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[PWGLF,Trigger] Fix bug in cascade building via strangeness helper #10904

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Merged
ChiaraDeMartin95 merged 6 commits into from
Apr 18, 2025
Merged

[PWGLF,Trigger] Fix bug in cascade building via strangeness helper #10904

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eba1c05
add abs for DCAtoPV
Apr 17, 2025
0e5b719
setting magnetic field in the strangeness helper
Apr 17, 2025
2637256
fill missing bins in histo QA
Apr 17, 2025
a650642
small histo fix
Apr 17, 2025
5c8df48
Please consider the following formatting changes
alibuild Apr 17, 2025
39f768d
Merge pull request #23 from alibuild/alibot-cleanup-10904
ChiaraDeMartin95 Apr 17, 2025
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40 changes: 34 additions & 6 deletions EventFiltering/PWGLF/strangenessFilter.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -225,7 +225,7 @@ struct strangenessFilter {
hProcessedEvents->GetXaxis()->SetBinLabel(16, aod::filtering::OmegaXi::columnLabel());

hCandidate->GetXaxis()->SetBinLabel(1, "All");
hCandidate->GetXaxis()->SetBinLabel(2, "Has_V0");
hCandidate->GetXaxis()->SetBinLabel(2, "PassBuilderSel");
hCandidate->GetXaxis()->SetBinLabel(3, "DCA_meson");
hCandidate->GetXaxis()->SetBinLabel(4, "DCA_baryon");
hCandidate->GetXaxis()->SetBinLabel(5, "TPCNsigma_pion");
Expand All @@ -243,6 +243,7 @@ struct strangenessFilter {
hCandidate->GetXaxis()->SetBinLabel(17, "CascCosPA");
hCandidate->GetXaxis()->SetBinLabel(18, "DCAV0ToPV");
hCandidate->GetXaxis()->SetBinLabel(19, "ProperLifeTime");
hCandidate->GetXaxis()->SetBinLabel(20, "Rapidity");

std::vector<double> centBinning = {0., 1., 5., 10., 20., 30., 40., 50., 70., 100.};
AxisSpec multAxisNTPV = {100, 0.0f, 100.0f, "N. tracks PV estimator"};
Expand Down Expand Up @@ -419,6 +420,7 @@ struct strangenessFilter {
mDCAFitter.setMinParamChange(minParamChange);
mDCAFitter.setMinRelChi2Change(minRelChi2Change);
mDCAFitter.setUseAbsDCA(useAbsDCA);
mStraHelper.fitter.setBz(mBz);
}
if (!mStraHelper.lut) { /// done only once
ccdb->setURL(ccdbUrl);
Expand Down Expand Up @@ -667,13 +669,18 @@ struct strangenessFilter {
}
hCandidate->Fill(5.5);
}
hCandidate->Fill(7.5);
hCandidate->Fill(6.5); // OLD: eta dau (selection now applied in strangeness helper)
hCandidate->Fill(7.5); // OLD: bachtopv (selection now applied in strangeness helper)

// not striclty needed as selection are applied beforehand - just as QA (no change in number expected)
if (Cascv0radius < v0radius) {
continue;
}
hCandidate->Fill(8.5);
if (Casccascradius < cascradius) {
continue;
}
hCandidate->Fill(9.5);
if (v0DauCPA < v0cospa) {
continue;
}
Expand All @@ -682,7 +689,14 @@ struct strangenessFilter {
continue;
}
hCandidate->Fill(11.5);

if (mStraHelper.cascade.cascadeDaughterDCA > dcacascdau) {
continue;
}
hCandidate->Fill(12.5);
if (std::fabs(LambdaMass - constants::physics::MassLambda) > masslambdalimit) {
continue;
}
hCandidate->Fill(13.5);
if (std::fabs(etaCasc) > eta) {
continue;
}
Expand All @@ -695,6 +709,20 @@ struct strangenessFilter {
}
hCandidate->Fill(15.5);

// Fill selections QA for Xi
if (cascCPA > casccospaxi) {
hCandidate->Fill(16.5);
if (cascCPA > dcav0topv) {
hCandidate->Fill(17.5);
if (xiproperlifetime < properlifetimefactor * ctauxi) {
hCandidate->Fill(18.5);
if (std::fabs(yXi) < rapidity) {
hCandidate->Fill(19.5);
}
}
}
}

const auto deltaMassXi = useSigmaBasedMassCutXi ? getMassWindow(stfilter::species::Xi, ptCasc) : ximasswindow;
const auto deltaMassOmega = useSigmaBasedMassCutOmega ? getMassWindow(stfilter::species::Omega, ptCasc) : omegamasswindow;

Expand Down Expand Up @@ -740,9 +768,9 @@ struct strangenessFilter {
QAHistosTopologicalVariables.fill(HIST("hDCAV0ToPVXi"), DCAV0ToPV);
QAHistosTopologicalVariables.fill(HIST("hDCAV0DaughtersXi"), mStraHelper.cascade.v0DaughterDCA);
QAHistosTopologicalVariables.fill(HIST("hDCACascDaughtersXi"), mStraHelper.cascade.cascadeDaughterDCA);
QAHistosTopologicalVariables.fill(HIST("hDCABachToPVXi"), mStraHelper.cascade.bachelorDCAxy);
QAHistosTopologicalVariables.fill(HIST("hDCAPosToPVXi"), mStraHelper.cascade.positiveDCAxy);
QAHistosTopologicalVariables.fill(HIST("hDCANegToPVXi"), mStraHelper.cascade.negativeDCAxy);
QAHistosTopologicalVariables.fill(HIST("hDCABachToPVXi"), std::fabs(mStraHelper.cascade.bachelorDCAxy));
QAHistosTopologicalVariables.fill(HIST("hDCAPosToPVXi"), std::fabs(mStraHelper.cascade.positiveDCAxy));
QAHistosTopologicalVariables.fill(HIST("hDCANegToPVXi"), std::fabs(mStraHelper.cascade.negativeDCAxy));
QAHistosTopologicalVariables.fill(HIST("hInvMassLambdaXi"), LambdaMass);

if (doextraQA) {
Expand Down
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