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[PWGEM,PWGEM-36] Fix some bugs in flow task #15996

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Merged
mhemmer-cern merged 1 commit into from
Apr 28, 2026
Merged

[PWGEM,PWGEM-36] Fix some bugs in flow task #15996

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15 changes: 8 additions & 7 deletions PWGEM/PhotonMeson/Tasks/taskPi0FlowEMC.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,6 @@ struct TaskPi0FlowEMC {
Configurable<bool> cfgDoM02{"cfgDoM02", false, "Flag to enable flow vs M02 for single photons"};
Configurable<bool> cfgDoPlaneQA{"cfgDoPlaneQA", false, "Flag to enable QA plots comparing in and out of plane"};
Configurable<float> cfgMaxQVector{"cfgMaxQVector", 20.f, "Maximum allowed absolute QVector value."};
Configurable<float> cfgMaxAsymmetry{"cfgMaxAsymmetry", 0.1f, "Maximum allowed asymmetry for photon pairs used in calibration."};

// configurable axis
ConfigurableAxis thnConfigAxisInvMass{"thnConfigAxisInvMass", {400, 0.0, 0.8}, "invariant mass axis for the neutral meson"};
Expand Down Expand Up @@ -226,7 +225,7 @@ struct TaskPi0FlowEMC {
std::string prefix = "mixingConfig";
ConfigurableAxis cfgVtxBins{"cfgVtxBins", {VARIABLE_WIDTH, -10.0f, -8.f, -6.f, -4.f, -2.f, 0.f, 2.f, 4.f, 6.f, 8.f, 10.f}, "Mixing bins - z-vertex"};
ConfigurableAxis cfgCentBins{"cfgCentBins", {VARIABLE_WIDTH, 0.0f, 5.0f, 10.0f, 20.0f, 30.0f, 40.0f, 50.0f, 60.0f, 70.0f, 80.0f, 90.0f, 100.f}, "Mixing bins - centrality"};
ConfigurableAxis cfgEPBins{"cfgEPBins", {8, o2::constants::math::PIHalf, o2::constants::math::PIHalf}, "Mixing bins - event plane angle"};
ConfigurableAxis cfgEPBins{"cfgEPBins", {8, -o2::constants::math::PIHalf, o2::constants::math::PIHalf}, "Mixing bins - event plane angle"};
ConfigurableAxis cfgOccupancyBins{"cfgOccupancyBins", {VARIABLE_WIDTH, 0, 100, 500, 1000, 2000}, "Mixing bins - occupancy"};
Configurable<int> cfgMixingDepth{"cfgMixingDepth", 2, "Mixing depth"};
} mixingConfig;
Expand Down Expand Up @@ -1342,6 +1341,10 @@ struct TaskPi0FlowEMC {
// event selection
continue;
}
if (!isQvecGood(getAllQvec(c1)) || !isQvecGood(getAllQvec(c2))) {
// selection based on QVector
continue;
}
runNow = c1.runNumber();
if (runNow != runBefore) {
initCCDB(c1);
Expand Down Expand Up @@ -1440,8 +1443,6 @@ struct TaskPi0FlowEMC {
registry.fill(HIST("clusterQA/hEClusterBefore"), photon.e()); // before cuts
registry.fill(HIST("clusterQA/hClusterEtaPhiBefore"), photon.phi(), photon.eta()); // before cuts
}
auto matchedPrimsPerCluster = matchedPrims.sliceBy(perEMCClusterMT, photon.globalIndex());
auto matchedSecondsPerCluster = matchedSeconds.sliceBy(perEMCClusterMS, photon.globalIndex());
if (!(emcFlags.test(photon.globalIndex()))) {
continue;
}
Expand All @@ -1468,7 +1469,7 @@ struct TaskPi0FlowEMC {
registry.fill(HIST("p3DM02Flow"), photon.m02(), photon.pt(), cent, scalprodCand);
registry.fill(HIST("h3DSparsePi0"), photon.m02(), photon.pt(), cent);
}
return;
continue;
} // end of loop over single cluster
} // end of loop over collisions
} // processM02
Expand Down Expand Up @@ -1500,8 +1501,8 @@ struct TaskPi0FlowEMC {
continue;
}

ROOT::Math::PtEtaPhiMVector v1(g1.pt(), g1.eta(), g1.phi(), 0.);
ROOT::Math::PtEtaPhiMVector v2(g2.pt(), g2.eta(), g2.phi(), 0.);
ROOT::Math::PtEtaPhiMVector v1(g1.corrPt(), g1.eta(), g1.phi(), 0.);
ROOT::Math::PtEtaPhiMVector v2(g2.corrPt(), g2.eta(), g2.phi(), 0.);
ROOT::Math::PtEtaPhiMVector vMeson = v1 + v2;

float openingAngle = std::acos(v1.Vect().Dot(v2.Vect()) / (v1.P() * v2.P()));
Expand Down
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