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[PWGLF] Correction for pT extrapolation #16376

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Merged
abmodak merged 2 commits into from
May 26, 2026
+22 −3
Merged

[PWGLF] Correction for pT extrapolation #16376

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00b46de
Correction for pT extrapolation
lucasjsilva May 25, 2026
6ad63ec
Addition for debugging
lucasjsilva May 25, 2026
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25 changes: 22 additions & 3 deletions PWGLF/Tasks/GlobalEventProperties/studyPnch.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,7 @@ struct StudyPnch {
Configurable<float> maxPhi{"maxPhi", 6.283185f, "Maximum phi value for track selection"};
Configurable<bool> isPtincrease{"isPtincrease", false, "Varies low pT particles by a conservative amount of +100%"};
Configurable<bool> isPtdecrease{"isPtdecrease", false, "Varies low pT particles by a conservative amount of -50%"};
Configurable<bool> cPrint{"cPrint", false, "Enable printing information for debugging"};
Configurable<bool> isApplyStrangenessSysUncert{"isApplyStrangenessSysUncert", false, "Enable the evaluation of systematics due to strange particle contribution"};

void init(InitContext const&)
Expand Down Expand Up @@ -359,21 +360,32 @@ struct StudyPnch {
float countTracksPtCut(countTrk const& tracks, McColType const& McCol)
{
float nTrk = 0.0;
auto count = 0;
for (const auto& track : tracks) {
if (!isGenTrackSelected(track)) {
continue;
}
if (track.mcCollisionId() != McCol.mcCollisionId()) {
continue;
}
if (track.pt() > pTminCut)
if (track.pt() > pTminCut) {
count++;
continue;
}
if (isPtincrease) {
nTrk += 2 - 10 * track.pt();
nTrk += 2 - 10 * track.pt() - 1;
} else {
nTrk += 0.5 + 5 * track.pt();
nTrk += 0.5 + 5 * track.pt() - 1;
}
if (cPrint) {
LOG(info) << "nTrk: " << nTrk;
LOG(info) << "low pT = " << track.pt();
}
}
if (nTrk != 0 && cPrint) {
LOG(info) << "counts standard pT: " << count;
LOG(info) << "Result of the function: " << nTrk;
}
return nTrk;
}

Expand Down Expand Up @@ -429,10 +441,17 @@ struct StudyPnch {
auto multrec = countNTracksMcCol(recTracksPart, RecCol);
histos.fill(HIST("hMultiplicityMCrec"), multrec);
float multgen = countGenTracks(GenParticles, RecCol);
if (cPrint) {
LOG(info) << "Generated Particles with standard pT:" << multgen;
}
histos.fill(HIST("hMultiplicityMCgen"), multgen);
histos.fill(HIST("hResponseMatrix"), multrec, multgen);
float nTrkPtCut = countTracksPtCut(GenParticles, RecCol);
nTrkPtCut = multgen + nTrkPtCut;
if (cPrint) {
LOG(info) << "After Counting low pT: " << nTrkPtCut;
LOG(info) << "########################";
}
histos.fill(HIST("hMultiplicityMCgenPtCut"), nTrkPtCut);
histos.fill(HIST("hResponseMatrixPtCut"), multrec, nTrkPtCut);
if (isApplyStrangenessSysUncert) {
Expand Down
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