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[PWGEM/Dilepton] add an option for phiv prefilter for LS pairs #16558

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Merged
dsekihat merged 1 commit into from
Jun 7, 2026
+19 −2
Merged

[PWGEM/Dilepton] add an option for phiv prefilter for LS pairs #16558

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1 change: 1 addition & 0 deletions PWGEM/Dilepton/Core/Dilepton.h
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Original file line number Diff line number Diff line change
Expand Up @@ -496,10 +496,10 @@
}

// In case override, don't proceed, please - no CCDB access required
if (d_bz_input > -990) {

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d_bz = d_bz_input;
o2::parameters::GRPMagField grpmag;
if (std::fabs(d_bz) > 1e-5) {

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[magic-number] 

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grpmag.setL3Current(30000.f / (d_bz / 5.0f));
}
o2::base::Propagator::initFieldFromGRP(&grpmag);
Expand Down Expand Up @@ -597,7 +597,7 @@
pair_dca_axis_title = "DCA_{ee}^{3D} (#sigma)";
if (cfgDCAType == 1) {
pair_dca_axis_title = "DCA_{ee}^{XY} (#sigma)";
} else if (cfgDCAType == 2) {

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pair_dca_axis_title = "DCA_{ee}^{Z} (#sigma)";
}
if (cfgUseSignedDCA) {
Expand Down Expand Up @@ -724,9 +724,9 @@
}

// event info
if (nmod == 2) {

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[magic-number] 

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o2::aod::pwgem::dilepton::utils::eventhistogram::addEventHistograms<2>(&fRegistry);
} else if (nmod == 3) {

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[magic-number] 

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o2::aod::pwgem::dilepton::utils::eventhistogram::addEventHistograms<3>(&fRegistry);
} else {
o2::aod::pwgem::dilepton::utils::eventhistogram::addEventHistograms<-1>(&fRegistry);
Expand Down Expand Up @@ -843,7 +843,7 @@
fDimuonCut.SetMatchingChi2MCHMID(0.f, dimuoncuts.cfg_max_matching_chi2_mchmid);
fDimuonCut.SetDCAxy(0.f, dimuoncuts.cfg_max_dcaxy);
fDimuonCut.SetRabs(dimuoncuts.cfg_min_rabs, dimuoncuts.cfg_max_rabs);
fDimuonCut.SetMaxPDCARabsDep([&](float rabs) { return (rabs < 26.5 ? 594.f : 324.f); });

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[magic-number] 

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fDimuonCut.SetMaxdPtdEtadPhiwrtMCHMID(dimuoncuts.cfg_max_relDPt_wrt_matchedMCHMID, dimuoncuts.cfg_max_DEta_wrt_matchedMCHMID, dimuoncuts.cfg_max_DPhi_wrt_matchedMCHMID); // this is relevant for global muons
fDimuonCut.SetMFTHitMap(dimuoncuts.requireMFTHitMap, dimuoncuts.requiredMFTDisks);
fDimuonCut.EnableTTCA(dimuoncuts.enableTTCA);
Expand All @@ -855,7 +855,7 @@
int ptbin = lower_bound(dielectroncuts.binsMLSCT.value.begin(), dielectroncuts.binsMLSCT.value.end(), track.pt()) - dielectroncuts.binsMLSCT.value.begin() - 1;
if (ptbin < 0) {
ptbin = 0;
} else if (static_cast<int>(dielectroncuts.binsMLSCT.value.size()) - 2 < ptbin) {

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ptbin = static_cast<int>(dielectroncuts.binsMLSCT.value.size()) - 2;
}

Expand All @@ -874,7 +874,7 @@
{
bool is_good = true;
for (const auto& qn : qvectors[nmod]) {
if (std::fabs(qn[0]) > 20.f || std::fabs(qn[1]) > 20.f) {

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is_good = false;
break;
}
Expand Down Expand Up @@ -978,7 +978,7 @@
} else {
pair_dca = o2::aod::pwgem::dilepton::utils::pairutil::pairDCAQuadSum(o2::aod::pwgem::dilepton::utils::emtrackutil::dcaXYinSigma(t1), o2::aod::pwgem::dilepton::utils::emtrackutil::dcaXYinSigma(t2));
}
} else if (cfgDCAType == 2) {

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[magic-number] 

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if (cfgUseSignedDCA) {
pair_dca = o2::aod::pwgem::dilepton::utils::pairutil::pairDCASignQuadSum(o2::aod::pwgem::dilepton::utils::emtrackutil::dcaZinSigma(t1), o2::aod::pwgem::dilepton::utils::emtrackutil::dcaZinSigma(t2), t1.sign(), t2.sign());
} else {
Expand All @@ -1005,7 +1005,7 @@
fRegistry.fill(HIST("Pair/") + HIST(event_pair_types[ev_id]) + HIST("uls/hMvsOpAng"), opAng, v12.M(), weight);
if (cfgDCAType == 1) {
fRegistry.fill(HIST("Pair/") + HIST(event_pair_types[ev_id]) + HIST("uls/hDCA1vsDCA2"), o2::aod::pwgem::dilepton::utils::emtrackutil::dcaXYinSigma(t1), o2::aod::pwgem::dilepton::utils::emtrackutil::dcaXYinSigma(t2), weight);
} else if (cfgDCAType == 2) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
fRegistry.fill(HIST("Pair/") + HIST(event_pair_types[ev_id]) + HIST("uls/hDCA1vsDCA2"), o2::aod::pwgem::dilepton::utils::emtrackutil::dcaZinSigma(t1), o2::aod::pwgem::dilepton::utils::emtrackutil::dcaZinSigma(t2), weight);
}
}
Expand Down Expand Up @@ -1289,6 +1289,7 @@
o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
Expand Down
1 change: 1 addition & 0 deletions PWGEM/Dilepton/Core/DileptonHadronMPC.h
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Expand Up @@ -980,6 +980,7 @@ struct DileptonHadronMPC {
o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
Expand Down
1 change: 1 addition & 0 deletions PWGEM/Dilepton/Core/DileptonMC.h
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Expand Up @@ -2532,6 +2532,7 @@ struct DileptonMC {
o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
Expand Down
1 change: 1 addition & 0 deletions PWGEM/Dilepton/Core/SingleTrackQC.h
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Expand Up @@ -884,6 +884,7 @@ struct SingleTrackQC {
o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
Expand Down
1 change: 1 addition & 0 deletions PWGEM/Dilepton/Core/SingleTrackQCMC.h
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Expand Up @@ -1157,6 +1157,7 @@ struct SingleTrackQCMC {
o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
Expand Down
13 changes: 12 additions & 1 deletion PWGEM/Dilepton/Tasks/prefilterDielectron.cxx
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Expand Up @@ -109,7 +109,8 @@ struct prefilterDielectron {
Configurable<float> cfg_max_mass{"cfg_max_mass", 0.0, "max mass for prefilter ULS"}; // region to be rejected

// for phiv prefilter
Configurable<bool> cfg_apply_phiv{"cfg_apply_phiv", false, "flag to apply phiv cut"}; // region to be rejected
Configurable<bool> cfg_apply_phiv{"cfg_apply_phiv", false, "flag to apply phiv cut for ULS"}; // region to be rejected
Configurable<bool> cfg_apply_phiv_ls{"cfg_apply_phiv_ls", false, "flag to apply phiv cut for LS"}; // region to be rejected
Configurable<float> cfg_phiv_slope{"cfg_phiv_slope", 0.0185, "slope for m vs. phiv"}; // region to be rejected
Configurable<float> cfg_phiv_intercept{"cfg_phiv_intercept", -0.0280, "intercept for m vs. phiv"}; // region to be rejected
Configurable<float> cfg_min_phiv{"cfg_min_phiv", -1.f, "min phiv"}; // region to be rejected
Expand Down Expand Up @@ -421,6 +422,11 @@ struct prefilterDielectron {
fRegistry.fill(HIST("Pair/before/lspp/hMvsPhiV"), phiv, v12.M());
fRegistry.fill(HIST("Pair/before/lspp/hDeltaEtaDeltaPhi"), dphi, deta);

if (dielectroncuts.cfg_apply_phiv_ls && ((v12.M() < dielectroncuts.cfg_phiv_slope * phiv + dielectroncuts.cfg_phiv_intercept) && (dielectroncuts.cfg_min_phiv < phiv && phiv < dielectroncuts.cfg_max_phiv))) {
map_pfb[pos1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
map_pfb[pos2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
}

if (dielectroncuts.cfg_apply_detadphi_ls && std::pow(deta / dielectroncuts.cfg_min_deta_ls, 2) + std::pow(dphi / dielectroncuts.cfg_min_dphi_ls, 2) < 1.f) {
map_pfb[pos1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
map_pfb[pos2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
Expand All @@ -445,6 +451,11 @@ struct prefilterDielectron {
fRegistry.fill(HIST("Pair/before/lsmm/hMvsPhiV"), phiv, v12.M());
fRegistry.fill(HIST("Pair/before/lsmm/hDeltaEtaDeltaPhi"), dphi, deta);

if (dielectroncuts.cfg_apply_phiv_ls && ((v12.M() < dielectroncuts.cfg_phiv_slope * phiv + dielectroncuts.cfg_phiv_intercept) && (dielectroncuts.cfg_min_phiv < phiv && phiv < dielectroncuts.cfg_max_phiv))) {
map_pfb[ele1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
map_pfb[ele2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
}

if (dielectroncuts.cfg_apply_detadphi_ls && std::pow(deta / dielectroncuts.cfg_min_deta_ls, 2) + std::pow(dphi / dielectroncuts.cfg_min_dphi_ls, 2) < 1.f) {
map_pfb[ele1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
map_pfb[ele2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
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3 changes: 2 additions & 1 deletion PWGEM/Dilepton/Utils/PairUtilities.h
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Original file line number Diff line number Diff line change
Expand Up @@ -71,10 +71,11 @@ enum class DileptonPrefilterBit : int {
};

enum class DileptonPrefilterBitDerived : int {
kMee = 0, // reject tracks from pi0 dalitz decays at very low mass where S/B > 1
kMee = 0, // reject tracks from pi0 dalitz decays at very low mass
kPhiV = 1, // reject tracks from photon conversions
kSplitOrMergedTrackLS = 2, // reject split or marged tracks in LS pairs based on momentum deta-dphi at PV
kSplitOrMergedTrackULS = 3, // reject split or marged tracks in ULS pairs based on momentum deta-dphi at PV
kPhiVLS = 4, // reject suspicious tracks. e.g. duplicated tracks or wrongly matched ITS-TPC tracks. Check mee vs. phiv.
};

using SMatrix55 = ROOT::Math::SMatrix<double, 5, 5, ROOT::Math::MatRepSym<double, 5>>;
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