daughters()) {
auto v0daughters = v0.daughtersIds();
if (v0daughters.size() == 2) {
if (v0daughters.size() == NV0Daughters) {
auto v0dau0 = particles.rawIteratorAt(v0daughters.front());
auto v0dau1 = particles.rawIteratorAt(v0daughters.back());
const bool lambdaDecay = (v0dau0.pdgCode() == PDG_t::kProton && v0dau1.pdgCode() == PDG_t::kPiMinus) ||
Expand All @@ -232,7 +242,7 @@ struct Alice3DecayerQA {
}
}
} else {
histos.fill(HIST("XiMinus/hHasDecayed"), 1);
histos.fill(HIST("XiMinus/hHasDecayed"), 0);
}
}

Expand Down Expand Up @@ -266,10 +276,10 @@ struct Alice3DecayerQA {
}
}

PROCESS_SWITCH(Alice3DecayerQA, process, "fill MC-with-dau histograms", true);
PROCESS_SWITCH(Alice3DecayerQa, process, "fill MC-with-dau histograms", true);
};

WorkflowSpec defineDataProcessing(ConfigContext const& ctx)
{
return WorkflowSpec{adaptAnalysisTask<Alice3DecayerQA>(ctx)};
return WorkflowSpec{adaptAnalysisTask<Alice3DecayerQa>(ctx)};
}
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