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[PWGHF] Split UPC Lc eta-vs-multiplicity QA by gap A/C in Lc UPC task #16610

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Merged
zhangbiao-phy merged 3 commits into from
Jun 10, 2026
+8 −2
Merged

[PWGHF] Split UPC Lc eta-vs-multiplicity QA by gap A/C in Lc UPC task #16610

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17b63c0
Optimize CPU usage in UPC Lc task
Rrantu Jun 3, 2026
3c5a080
Merge branch 'AliceO2Group:master' into Lc
Rrantu Jun 10, 2026
e02528a
Add histograms for Eta vs Multiplicity of Gap A and C
Rrantu Jun 10, 2026
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10 changes: 8 additions & 2 deletions PWGHF/D2H/Tasks/taskUpcLc.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -161,7 +161,8 @@ struct HfTaskUpcLc {
registry.add("Data/hUpcGapAfterSelection", "UPC gap type after selection;Gap side;Counts", {HistType::kTH1F, {{7, -1.5, 5.5}}});
registry.add("Data/hUpcMulti", "Multiplicity of UPC events;Multiplicity;Counts", {HistType::kTH1F, {{200, -0.5, 199.5}}});
registry.add("Data/hUpcVtz", "Vertex Z position of UPC events;Vz (cm);Counts", {HistType::kTH1F, {{200, -10., 10.}}});
registry.add("Data/eta_vs_Multi", "Eta vs Multiplicity;Eta;Multiplicity", {HistType::kTH2F, {{20, -1., 1.}, {200, -0.5, 199.5}}});
registry.add("Data/eta_vs_Multi_A", "Eta vs Multiplicity of Gap A Events;Eta;Multiplicity", {HistType::kTH2F, {{20, -1., 1.}, {200, -0.5, 199.5}}});
registry.add("Data/eta_vs_Multi_C", "Eta vs Multiplicity of Gap C Events;Eta;Multiplicity", {HistType::kTH2F, {{20, -1., 1.}, {200, -0.5, 199.5}}});
hfEvSel.addHistograms(registry);
ccdb->setURL(ccdbUrl);
ccdb->setCaching(true);
Expand Down Expand Up @@ -279,7 +280,12 @@ struct HfTaskUpcLc {
const auto eta = candidate.eta();

double outputBkg(-1);
registry.fill(HIST("Data/eta_vs_Multi"), eta, multNTracksPV);
if (gapA0nXn) {
registry.fill(HIST("Data/eta_vs_Multi_A"), eta, multNTracksPV);
}
if (gapCXn0n) {
registry.fill(HIST("Data/eta_vs_Multi_C"), eta, multNTracksPV);
}

auto fillTHnData = [&](bool isPKPi) {
const auto massLc = isPKPi ? HfHelper::invMassLcToPKPi(candidate) : HfHelper::invMassLcToPiKP(candidate);
Expand Down
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