Skip to content

[PWGCF] Added pT dependent DCA cuts #15176

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
otonvd merged 1 commit into from
Feb 26, 2026
Merged

[PWGCF] Added pT dependent DCA cuts #15176

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
37 changes: 37 additions & 0 deletions PWGCF/EbyEFluctuations/Tasks/MeanptFluctuations.cxx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,14 @@ struct MeanptFluctuationsAnalysis {
Configurable<bool> cfgEvSelUseGoodZvtxFT0vsPV{"cfgEvSelUseGoodZvtxFT0vsPV", true, "GoodZvertex and FT0 vs PV cut"};
Configurable<int> cfgCentralityEstimator{"cfgCentralityEstimator", 1, "Centrlaity estimatore choice: 1-->FT0C, 2-->FT0A; 3-->FT0M, 4-->FV0A"};

// pT dep DCAxy and DCAz cuts
Configurable<bool> cfgUsePtDepDCAxy{"cfgUsePtDepDCAxy", true, "Use pt-dependent DCAxy cut"};
Configurable<bool> cfgUsePtDepDCAz{"cfgUsePtDepDCAz", true, "Use pt-dependent DCAz cut"};
O2_DEFINE_CONFIGURABLE(cfgDCAxyFunc, std::string, "(0.0026+0.005/(x^1.01))", "Functional form of pt-dependent DCAxy cut");
O2_DEFINE_CONFIGURABLE(cfgDCAzFunc, std::string, "(0.0026+0.005/(x^1.01))", "Functional form of pt-dependent DCAz cut");
TF1* fPtDepDCAxy = nullptr;
TF1* fPtDepDCAz = nullptr;

O2_DEFINE_CONFIGURABLE(cfgEvSelMultCorrelation, bool, true, "Multiplicity correlation cut")
O2_DEFINE_CONFIGURABLE(cfgEvSelV0AT0ACut, bool, true, "V0A T0A 5 sigma cut")
struct : ConfigurableGroup {
Expand Down Expand Up @@ -183,6 +191,8 @@ struct MeanptFluctuationsAnalysis {
histos.add("hDcaZ", ";#it{dca}_{Z}", kTH1F, {{1000, -5, 5}});
histos.add("his2DdcaXYvsPt", "", {HistType::kTH2D, {ptAxis, {1000, -1, 1}}});
histos.add("his2DdcaZvsPt", "", {HistType::kTH2D, {ptAxis, {1000, -1, 1}}});
histos.add("his2DdcaXYvsPtPtBeforePtDepSel", "", {HistType::kTH2D, {ptAxis, {1000, -1, 1}}});
histos.add("his2DdcaZvsPtPtBeforePtDepSel", "", {HistType::kTH2D, {ptAxis, {1000, -1, 1}}});
histos.add("hMeanPt", "", kTProfile, {centAxis});
histos.add("Hist2D_globalTracks_PVTracks", "", {HistType::kTH2D, {nchAxis, nchAxis}});
histos.add("Hist2D_cent_nch", "", {HistType::kTH2D, {nchAxis, centAxis}});
Expand Down Expand Up @@ -300,6 +310,13 @@ struct MeanptFluctuationsAnalysis {
cfgFuncParas.fT0AV0ASigma->SetParameters(463.4144, 6.796509e-02, -9.097136e-07, 7.971088e-12, -2.600581e-17);
}

if (cfgUsePtDepDCAxy) {
fPtDepDCAxy = new TF1("ptDepDCAxy", Form("%s", cfgDCAxyFunc->c_str()), 0.001, 1000);
}
if (cfgUsePtDepDCAz) {
fPtDepDCAz = new TF1("ptDepDCAz", Form("%s", cfgDCAzFunc->c_str()), 0.001, 1000);
}

} //! end init function

template <typename TCollision>
Expand Down Expand Up @@ -649,6 +666,16 @@ struct MeanptFluctuationsAnalysis {
continue;
}

histos.fill(HIST("his2DdcaXYvsPtBeforePtDepSel"), track.pt(), track.dcaXY());
histos.fill(HIST("his2DdcaZvsPtPtBeforePtDepSel"), track.pt(), track.dcaZ());

if (cfgUsePtDepDCAxy && !(std::abs(track.dcaXY()) < fPtDepDCAxy->Eval(track.pt()))) {
continue;
}
if (cfgUsePtDepDCAz && !(std::abs(track.dcaZ()) < fPtDepDCAz->Eval(track.pt()))) {
continue;
}

if (particle.isPhysicalPrimary()) {
if ((particle.pt() > cfgCutPtLower) && (particle.pt() < cfgCutPreSelPt) && (std::abs(particle.eta()) < cfgCutPreSelEta)) {
histos.fill(HIST("hP"), track.p());
Expand Down Expand Up @@ -776,6 +803,16 @@ struct MeanptFluctuationsAnalysis {
continue;
}

histos.fill(HIST("his2DdcaXYvsPtBeforePtDepSel"), track.pt(), track.dcaXY());
histos.fill(HIST("his2DdcaZvsPtPtBeforePtDepSel"), track.pt(), track.dcaZ());

if (cfgUsePtDepDCAxy && !(std::abs(track.dcaXY()) < fPtDepDCAxy->Eval(track.pt()))) {
continue;
}
if (cfgUsePtDepDCAz && !(std::abs(track.dcaZ()) < fPtDepDCAz->Eval(track.pt()))) {
continue;
}

histos.fill(HIST("hP"), track.p());
histos.fill(HIST("hPt"), track.pt());
histos.fill(HIST("hEta"), track.eta());
Expand Down
Loading