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[PWGEM,PWGEM-36] Pi0Flow - Fix TanTheta cut being applied most of the time #9553

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Merged
mhemmer-cern merged 2 commits into from
Jan 27, 2025
Merged

[PWGEM,PWGEM-36] Pi0Flow - Fix TanTheta cut being applied most of the time #9553

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40d7d43
[PWGEM,PWGEM-36] Pi0Flow - Fix TanTheta cut being applied most of the…
mhemmer-cern Jan 27, 2025
f23e849
[PWGEM,PWGEM-36] Pi0Flow - Mixed event fills background histo
mhemmer-cern Jan 27, 2025
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21 changes: 12 additions & 9 deletions PWGEM/PhotonMeson/Tasks/taskPi0FlowEMC.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -410,12 +410,14 @@ struct TaskPi0FlowEMC {
/// \param pt is the transverse momentum of the candidate
/// \param cent is the centrality of the collision
/// \param sp is the scalar product
template <const int histType>
void fillThn(float& mass,
float& pt,
float& cent,
float& sp)
{
registry.fill(HIST("hSparsePi0Flow"), mass, pt, cent, sp);
static constexpr std::string_view HistTypes[2] = {"hSparsePi0Flow", "hSparseBkgFlow"};
registry.fill(HIST(HistTypes[histType]), mass, pt, cent, sp);
}

/// Get the centrality
Expand Down Expand Up @@ -689,7 +691,7 @@ struct TaskPi0FlowEMC {
if (mesonConfig.enableTanThetadPhi) {
float dTheta = photon1.Theta() - photon3.Theta();
float dPhi = photon1.Phi() - photon3.Phi();
if (mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
if (mesonConfig.enableTanThetadPhi && mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
registry.fill(HIST("hSparseBkgFlow"), mother1.M(), mother1.Pt(), cent, scalprodCand1);
}
} else {
Expand All @@ -712,7 +714,7 @@ struct TaskPi0FlowEMC {
if (mesonConfig.enableTanThetadPhi) {
float dTheta = photon2.Theta() - photon3.Theta();
float dPhi = photon2.Phi() - photon3.Phi();
if (mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
if (mesonConfig.enableTanThetadPhi && mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
registry.fill(HIST("hSparseBkgFlow"), mother2.M(), mother2.Pt(), cent, scalprodCand2);
}
} else {
Expand Down Expand Up @@ -772,7 +774,7 @@ struct TaskPi0FlowEMC {
if (mesonConfig.enableTanThetadPhi) {
float dTheta = photon1.Theta() - photon3.Theta();
float dPhi = photon1.Phi() - photon3.Phi();
if (mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
if (mesonConfig.enableTanThetadPhi && mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
registry.fill(HIST("hSparseCalibBack"), mother1.M(), mother1.E() / 2., cent);
}
} else {
Expand All @@ -790,7 +792,7 @@ struct TaskPi0FlowEMC {
if (mesonConfig.enableTanThetadPhi) {
float dTheta = photon2.Theta() - photon3.Theta();
float dPhi = photon2.Phi() - photon3.Phi();
if (mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
if (mesonConfig.enableTanThetadPhi && mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
registry.fill(HIST("hSparseCalibBack"), mother2.M(), mother2.E() / 2., cent);
}
} else {
Expand All @@ -806,6 +808,7 @@ struct TaskPi0FlowEMC {
/// Compute the scalar product
/// \param collision is the collision with the Q vector information and event plane
/// \param meson are the selected candidates
template <const int histType>
void runFlowAnalysis(CollsWithQvecs::iterator const& collision, ROOT::Math::PtEtaPhiMVector const& meson)
{
auto [xQVec, yQVec] = getQvec(collision, qvecDetector);
Expand All @@ -823,7 +826,7 @@ struct TaskPi0FlowEMC {
scalprodCand = scalprodCand / h1SPResolution->GetBinContent(h1SPResolution->FindBin(cent + epsilon));
}

fillThn(massCand, ptCand, cent, scalprodCand);
fillThn<histType>(massCand, ptCand, cent, scalprodCand);
return;
}

Expand Down Expand Up @@ -950,7 +953,7 @@ struct TaskPi0FlowEMC {
continue;
}
registry.fill(HIST("hClusterCuts"), 6);
runFlowAnalysis(collision, vMeson);
runFlowAnalysis<0>(collision, vMeson);
}
if (cfgDoRotation) {
if (nColl % cfgDownsampling.value == 0) {
Expand Down Expand Up @@ -1030,12 +1033,12 @@ struct TaskPi0FlowEMC {
registry.fill(HIST("hTanThetaPhi"), vMeson.M(), getAngleDegree(std::atan(dTheta / dPhi)));
registry.fill(HIST("hAlphaPt"), (v1.E() - v2.E()) / (v1.E() + v2.E()), vMeson.Pt());
}
if (mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
if (mesonConfig.enableTanThetadPhi && mesonConfig.minTanThetadPhi > std::fabs(getAngleDegree(std::atan(dTheta / dPhi)))) {
registry.fill(HIST("hClusterCuts"), 5);
continue;
}
registry.fill(HIST("hClusterCuts"), 6);
runFlowAnalysis(c1, vMeson);
runFlowAnalysis<1>(c1, vMeson);
}
}
}
Expand Down
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