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[PWGHF] Add the number of tracks into the charm-bulk thnsparse in taskPtFlucCharmHadrons.cxx #16434

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Merged
stefanopolitano merged 2 commits into from
May 28, 2026
+9 −7
Merged

[PWGHF] Add the number of tracks into the charm-bulk thnsparse in taskPtFlucCharmHadrons.cxx #16434

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81931a2
Add the number of tracks into the charm-bulk correlation
wuctlby May 28, 2026
69c5113
Using the intermediate variable for N tracks
wuctlby May 28, 2026
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16 changes: 9 additions & 7 deletions PWGHF/D2H/Tasks/taskPtFlucCharmHadrons.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -186,7 +186,7 @@ struct HfTaskPtFlucCharmHadrons {

// charm-bulk correlations (optional)
if (saveCharmBulkCorrelations) {
registry.add("hCharmBulkCorrelations", "Charm-bulk correlations", HistType::kTHnSparseF, {aInvMass, aCent, aPt, aSign, aMlOne, aMlTwo, aCandEta, aMPtTrkA, aMPtTrkB, aPtCandProduct}, true);
registry.add("hCharmBulkCorrelations", "Charm-bulk correlations", HistType::kTHnSparseF, {aInvMass, aCent, aPt, aSign, aMlOne, aMlTwo, aCandEta, aMPtTrkA, aMPtTrkB, aPtCandProduct, aNTrkA, aNTrkB}, true);
registry.add("hMeanPtTrkAllColls", "Mean pT of charged hadrons for all collisions", HistType::kTHnSparseF, {aCent, aMPtTrkA, aMPtTrkB, aPtTrkProduct, aNTrkA, aNTrkB}, true);
}

Expand Down Expand Up @@ -250,7 +250,7 @@ struct HfTaskPtFlucCharmHadrons {

/// remove candidate daughters from the mean pT of tracks in A and B (if they are in the respective subevent)
template <DecayChannel Channel, typename CandT>
float removeDaughtersFromMeanPt(const CandT& cand, float rawMeanPt, int n, const std::vector<int>& trkIDs)
std::pair<float, int> removeDaughtersFromMeanPt(const CandT& cand, float rawMeanPt, int n, const std::vector<int>& trkIDs)
{
int removedCount = 0;
float removedSumPt = 0.f;
Expand All @@ -270,9 +270,9 @@ struct HfTaskPtFlucCharmHadrons {
}
if (removedCount > 0) {
double totalSum = static_cast<double>(rawMeanPt) * n;
return static_cast<float>((totalSum - removedSumPt) / (n - removedCount));
return {static_cast<float>((totalSum - removedSumPt) / (n - removedCount)), n - removedCount};
}
return rawMeanPt;
return {rawMeanPt, n};
}

// ---------------------------------------------------------------------------
Expand Down Expand Up @@ -420,12 +420,14 @@ struct HfTaskPtFlucCharmHadrons {
float candPtProduct{0.f};
float meanPtA{0.f};
float meanPtB{0.f};
int nATrk{nA};
int nBTrk{nB};
if (eta > etaAMin.value && eta < etaAMax.value) {
meanPtB = removeDaughtersFromMeanPt<Channel, decltype(cand)>(cand, RawMeanPtB, nB, trkIDB);
std::tie(meanPtB, nBTrk) = removeDaughtersFromMeanPt<Channel, decltype(cand)>(cand, RawMeanPtB, nB, trkIDB);
meanPtA = RawMeanPtA; // no need to remove daughters from A if candidate is in A
candPtProduct = pt * meanPtB;
} else if (eta > etaBMin.value && eta < etaBMax.value) {
meanPtA = removeDaughtersFromMeanPt<Channel, decltype(cand)>(cand, RawMeanPtA, nA, trkIDA);
std::tie(meanPtA, nATrk) = removeDaughtersFromMeanPt<Channel, decltype(cand)>(cand, RawMeanPtA, nA, trkIDA);
meanPtB = RawMeanPtB; // no need to remove daughters from B if candidate is in B
candPtProduct = pt * meanPtA;
}
Expand All @@ -434,7 +436,7 @@ struct HfTaskPtFlucCharmHadrons {
auto [invMass, sign] = getCandMassAndSign<Channel, decltype(cand), T1, Trk>(cand);

// fill charm-bulk correlation thnsparse
registry.fill(HIST("hCharmBulkCorrelations"), invMass, cent, pt, sign, ml1, ml2, eta, meanPtA, meanPtB, candPtProduct);
registry.fill(HIST("hCharmBulkCorrelations"), invMass, cent, pt, sign, ml1, ml2, eta, meanPtA, meanPtB, candPtProduct, nATrk, nBTrk);
}
} else {
int nDcandTotA = 0;
Expand Down
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