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[PWGHF/D2H] Investigation of D0ToPiKPi0 contribution in D* prompt fraction #13307

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Merged
fgrosa merged 6 commits into from
Oct 17, 2025
Merged

[PWGHF/D2H] Investigation of D0ToPiKPi0 contribution in D* prompt fraction #13307

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3032477
Adding THnSparse for D0toKPiPi0 contribution
deependra170598 Oct 7, 2025
5b167f6
Merge branch 'master' into D0toKPiPi0
deependra170598 Oct 8, 2025
5b3472b
clang-formating
deependra170598 Oct 9, 2025
e4ebde5
Adding prompt and non-prompt contribution from D0T0PiKPi0
deependra170598 Oct 9, 2025
6ddd33d
code optimisation attempt1
deependra170598 Oct 9, 2025
bc052e5
code optimisation attempt2
deependra170598 Oct 11, 2025
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55 changes: 55 additions & 0 deletions PWGHF/D2H/Tasks/taskDstarToD0Pi.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,7 @@ struct HfTaskDstarToD0Pi {
Configurable<bool> selectionFlagDstarToD0Pi{"selectionFlagDstarToD0Pi", true, "Selection Flag for D* decay to D0 & Pi"};
Configurable<bool> isCentStudy{"isCentStudy", true, "Flag to select centrality study"};
Configurable<bool> qaEnabled{"qaEnabled", true, "Flag to enable QA histograms"};
Configurable<bool> studyD0ToPiKPi0{"studyD0ToPiKPi0", false, "Flag to study D*->D0(piKpi0)pi channel"};

// CCDB configuration
Configurable<bool> useWeight{"useWeight", true, "Flag to use weights from CCDB"};
Expand Down Expand Up @@ -262,6 +263,28 @@ struct HfTaskDstarToD0Pi {
}
}

if (studyD0ToPiKPi0) {
// inclusive D0ToPiKPi0 study
if (doprocessMcWML && isCentStudy) {
registry.add("D0ToPiKPi0/hDeltaInvMassVsPtVsCentVsBDTScore", "#Delta #it{M}_{inv} Vs Pt Vs Cent Vs BDTScore for D0ToPiKPi0", {HistType::kTHnSparseF, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}, {axisCentrality}, {axisBDTScoreBackground}, {axisBDTScorePrompt}, {axisBDTScoreNonPrompt}}}, true);
} else if (doprocessMcWoMl && isCentStudy) {
registry.add("D0ToPiKPi0/hDeltaInvMassDstar3D", "#Delta #it{M}_{inv} D* Candidate for D0ToPiKPi0; inv. mass ((#pi #pi k) - (#pi k)) (GeV/#it{c}^{2});#it{p}_{T} (GeV/#it{c}); FT0M centrality", {HistType::kTH3F, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}, {axisCentrality}}}, true);
} else if (doprocessMcWML && !isCentStudy) {
registry.add("D0ToPiKPi0/hDeltaInvMassVsPtVsBDTScore", "#Delta #it{M}_{inv} Vs Pt Vs BDTScore for D0ToPiKPi0", {HistType::kTHnSparseF, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}, {axisBDTScoreBackground}, {axisBDTScorePrompt}, {axisBDTScoreNonPrompt}}}, true);
} else if (doprocessMcWoMl && !isCentStudy) {
registry.add("D0ToPiKPi0/hDeltaInvMassDstar2D", "#Delta #it{M}_{inv} D* Candidate for D0ToPiKPi0; inv. mass ((#pi #pi k) - (#pi k)) (GeV/#it{c}^{2});#it{p}_{T} (GeV/#it{c})", {HistType::kTH2F, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}}}, true);
}

// differential (prompt/Non-prompt) D0ToPiKPi0 study
if (doprocessMcWML) {
registry.add("D0ToPiKPi0/hPromptDeltaInvMassVsPtVsBDTScore", "Prompt #Delta #it{M}_{inv} Vs Pt Vs BDTScore for D0ToPiKPi0", {HistType::kTHnSparseF, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}, {axisBDTScoreBackground}, {axisBDTScorePrompt}, {axisBDTScoreNonPrompt}}}, true);
registry.add("D0ToPiKPi0/hNonPromptDeltaInvMassVsPtVsBDTScore", "Non-Prompt #Delta #it{M}_{inv} Vs Pt Vs BDTScore for D0ToPiKPi0", {HistType::kTHnSparseF, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}, {axisBDTScoreBackground}, {axisBDTScorePrompt}, {axisBDTScoreNonPrompt}}}, true);
} else if (doprocessMcWoMl) {
registry.add("D0ToPiKPi0/hPromptDeltaInvMassDstar2D", "Prompt #Delta #it{M}_{inv} D* Candidate for D0ToPiKPi0; inv. mass ((#pi #pi k) - (#pi k)) (GeV/#it{c}^{2});#it{p}_{T} (GeV/#it{c})", {HistType::kTH2F, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}}}, true);
registry.add("D0ToPiKPi0/hNonPromptDeltaInvMassDstar2D", "Non-Prompt #Delta #it{M}_{inv} D* Candidate for D0ToPiKPi0; inv. mass ((#pi #pi k) - (#pi k)) (GeV/#it{c}^{2});#it{p}_{T} (GeV/#it{c})", {HistType::kTH2F, {{axisDeltaInvMass}, {vecPtBins, "#it{p}_{T} (GeV/#it{c})"}}}, true);
}
}

// if weights to be applied
if (useWeight) {
ccdbApi.init(ccdbUrl);
Expand Down Expand Up @@ -542,6 +565,38 @@ struct HfTaskDstarToD0Pi {
}
}
}
} else if (studyD0ToPiKPi0 && candDstarMcRec.isSelDstarToD0Pi() && (std::abs(candDstarMcRec.flagMcMatchRec()) == hf_decay::hf_cand_dstar::DecayChannelMain::DstarToPiKPiPi0) && (std::abs(candDstarMcRec.flagMcMatchRecD0()) == hf_decay::hf_cand_2prong::DecayChannelMain::D0ToPiKPi0)) {
// Aplly all selection to study D*->D0(piKpi0)pi channel same as signal channel
// MC Matched but to D*->D0(piKpi0)pi channel
auto deltaMDstar = std::abs(candDstarMcRec.invMassDstar() - candDstarMcRec.invMassD0());
if constexpr (ApplyMl) {
auto bdtScore = candDstarMcRec.mlProbDstarToD0Pi();
// inclusive study
if (isCentStudy) {
registry.fill(HIST("D0ToPiKPi0/hDeltaInvMassVsPtVsCentVsBDTScore"), deltaMDstar, candDstarMcRec.pt(), centrality, bdtScore[0], bdtScore[1], bdtScore[2]);
} else {
registry.fill(HIST("D0ToPiKPi0/hDeltaInvMassVsPtVsBDTScore"), deltaMDstar, candDstarMcRec.pt(), bdtScore[0], bdtScore[1], bdtScore[2]);
}
// differential (prompt/Non-prompt) study
if (candDstarMcRec.originMcRec() == RecoDecay::OriginType::Prompt) {
registry.fill(HIST("D0ToPiKPi0/hPromptDeltaInvMassVsPtVsBDTScore"), deltaMDstar, candDstarMcRec.pt(), bdtScore[0], bdtScore[1], bdtScore[2]);
} else if (candDstarMcRec.originMcRec() == RecoDecay::OriginType::NonPrompt) {
registry.fill(HIST("D0ToPiKPi0/hNonPromptDeltaInvMassVsPtVsBDTScore"), deltaMDstar, candDstarMcRec.pt(), bdtScore[0], bdtScore[1], bdtScore[2]);
}
} else { // without ML
// inclusive study
if (isCentStudy) {
registry.fill(HIST("D0ToPiKPi0/hDeltaInvMassDstar3D"), deltaMDstar, candDstarMcRec.pt(), centrality);
} else {
registry.fill(HIST("D0ToPiKPi0/hDeltaInvMassDstar2D"), deltaMDstar, candDstarMcRec.pt());
}
// differential (prompt/Non-prompt) study
if (candDstarMcRec.originMcRec() == RecoDecay::OriginType::Prompt) {
registry.fill(HIST("D0ToPiKPi0/hPromptDeltaInvMassDstar2D"), deltaMDstar, candDstarMcRec.pt());
} else if (candDstarMcRec.originMcRec() == RecoDecay::OriginType::NonPrompt) {
registry.fill(HIST("D0ToPiKPi0/hNonPromptDeltaInvMassDstar2D"), deltaMDstar, candDstarMcRec.pt());
}
}
} else { // MC Unmatched (Baground at Reconstruction Level)
if (qaEnabled) {
registry.fill(HIST("QA/hCPASkimD0RecBg"), candDstarMcRec.cpaD0());
Expand Down
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