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[PWGDQ] Added additional D0 topology cuts and variables #18369

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[PWGDQ] Added additional D0 topology cuts and variables #18369

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e7809d1
Added additional D0 topology cuts and variables
axti98 Oct 20, 2026
2522c1c
Updated ALICE 3 concerned cuts for D0
axti98 Oct 26, 2026
fe6881e
Added RICH rejection
axti98 Oct 26, 2026
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222 changes: 214 additions & 8 deletions PWGDQ/Core/CutsLibrary.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -3702,6 +3702,16 @@ AnalysisCompositeCut* o2::aod::dqcuts::GetCompositeCut(const char* cutName)
return cut;
}

if (nameStr == "pairD0Topology") {
cut->AddCut(GetAnalysisCut("pairD0Topology"));
return cut;
}

if (nameStr == "pairD0TopologyTight") {
cut->AddCut(GetAnalysisCut("pairD0TopologyTight"));
return cut;
}

if (nameStr == "pairD0HighPt1") {
cut->AddCut(GetAnalysisCut("pairLxyzProjected3sigma"));
cut->AddCut(GetAnalysisCut("pairPtLow5"));
Expand Down Expand Up @@ -3923,6 +3933,36 @@ AnalysisCompositeCut* o2::aod::dqcuts::GetCompositeCut(const char* cutName)
return cut;
}

if (nameStr == "alice3StandardTrackD0") {
cut->AddCut(GetAnalysisCut("alice3StandardKineD0"));
cut->AddCut(GetAnalysisCut("alice3TrackQuality"));
return cut;
}

if (nameStr == "alice3TOFEtaD0") {
cut->AddCut(GetAnalysisCut("alice3TOFEta"));
cut->AddCut(GetAnalysisCut("alice3TrackQuality"));
return cut;
}

if (nameStr == "alice3RICHEtaD0") {
cut->AddCut(GetAnalysisCut("alice3RICHEta"));
cut->AddCut(GetAnalysisCut("alice3TrackQuality"));
return cut;
}

if (nameStr == "alice3StandardTrackTOFAcceptanceD0") {
cut->AddCut(GetAnalysisCut("alice3KineTOFAcceptanceD0"));
cut->AddCut(GetAnalysisCut("alice3TrackQuality"));
return cut;
}

if (nameStr == "alice3StandardTrackRICHAcceptanceD0") {
cut->AddCut(GetAnalysisCut("alice3KineRICHAcceptanceD0"));
cut->AddCut(GetAnalysisCut("alice3TrackQuality"));
return cut;
}

if (nameStr == "alice3TightDCATrack") {
cut->AddCut(GetAnalysisCut("alice3StandardKine"));
cut->AddCut(GetAnalysisCut("alice3TrackQualityTightDCA"));
Expand Down Expand Up @@ -4005,6 +4045,32 @@ AnalysisCompositeCut* o2::aod::dqcuts::GetCompositeCut(const char* cutName)
return cut;
}

if (nameStr == "alice3EitherTOFPIDPi") {
auto* pidCut = new AnalysisCompositeCut(
"alice3EitherTOFPIDPi",
"iTOF OR oTOF pion PID",
kFALSE);

pidCut->AddCut(GetAnalysisCut("alice3iTOFPIDPi"));
pidCut->AddCut(GetAnalysisCut("alice3oTOFPIDPi"));

delete cut;
return pidCut;
}

if (nameStr == "alice3EitherTOFPIDKa") {
auto* pidCut = new AnalysisCompositeCut(
"alice3EitherTOFPIDKa",
"iTOF OR oTOF kaon PID",
kFALSE);

pidCut->AddCut(GetAnalysisCut("alice3iTOFPIDKa"));
pidCut->AddCut(GetAnalysisCut("alice3oTOFPIDKa"));

delete cut;
return pidCut;
}

if (nameStr == "alice3RICHPIDEl") {
cut->AddCut(GetAnalysisCut("alice3RICHPIDEl"));
return cut;
Expand Down Expand Up @@ -4108,6 +4174,32 @@ AnalysisCompositeCut* o2::aod::dqcuts::GetCompositeCut(const char* cutName)
return cut;
}

if (nameStr == "alice3TOFPIDPi") {
cut->AddCut(GetAnalysisCut("alice3iTOFPIDPi"));
cut->AddCut(GetAnalysisCut("alice3oTOFPIDPi"));
return cut;
}

if (nameStr == "alice3TOFPIDKaRej") {
cut->AddCut(GetAnalysisCut("alice3D0KaonTOFPID"));
return cut;
}

if (nameStr == "alice3TOFPIDPiRej") {
cut->AddCut(GetAnalysisCut("alice3D0PionTOFPID"));
return cut;
}

if (nameStr == "alice3RICHTOFPIDPiRej") {
cut->AddCut(GetAnalysisCut("alice3D0PionRICHTOFPID"));
return cut;
}

if (nameStr == "alice3RICHTOFPIDKaRej") {
cut->AddCut(GetAnalysisCut("alice3D0KaonRICHTOFPID"));
return cut;
}

delete cut;
LOGF(fatal, Form("Did not find cut %s. Returning nullptr", cutName));
return nullptr;
Expand Down Expand Up @@ -7083,6 +7175,35 @@ AnalysisCut* o2::aod::dqcuts::GetAnalysisCut(const char* cutName)
return cut;
}

if (nameStr == "pairD0Topology") {
cut->AddCut(VarManager::kCosPointingAngle, 0.9, 1.0);
cut->AddCut(VarManager::kD0DcaDaughters, 0.0, 0.03);
cut->AddCut(VarManager::kD0ImpParProduct, -1000.0, 0.0);
cut->AddCut(VarManager::kDCAxy1, -0.1, 0.1);
cut->AddCut(VarManager::kDCAxy2, -0.1, 0.1);
return cut;
}

if (nameStr == "pairD0TopologyTight") {
cut->AddCut(VarManager::kCosPointingAngle, 0.8, 1.0, false, VarManager::kPt, 0.0, 1.0);
cut->AddCut(VarManager::kCosPointingAngle, 0.9, 1.0, false, VarManager::kPt, 1.0, 4.0);
cut->AddCut(VarManager::kCosPointingAngle, 0.85, 1.0, false, VarManager::kPt, 4.0, 50.0);
cut->AddCut(VarManager::kD0DcaDaughters, 0.035, 1000.0, false, VarManager::kPt, 0.0, 1.0);
cut->AddCut(VarManager::kD0DcaDaughters, 0.0, 0.03, false, VarManager::kPt, 1.0, 50.0);
cut->AddCut(VarManager::kD0ImpParProduct, -1000.0, 0.0);
cut->AddCut(VarManager::kDCAxy1, -0.1, 0.1);
cut->AddCut(VarManager::kDCAxy2, -0.1, 0.1);
cut->AddCut(VarManager::kPt1, 0.5, 100.0, false, VarManager::kPt, 0.0, 1.0);
cut->AddCut(VarManager::kPt1, 0.3, 100.0, false, VarManager::kPt, 1.0, 1.5);
cut->AddCut(VarManager::kPt1, 0.4, 100.0, false, VarManager::kPt, 1.5, 2.0);
cut->AddCut(VarManager::kPt1, 0.7, 100.0, false, VarManager::kPt, 2.0, 50.0);
cut->AddCut(VarManager::kPt2, 0.5, 100.0, false, VarManager::kPt, 0.0, 1.0);
cut->AddCut(VarManager::kPt2, 0.3, 100.0, false, VarManager::kPt, 1.0, 1.5);
cut->AddCut(VarManager::kPt2, 0.4, 100.0, false, VarManager::kPt, 1.5, 2.0);
cut->AddCut(VarManager::kPt2, 0.7, 100.0, false, VarManager::kPt, 2.0, 50.0);
return cut;
}

if (nameStr == "pairJpsi") {
cut->AddCut(VarManager::kMass, 2.8, 3.3);
return cut;
Expand Down Expand Up @@ -7339,6 +7460,35 @@ AnalysisCut* o2::aod::dqcuts::GetAnalysisCut(const char* cutName)
return cut;
}

if (nameStr == "alice3StandardKineD0") {
cut->AddCut(VarManager::kPt, 0.7, 1000.0);
cut->AddCut(VarManager::kEta, -2.5, 2.5); // Total tracker acceptance in v3b geomety
return cut;
}

if (nameStr == "alice3TOFEta") {
cut->AddCut(VarManager::kPt, 0.7, 1000.0);
cut->AddCut(VarManager::kEta, -2.0, 2.0); // Total tracker acceptance in v3b geomety
return cut;
}

if (nameStr == "alice3RICHEta") {
cut->AddCut(VarManager::kEta, -0.8, 0.8); // Total tracker acceptance in v3b geomety
return cut;
}

if (nameStr == "alice3KineTOFAcceptanceD0") {
cut->AddCut(VarManager::kPt, 0.7, 1000.0);
cut->AddCut(VarManager::kEta, -2.0, 2.0); // TOF acceptance in v3b geomety
return cut;
}

if (nameStr == "alice3KineRICHAcceptanceD0") {
cut->AddCut(VarManager::kPt, 0.7, 1000.0);
cut->AddCut(VarManager::kEta, -0.8, 0.8); // TOF acceptance in v3b geomety
return cut;
}

if (nameStr == "alice3LambdaCKine") {
cut->AddCut(VarManager::kPt, 0.2, 1000.0);
cut->AddCut(VarManager::kEta, -2.0, 2.0);
Expand Down Expand Up @@ -7398,42 +7548,98 @@ AnalysisCut* o2::aod::dqcuts::GetAnalysisCut(const char* cutName)
}

if (nameStr == "alice3iTOFPIDEl") {
cut->AddCut(VarManager::kInnerTOFnSigmaEl, -3.0, 3.0);
cut->AddCut(VarManager::kInnerTOFnSigmaEl, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
return cut;
}

if (nameStr == "alice3iTOFPIDPi") {
cut->AddCut(VarManager::kInnerTOFnSigmaPi, -3.0, 3.0);
cut->AddCut(VarManager::kInnerTOFnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
return cut;
}

if (nameStr == "alice3iTOFPIDKa") {
cut->AddCut(VarManager::kInnerTOFnSigmaKa, -3.0, 3.0);
cut->AddCut(VarManager::kInnerTOFnSigmaKa, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
return cut;
}

if (nameStr == "alice3iTOFPIDPr") {
cut->AddCut(VarManager::kInnerTOFnSigmaPr, -3.0, 3.0);
cut->AddCut(VarManager::kInnerTOFnSigmaPr, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
return cut;
}

if (nameStr == "alice3oTOFPIDEl") {
cut->AddCut(VarManager::kOuterTOFnSigmaEl, -3.0, 3.0);
cut->AddCut(VarManager::kOuterTOFnSigmaEl, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);
return cut;
}

if (nameStr == "alice3oTOFPIDPi") {
cut->AddCut(VarManager::kOuterTOFnSigmaPi, -3.0, 3.0);
cut->AddCut(VarManager::kOuterTOFnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);
return cut;
}

if (nameStr == "alice3oTOFPIDKa") {
cut->AddCut(VarManager::kOuterTOFnSigmaKa, -3.0, 3.0);
cut->AddCut(VarManager::kOuterTOFnSigmaKa, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);
return cut;
}

if (nameStr == "alice3oTOFPIDPr") {
cut->AddCut(VarManager::kOuterTOFnSigmaPr, -3.0, 3.0);
cut->AddCut(VarManager::kOuterTOFnSigmaPr, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);
return cut;
}

if (nameStr == "alice3D0KaonTOFPID") {
cut->AddCut(VarManager::kInnerTOFnSigmaKa, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kOuterTOFnSigmaKa, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);

cut->AddCut(VarManager::kInnerTOFnSigmaPi, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kInnerTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);

cut->AddCut(VarManager::kOuterTOFnSigmaPi, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);
cut->AddCut(VarManager::kOuterTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);
return cut;
}

if (nameStr == "alice3D0PionTOFPID") {
cut->AddCut(VarManager::kInnerTOFnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kOuterTOFnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);

cut->AddCut(VarManager::kInnerTOFnSigmaKa, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kInnerTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);

cut->AddCut(VarManager::kOuterTOFnSigmaKa, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);
cut->AddCut(VarManager::kOuterTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);
return cut;
}

if (nameStr == "alice3D0KaonRICHTOFPID") {
cut->AddCut(VarManager::kInnerTOFnSigmaKa, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kOuterTOFnSigmaKa, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);
cut->AddCut(VarManager::kRICHnSigmaKa, -3.0, 3.0, false, VarManager::kP, 2.0, 1000.0, false, VarManager::kHasRICHSigKa, 0.5, 1.5);

cut->AddCut(VarManager::kInnerTOFnSigmaPi, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kInnerTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);

cut->AddCut(VarManager::kOuterTOFnSigmaPi, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);
cut->AddCut(VarManager::kOuterTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);

cut->AddCut(VarManager::kRICHnSigmaPi, -3.0, 3.0, true, VarManager::kP, 0.57, 1000.0, false, VarManager::kRICHnSigmaPi, 0.5, 1.5);
cut->AddCut(VarManager::kRICHnSigmaPr, -3.0, 3.0, true, VarManager::kP, 3.8, 1000.0, false, VarManager::kRICHnSigmaPr, 0.5, 1.5);
return cut;
}

if (nameStr == "alice3D0PionRICHTOFPID") {
cut->AddCut(VarManager::kInnerTOFnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kOuterTOFnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.0, 2.5);
cut->AddCut(VarManager::kRICHnSigmaPi, -3.0, 3.0, false, VarManager::kP, 0.57, 1000.0, false, VarManager::kHasRICHSigKa, 0.5, 1.5);

cut->AddCut(VarManager::kInnerTOFnSigmaKa, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);
cut->AddCut(VarManager::kInnerTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 1.5);

cut->AddCut(VarManager::kOuterTOFnSigmaKa, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);
cut->AddCut(VarManager::kOuterTOFnSigmaPr, -3.0, 3.0, true, VarManager::kP, 0.0, 2.5);

cut->AddCut(VarManager::kRICHnSigmaKa, -3.0, 3.0, true, VarManager::kP, 2.0, 1000.0, false, VarManager::kRICHnSigmaPi, 0.5, 1.5);
cut->AddCut(VarManager::kRICHnSigmaPr, -3.0, 3.0, true, VarManager::kP, 3.8, 1000.0, false, VarManager::kRICHnSigmaPr, 0.5, 1.5);
return cut;
}

Expand Down
7 changes: 7 additions & 0 deletions PWGDQ/Core/HistogramsLibrary.cxx
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Expand Up @@ -1403,6 +1403,13 @@ void o2::aod::dqhistograms::DefineHistograms(HistogramManager* hm, const char* h
}
hm->AddHistogram(histClass, "Mass_PtLong", "", false, 500, alice3MassBins.data(), VarManager::kMass, 20, pTBins.data(), VarManager::kPt);
}
if (subGroupStr.Contains("alice3pair")) {
hm->AddHistogram(histClass, "CosinePointingAngle", "cos(#theta_{p})", false, 2000.0, -1.0, 1.0, VarManager::kCosPointingAngle);
hm->AddHistogram(histClass, "DCADaughters", "DCA_{dau}", false, 2000.0, -10.0, 10.0, VarManager::kD0DcaDaughters);
hm->AddHistogram(histClass, "ImpParProduct", "d_{k} #times d_{#pi}", false, 2000.0, -100.0, 100.0, VarManager::kD0ImpParProduct);
hm->AddHistogram(histClass, "DCAxy1", "DCA_{xy, 1}", false, 2000.0, -10.0, 10.0, VarManager::kDCAxy1);
hm->AddHistogram(histClass, "DCAxy2", "DCA_{xy, 2}", false, 2000.0, -10.0, 10.0, VarManager::kDCAxy2);
}
if (subGroupStr.Contains("alice3pbpb")) {
hm->AddHistogram(histClass, "Mass_Cent", "", false, 125, 0.0, 5.0, VarManager::kMass, 20, 0.0, 100.0, VarManager::kCent);
hm->AddHistogram(histClass, "Pt_CentFT0C", "", false, 100, 0.0, 10.0, VarManager::kPt, 20, 0.0, 100.0, VarManager::kCent);
Expand Down
10 changes: 10 additions & 0 deletions PWGDQ/Core/MCSignalLibrary.cxx
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Expand Up @@ -1754,6 +1754,16 @@ MCSignal* o2::aod::dqmcsignals::GetMCSignal(const char* name)
signal = new MCSignal(name, "Kaons from D+/- decays", {prong}, {-1});
return signal;
}
if (nameStr == "KFromD0") {
MCProng prong(2, {321, Pdg::kD0}, {true, true}, {false, false}, {0, 0}, {0, 0}, {false, false});
signal = new MCSignal(name, "Kaons from D0 decays", {prong}, {-1});
return signal;
}
if (nameStr == "PiFromD0") {
MCProng prong(2, {211, Pdg::kD0}, {true, true}, {false, false}, {0, 0}, {0, 0}, {false, false});
signal = new MCSignal(name, "Pions from D0 decays", {prong}, {-1});
return signal;
}
if (nameStr == "LambdaC") {
MCProng prong(1, {Pdg::kLambdaCPlus}, {true}, {false}, {0}, {0}, {false});
signal = new MCSignal(name, "Lambda_c", {prong}, {-1});
Expand Down
6 changes: 6 additions & 0 deletions PWGDQ/Core/VarManager.cxx
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Expand Up @@ -1347,6 +1347,10 @@ void VarManager::SetDefaultVarNames()
fgVariableUnits[kCosPointingAngle] = "";
fgVariableNames[kMCCosPointingAngle] = "MC cos(#theta_{pointing})";
fgVariableUnits[kMCCosPointingAngle] = "";
fgVariableNames[kD0DcaDaughters] = "DCA of D0 daughters";
fgVariableUnits[kD0DcaDaughters] = "";
fgVariableNames[kD0ImpParProduct] = "D0 impact parameter product";
fgVariableUnits[kD0ImpParProduct] = "";
fgVariableNames[kVertexingPz] = "Pz Pair";
fgVariableUnits[kVertexingPz] = "GeV/c";
fgVariableNames[kVertexingSV] = "Secondary Vertexing z";
Expand Down Expand Up @@ -2633,6 +2637,8 @@ void VarManager::SetDefaultVarNames()
fgVarNamesMap["kSignQuadDCAsigXY"] = kSignQuadDCAsigXY;
fgVarNamesMap["kCosPointingAngle"] = kCosPointingAngle;
fgVarNamesMap["kMCCosPointingAngle"] = kMCCosPointingAngle;
fgVarNamesMap["kD0ImpParProduct"] = kD0ImpParProduct;
fgVarNamesMap["kD0DcaDaughters"] = kD0DcaDaughters;
fgVarNamesMap["kImpParXYJpsi"] = kImpParXYJpsi;
fgVarNamesMap["kImpParXYK"] = kImpParXYK;
fgVarNamesMap["kDCATrackProd"] = kDCATrackProd;
Expand Down
20 changes: 20 additions & 0 deletions PWGDQ/Core/VarManager.h
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Original file line number Diff line number Diff line change
Expand Up @@ -874,6 +874,8 @@ class VarManager : public TObject
kQuadDCAsigXYZ,
kSignQuadDCAsigXY,
kCosPointingAngle,
kD0ImpParProduct,
kD0DcaDaughters,
kImpParXYJpsi,
kImpParXYK,
kDCATrackProd,
Expand Down Expand Up @@ -7688,6 +7690,14 @@ void VarManager::FillPairAlice3(T1 const& t1, T2 const& t2, float* values)
if (fgUsedVars[kPairPhiv]) {
values[kPairPhiv] = calculatePhiV<pairType>(t1, t2);
}

if constexpr (pairType == kDecayToKPi) {
if constexpr ((fillMap & TrackDCA) > 0 || (fillMap & ReducedTrackBarrel) > 0) {
values[kDCAxy1] = t1.dcaXY();
values[kDCAxy2] = t2.dcaXY();
values[kD0ImpParProduct] = t1.dcaXY() * t2.dcaXY();
}
}
}

template <typename M, typename T>
Expand Down Expand Up @@ -7792,7 +7802,17 @@ void VarManager::FillPairVertexingAlice3(C const& collision, T const& t1, T cons
v1 = {trackParVar0.getPt(), trackParVar0.getEta(), trackParVar0.getPhi(), m1};
v2 = {trackParVar1.getPt(), trackParVar1.getEta(), trackParVar1.getPhi(), m2};
v12 = v1 + v2;

const auto pos1 = trackParVar0.getXYZGlo();
const auto pos2 = trackParVar1.getXYZGlo();

const double dx = pos1.X() - pos2.X();
const double dy = pos1.Y() - pos2.Y();
const double dz = pos1.Z() - pos2.Z();

values[kD0DcaDaughters] = std::sqrt(dx * dx + dy * dy + dz * dz);
}

double phi = std::atan2(secondaryVertex[1] - collision.posY(), secondaryVertex[0] - collision.posX());
double theta = std::atan2(secondaryVertex[2] - collision.posZ(),
std::sqrt((secondaryVertex[0] - collision.posX()) * (secondaryVertex[0] - collision.posX()) +
Expand Down
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