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[PWGEM] LMee: Adding more DCA correlation histograms to various signals. #15602

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[PWGEM] LMee: Adding more DCA correlation histograms to various signals. #15602

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[PWGEM] LMee: Adding more DCA correlation histograms to various signals.
jjungIKF Mar 31, 2026
aa27f41
Merge branch 'master' into master
jjungIKF Apr 2, 2026
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31 changes: 27 additions & 4 deletions PWGEM/Dilepton/Core/DileptonMC.h
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Original file line number Diff line number Diff line change
Expand Up @@ -525,17 +525,31 @@
fRegistry.add(std::format("Pair/sm/NonPromptPi0/{0}hDeltaPtvsDCA", strSign), "#Delta p_{T,1}^{gen-rec} + #Delta p_{T,2}^{gen-rec} vs. DCA_{ee}", o2::framework::kTH2F, {axis_dca_narrow, axis_dpt}, true);
fRegistry.add(std::format("Pair/sm/NonPromptPi0/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", o2::framework::kTH2F, {axis_dca_track1, axis_dca_track2}, true);

fRegistry.add(std::format("Pair/sm/PromptJPsi/{0}hDeltaPtvsDCA", strSign), "#Delta p_{T,1}^{gen-rec} + #Delta p_{T,2}^{gen-rec} vs. DCA_{ee}", o2::framework::kTH2F, {axis_dca_narrow, axis_dpt}, true);
fRegistry.add(std::format("Pair/sm/PromptJPsi/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", o2::framework::kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/NonPromptJPsi/{0}hDeltaPtvsDCA", strSign), "#Delta p_{T,1}^{gen-rec} + #Delta p_{T,2}^{gen-rec} vs. DCA_{ee}", o2::framework::kTH2F, {axis_dca_narrow, axis_dpt}, true);
fRegistry.add(std::format("Pair/sm/NonPromptJPsi/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", o2::framework::kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/Eta/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
// fRegistry.add(std::format("Pair/sm/EtaPrime/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
// fRegistry.add(std::format("Pair/sm/Rho/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/Omega/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/Omega2ll/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/Phi/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/Phi2ll/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);

fRegistry.add(std::format("Pair/sm/PromptJPsi/{0}hDeltaPtvsDCA", strSign), "#Delta p_{T,1}^{gen-rec} + #Delta p_{T,2}^{gen-rec} vs. DCA_{ee}", kTH2F, {axis_dca_narrow, axis_dpt}, true);
fRegistry.add(std::format("Pair/sm/PromptJPsi/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/sm/NonPromptJPsi/{0}hDeltaPtvsDCA", strSign), "#Delta p_{T,1}^{gen-rec} + #Delta p_{T,2}^{gen-rec} vs. DCA_{ee}", kTH2F, {axis_dca_narrow, axis_dpt}, true);
fRegistry.add(std::format("Pair/sm/NonPromptJPsi/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
}
}

fRegistry.add("Pair/ccbar/c2l_c2l/uls/hs", "rec. dilepton", o2::framework::kTHnSparseD, {axis_mass, axis_pt, axis_y, axis_dphi_ee, axis_deta_ee, axis_cos_theta_pol, axis_phi_pol, axis_quadmom, axis_aco, axis_asym_pt, axis_dphi_e_ee, axis_dca}, true);
fRegistry.addClone("Pair/ccbar/c2l_c2l/uls/", "Pair/ccbar/c2l_c2l/lspp/");
fRegistry.addClone("Pair/ccbar/c2l_c2l/uls/", "Pair/ccbar/c2l_c2l/lsmm/");

if constexpr (pairtype == o2::aod::pwgem::dilepton::utils::pairutil::DileptonPairType::kDielectron) {
for (const auto& strSign : pair_sign_types) {
fRegistry.add(std::format("Pair/ccbar/c2l_c2l/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
}
}

fRegistry.addClone("Pair/ccbar/c2l_c2l/", "Pair/bbbar/b2l_b2l/");
fRegistry.addClone("Pair/ccbar/c2l_c2l/", "Pair/bbbar/b2c2l_b2c2l/");
fRegistry.addClone("Pair/ccbar/c2l_c2l/", "Pair/bbbar/b2c2l_b2l_sameb/");
Expand Down Expand Up @@ -565,6 +579,15 @@
}
}

if constexpr (pairtype == o2::aod::pwgem::dilepton::utils::pairutil::DileptonPairType::kDielectron) {
for (const auto& strSign : pair_sign_types) {
fRegistry.add(std::format("Pair/bbbar/b2l_b2l/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/bbbar/b2c2l_b2c2l/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/bbbar/b2c2l_b2l_sameb/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
fRegistry.add(std::format("Pair/bbbar/b2c2l_b2l_diffb/{0}hDCAz1vsDCAz2", strSign), "DCA_{z,1} vs DCA_{z,2}", kTH2F, {axis_dca_track1, axis_dca_track2}, true);
}
}

// for correlated bkg due to mis-identified hadrons, and true combinatorial bkg
fRegistry.add("Pair/corr_bkg_lh/uls/hs", "rec. bkg", o2::framework::kTHnSparseD, {axis_mass, axis_pt, axis_y, axis_dphi_ee, axis_deta_ee, axis_cos_theta_pol, axis_phi_pol, axis_quadmom, axis_aco, axis_asym_pt, axis_dphi_e_ee, axis_dca}, true);
fRegistry.addClone("Pair/corr_bkg_lh/uls/", "Pair/corr_bkg_lh/lspp/");
Expand Down Expand Up @@ -625,12 +648,12 @@
DefineDielectronCut();
leptonM1 = o2::constants::physics::MassElectron;
leptonM2 = o2::constants::physics::MassElectron;
pdg_lepton = 11;

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
} else if constexpr (pairtype == o2::aod::pwgem::dilepton::utils::pairutil::DileptonPairType::kDimuon) {
DefineDimuonCut();
leptonM1 = o2::constants::physics::MassMuon;
leptonM2 = o2::constants::physics::MassMuon;
pdg_lepton = 13;

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
}
if (doprocessNorm) {
fRegistry.addClone("Event/before/hCollisionCounter", "Event/norm/hCollisionCounter");
Expand Down Expand Up @@ -922,7 +945,7 @@
}

if (dilepton_source_types[sourceId].find("ccbar") != std::string_view::npos && cfgFillSeparateCharmHadronPairs) {
if (std::abs(pdgMotherC1) == 411 && std::abs(pdgMotherC2) == 411) {

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/Dplus_Dminus/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -930,7 +953,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/Dplus_Dminus/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if (std::abs(pdgMotherC1) == 421 && std::abs(pdgMotherC2) == 421) {

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/D0_D0bar/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -938,7 +961,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/D0_D0bar/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if (std::abs(pdgMotherC1) == 431 && std::abs(pdgMotherC2) == 431) {

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/Dsplus_Dsminus/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -946,7 +969,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/Dsplus_Dsminus/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if ((std::abs(pdgMotherC1) == 411 && std::abs(pdgMotherC2) == 421) || (std::abs(pdgMotherC2) == 411 && std::abs(pdgMotherC1) == 421)) {

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/Dpm_D0/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -954,7 +977,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/Dpm_D0/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if ((std::abs(pdgMotherC1) == 411 && std::abs(pdgMotherC2) == 431) || (std::abs(pdgMotherC2) == 411 && std::abs(pdgMotherC1) == 431)) {

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Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/Dpm_Dspm/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -962,7 +985,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/Dpm_Dspm/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if ((std::abs(pdgMotherC1) == 421 && std::abs(pdgMotherC2) == 431) || (std::abs(pdgMotherC2) == 421 && std::abs(pdgMotherC1) == 431)) {

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/D0_Dspm/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -970,7 +993,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/D0_Dspm/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if (std::abs(pdgMotherC1) == 4122 && std::abs(pdgMotherC2) == 4122) {

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[pdg/explicit-code] 

Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/Lcplus_Lcminus/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand All @@ -978,7 +1001,7 @@
} else if (sign1 < 0 && sign2 < 0) { // LS--
fRegistry.fill(HIST("Generated/ccbar/Lcplus_Lcminus/lsmm/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
}
} else if (std::abs(pdgMotherC1) == 4232 && std::abs(pdgMotherC2) == 4232) {

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Avoid hard-coded PDG codes. Use named values from PDG_t or o2::constants::physics::Pdg instead.
if (sign1 * sign2 < 0) { // ULS
fRegistry.fill(HIST("Generated/ccbar/Xicplus_Xicminus/uls/hs"), mass, pt, rapidity, dphi, deta, cos_thetaPol, phiPol, quadmom, aco, asym, dphi_e_ee, weight);
} else if (sign1 > 0 && sign2 > 0) { // LS++
Expand Down
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