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[PWGLF] cha01710analysis.cxx: add DCA selection #17465

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Merged
dmallick2 merged 8 commits into from
Aug 17, 2026
+9 −13
Merged

[PWGLF] cha01710analysis.cxx: add DCA selection #17465

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cffd6d1
add DCA selection
jikim1290 Aug 14, 2026
cf42530
fix
jikim1290 Aug 14, 2026
2f8d574
fix
jikim1290 Aug 14, 2026
683f11f
fix
jikim1290 Aug 15, 2026
17e06d6
fix
jikim1290 Aug 15, 2026
c8b6abd
fix
jikim1290 Aug 15, 2026
0468336
Please consider the following formatting changes
alibuild Aug 15, 2026
2ad1dda
Merge pull request #212 from alibuild/alibot-cleanup-17465
jikim1290 Aug 15, 2026
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22 changes: 9 additions & 13 deletions PWGLF/Tasks/Resonances/cha01710analysis.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,7 @@ struct Cha01710analysis {

HistogramRegistry histos{"histos", {}, OutputObjHandlingPolicy::AnalysisObject};

Service<o2::ccdb::BasicCCDBManager> ccdb;
Service<o2::ccdb::BasicCCDBManager> ccdb{};

Configurable<std::string> cfgUrl{"cfgUrl", "http://alice-ccdb.cern.ch", "CCDB URL"};

Expand Down Expand Up @@ -269,12 +269,7 @@ struct Cha01710analysis {
template <typename T>
bool selectPionDaughter(T const& track)
{
if (!track.hasTPC() || track.tpcNClsFound() < v0Cuts.cfgV0DaughterTPCNClsMin ||
track.pt() < v0Cuts.cfgV0DaughterPtMin || std::abs(track.eta()) > v0Cuts.cfgV0DaughterEtaMax ||
std::abs(track.tpcNSigmaPi()) > v0Cuts.cfgV0DaughterTPCNSigmaPiMax) {
return false;
}
return true;
return !(!track.hasTPC() || track.tpcNClsFound() < v0Cuts.cfgV0DaughterTPCNClsMin || track.pt() < v0Cuts.cfgV0DaughterPtMin || std::abs(track.eta()) > v0Cuts.cfgV0DaughterEtaMax || std::abs(track.tpcNSigmaPi()) > v0Cuts.cfgV0DaughterTPCNSigmaPiMax);
}

template <typename C, typename V>
Expand All @@ -284,7 +279,8 @@ struct Cha01710analysis {
float ctau = v0.distovertotmom(collision.posX(), collision.posY(), collision.posZ()) * constants::physics::MassK0Short;
if (v0.pt() < v0Cuts.cfgV0PtMin || v0.pt() > v0Cuts.cfgV0PtMax ||
v0.dcaV0daughters() > v0Cuts.cfgV0DcaDaughtersMax || v0.v0cosPA() < v0Cuts.cfgV0CosPAMin ||
v0.v0radius() < v0Cuts.cfgV0RadiusMin || std::abs(ctau) > v0Cuts.cfgV0CtauMax) {
v0.v0radius() < v0Cuts.cfgV0RadiusMin || std::abs(ctau) > v0Cuts.cfgV0CtauMax ||
std::abs(v0.dcapostopv()) < v0Cuts.cfgV0DaughterDcaPVMin || std::abs(v0.dcanegtopv()) < v0Cuts.cfgV0DaughterDcaPVMin) {
return V0MassRegion::kReject;
}
if (v0Cuts.cfgRejectLambda &&
Expand Down Expand Up @@ -354,8 +350,9 @@ struct Cha01710analysis {

float relPhi = TVector2::Phi_0_2pi((mother.Phi() - eventPlaneDet) * harmonic);
histos.fill(HIST("Pair/hMassVsK0SMass"), mother.M(), v0.mK0Short());
if (region != kSignal)
if (region != kSignal) {
continue;
}
if (track.sign() > 0) {
histos.fill(HIST("Pair/hSignalPlus"), mother.M(), mother.Pt(), centrality, relPhi);
} else if (track.sign() < 0) {
Expand All @@ -366,9 +363,9 @@ struct Cha01710analysis {
randomPhi += kaon.Phi();
auto kaonRot = ROOT::Math::PxPyPzMVector(kaon.Pt() * std::cos(randomPhi), kaon.Pt() * std::sin(randomPhi), track.pz(), o2::constants::physics::MassKaonCharged);
auto motherRot = k0 + kaonRot;
if (std::abs(motherRot.Rapidity()) > cfgMotherRapidityMax)
if (std::abs(motherRot.Rapidity()) > cfgMotherRapidityMax) {
continue;

}
if (track.sign() > 0) {
histos.fill(HIST("Pair/hRotatedPlus"), motherRot.M(), motherRot.Pt(), centrality);
} else if (track.sign() < 0) {
Expand All @@ -384,12 +381,11 @@ struct Cha01710analysis {
if (!selectEvent(collision)) {
return;
}
centrality = collision.centFT0M();
if (eventCuts.cfgCentEst == kFT0M) {
centrality = collision.centFT0M();
} else if (eventCuts.cfgCentEst == kFT0C) {
centrality = collision.centFT0C();
} else {
centrality = collision.centFT0M();
}

histos.fill(HIST("Event/hCentDist"), centrality);
Expand Down
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