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[PWGCF] Add invmass cut in cascDiHadronCorr.cxx #16791

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Merged
wenyaCern merged 1 commit into from
Jun 24, 2026
+15 −1
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[PWGCF] Add invmass cut in cascDiHadronCorr.cxx #16791

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16 changes: 15 additions & 1 deletion PWGCF/TwoParticleCorrelations/Tasks/cascDiHadronCorr.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -266,6 +266,9 @@ struct CascDiHadronCorr {
using ValidCollisions = std::vector<std::vector<ValidCollision>>;
ValidCollisions validCollisions;

double masslow = 0;
double massup = 0;

// persistent caches
std::vector<float> efficiencyAssociatedCache;

Expand All @@ -278,6 +281,10 @@ struct CascDiHadronCorr {
}
const AxisSpec axisPhi{72, 0.0, constants::math::TwoPI, "#varphi"};
const AxisSpec axisEta{40, -1., 1., "#eta"};
o2::framework::AxisSpec axismass = axisInvMass;
int nMasssBinEdges = axismass.binEdges.size();
masslow = axismass.binEdges[0];
massup = axismass.binEdges[nMasssBinEdges - 1];
cfgNSigma = cfgNSigmapid;

ccdb->setURL("http://alice-ccdb.cern.ch");
Expand Down Expand Up @@ -530,6 +537,8 @@ struct CascDiHadronCorr {
return false;

if (cfgOutputXi) {
if (casc.mXi() > massup || casc.mXi() < masslow)
return false;
if (casc.sign() < 0) {
if (std::fabs(bachelor.tpcNSigmaPi()) > cfgNSigma[0])
return false;
Expand Down Expand Up @@ -571,6 +580,8 @@ struct CascDiHadronCorr {
return false;
}
if (cfgOutputOmega) {
if (casc.mOmega() > massup || casc.mOmega() < masslow)
return false;
if (casc.sign() < 0) {
if (std::fabs(bachelor.tpcNSigmaKa()) > cfgNSigma[2])
return false;
Expand Down Expand Up @@ -817,7 +828,10 @@ struct CascDiHadronCorr {
float deltaPhi = RecoDecay::constrainAngle(track1.phi() - track2.phi, -PIHalf);
float deltaEta = track1.eta() - track2.eta;

mixed->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, eventWeight * triggerWeight * associatedWeight);
if (cfgOutputXi)
same->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, track1.mXi(), eventWeight * triggerWeight * associatedWeight);
if (cfgOutputOmega)
same->getPairHist()->Fill(step, fSampleIndex, posZ, track1.pt(), track2.pt, deltaPhi, deltaEta, track1.mOmega(), eventWeight * triggerWeight * associatedWeight);
registry.fill(HIST("deltaEta_deltaPhi_mixed"), deltaPhi, deltaEta, eventWeight * triggerWeight * associatedWeight);
}
}
Expand Down
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