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[PWGHF] fix event mixing binning setup in D0-h correlator #15595

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Merged
singhra1994 merged 1 commit into from
Apr 1, 2026
+5 −3
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[PWGHF] fix event mixing binning setup in D0-h correlator #15595

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8 changes: 5 additions & 3 deletions PWGHF/HFC/TableProducer/correlatorD0Hadrons.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,7 @@ struct HfCorrelatorD0Hadrons {
Preslice<aod::McParticles> perTrueCollision = o2::aod::mcparticle::mcCollisionId;

ConfigurableAxis zPoolBins{"zPoolBins", {VARIABLE_WIDTH, -10.0f, -2.5f, 2.5f, 10.0f}, "z vertex position pools"};
ConfigurableAxis multPoolBins{"multPoolBins", {VARIABLE_WIDTH, 0.0f, 2000.0f, 6000.0f, 10000.0f}, "event multiplicity pools (FT0M)"};
ConfigurableAxis multPoolBins{"multPoolBins", {VARIABLE_WIDTH, 0.0f, 1100.0f, 1900.0f, 10000.0f}, "event multiplicity pools (FT0M)"};
ConfigurableAxis multPoolBinsMcGen{"multPoolBinsMcGen", {VARIABLE_WIDTH, 0.0f, 20.0f, 50.0f, 500.0f}, "Mixing bins - MC multiplicity"}; // In MCGen multiplicity is defined by counting tracks
ConfigurableAxis binsMassD{"binsMassD", {200, 1.3848, 2.3848}, "inv. mass (#pi K) (GeV/#it{c}^{2});entries"};
ConfigurableAxis binsEta{"binsEta", {100, -5., 5.}, "#it{#eta}"};
Expand All @@ -265,8 +265,6 @@ struct HfCorrelatorD0Hadrons {
ConfigurableAxis binsPoolBin{"binsPoolBin", {9, 0., 9.}, "PoolBin"};
ConfigurableAxis binsCentFt0m{"binsCentFt0m", {100, 0., 100.}, "Centrality percentile (FT0M)"};

BinningType corrBinning{{zPoolBins, multPoolBins}, true};

HistogramRegistry registry{"registry", {}, OutputObjHandlingPolicy::AnalysisObject};

void init(InitContext&)
Expand Down Expand Up @@ -363,6 +361,7 @@ struct HfCorrelatorD0Hadrons {
SelectedTracks const& tracks,
SelectedCandidatesDataMl const& candidates)
{
BinningType const corrBinning{{zPoolBins, multPoolBins}, true};
// find leading particle
if (correlateD0WithLeadingParticle) {
leadingIndex = findLeadingParticle(tracks, etaTrackMax.value);
Expand Down Expand Up @@ -529,6 +528,7 @@ struct HfCorrelatorD0Hadrons {
SelectedCandidatesMcRecMl const& candidates,
aod::McParticles const& mcParticles)
{
BinningType const corrBinning{{zPoolBins, multPoolBins}, true};
// find leading particle
if (correlateD0WithLeadingParticle) {
leadingIndex = findLeadingParticle(tracks, etaTrackMax.value);
Expand Down Expand Up @@ -864,6 +864,7 @@ struct HfCorrelatorD0Hadrons {
SelectedCandidatesDataMl const& candidates,
SelectedTracks const& tracks)
{
BinningType const corrBinning{{zPoolBins, multPoolBins}, true};
for (const auto& collision : collisions) {
registry.fill(HIST("hMultFT0M"), collision.multFT0M());
registry.fill(HIST("hZvtx"), collision.posZ());
Expand Down Expand Up @@ -952,6 +953,7 @@ struct HfCorrelatorD0Hadrons {
SelectedTracksMcRec const& tracks,
aod::McParticles const& mcParticles)
{
BinningType const corrBinning{{zPoolBins, multPoolBins}, true};
auto tracksTuple = std::make_tuple(candidates, tracks);
Pair<SelectedCollisions, SelectedCandidatesMcRecMl, SelectedTracksMcRec, BinningType> const pairMcRec{corrBinning, numberEventsMixed, -1, collisions, tracksTuple, &cache};
bool isD0Prompt = false;
Expand Down
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