diff --git a/PWGLF/DataModel/LFAntinCexTables.h b/PWGLF/DataModel/LFAntinCexTables.h index 9e8f4ce1ca8..c5e4dd080f6 100644 --- a/PWGLF/DataModel/LFAntinCexTables.h +++ b/PWGLF/DataModel/LFAntinCexTables.h @@ -41,6 +41,12 @@ DECLARE_SOA_COLUMN(McAngleDeg, mcAngleDeg, float); DECLARE_SOA_COLUMN(McVtxX, mcVtxX, float); DECLARE_SOA_COLUMN(McVtxY, mcVtxY, float); DECLARE_SOA_COLUMN(McVtxZ, mcVtxZ, float); +DECLARE_SOA_COLUMN(VtxNAll, vtxNAll, int16_t); +DECLARE_SOA_COLUMN(VtxNCh, vtxNCh, int16_t); +DECLARE_SOA_COLUMN(VtxNNeut, vtxNNeut, int16_t); +DECLARE_SOA_COLUMN(VtxNPi0, vtxNPi0, int16_t); +DECLARE_SOA_COLUMN(VtxNGamma, vtxNGamma, int16_t); +DECLARE_SOA_COLUMN(VtxNN, vtxNN, int16_t); // Tracks (pair, fitter) DECLARE_SOA_COLUMN(TrkPairP, trkPairP, float); @@ -85,6 +91,7 @@ DECLARE_SOA_COLUMN(AntipTrkNClsIts, antipTrkNClsIts, int16_t); DECLARE_SOA_COLUMN(SelMask, selMask, uint32_t); DECLARE_SOA_COLUMN(PairPointingAngleDeg, pairPointingAngleDeg, float); +DECLARE_SOA_COLUMN(PvsvAngleZDeg, pvsvAngleZDeg, float); DECLARE_SOA_COLUMN(PairPBalance, pairPBalance, float); DECLARE_SOA_COLUMN(PairPtBalance, pairPtBalance, float); DECLARE_SOA_COLUMN(PairQ, pairQ, float); @@ -121,6 +128,7 @@ DECLARE_SOA_TABLE(AntinCexPairs, "AOD", "ANTINCEX", antin_cex::MotherPdg, antin_cex::ColId, antin_cex::PId, antin_cex::AntipId, antin_cex::McPairP, antin_cex::McPairPt, antin_cex::McPairPz, antin_cex::McDplane, antin_cex::McAngleDeg, antin_cex::McVtxX, antin_cex::McVtxY, antin_cex::McVtxZ, + antin_cex::VtxNAll, antin_cex::VtxNCh, antin_cex::VtxNNeut, antin_cex::VtxNPi0, antin_cex::VtxNGamma, antin_cex::VtxNN, antin_cex::TrkPairP, antin_cex::TrkPairPt, antin_cex::TrkPairPz, antin_cex::TrkAngleDeg, antin_cex::TrkVtxfitDcaPair, antin_cex::TrkVtxfitR, antin_cex::TrkVtxfitDistToPv, antin_cex::TrkVtxfitSecVtxX, antin_cex::TrkVtxfitSecVtxY, antin_cex::TrkVtxfitSecVtxZ, @@ -129,7 +137,7 @@ DECLARE_SOA_TABLE(AntinCexPairs, "AOD", "ANTINCEX", antin_cex::PTrkP, antin_cex::PTrkPx, antin_cex::PTrkPy, antin_cex::PTrkPz, antin_cex::PTrkEta, antin_cex::PTrkTpcSignal, antin_cex::PTrkNClsIts, antin_cex::AntipTrkP, antin_cex::AntipTrkPx, antin_cex::AntipTrkPy, antin_cex::AntipTrkPz, antin_cex::AntipTrkEta, antin_cex::AntipTrkTpcSignal, antin_cex::AntipTrkNClsIts, antin_cex::SelMask, - antin_cex::PairPointingAngleDeg, antin_cex::PairPBalance, antin_cex::PairPtBalance, antin_cex::PairQ, + antin_cex::PairPointingAngleDeg, antin_cex::PvsvAngleZDeg, antin_cex::PairPBalance, antin_cex::PairPtBalance, antin_cex::PairQ, antin_cex::DPairP, antin_cex::DPairPt, antin_cex::DPairPz, antin_cex::DOpenAngle, antin_cex::SVNearestLayerId, antin_cex::SVDeltaRToLayer, antin_cex::PTrkItsHitMap, antin_cex::APTrkItsHitMap, antin_cex::PLayersOk, antin_cex::APLayersOk, diff --git a/PWGLF/TableProducer/Nuspex/nucleiAntineutronCex.cxx b/PWGLF/TableProducer/Nuspex/nucleiAntineutronCex.cxx index 4ba3316a0b7..9e65b08eed9 100644 --- a/PWGLF/TableProducer/Nuspex/nucleiAntineutronCex.cxx +++ b/PWGLF/TableProducer/Nuspex/nucleiAntineutronCex.cxx @@ -28,6 +28,7 @@ #include #include +#include #include #include #include @@ -53,7 +54,7 @@ struct NucleiAntineutronCex { static constexpr double kIts2MaxR = 48.0; // ITS2 max radius [cm] static constexpr double kIts2MaxVz = 39.0; // ITS2 max |vz| [cm] static constexpr double kAccMaxEta = 1.2; // acceptance |eta| - static constexpr double kAccMaxVz = 5.3; // acceptance |vz| [cm] + static constexpr double kAccMaxVz = 10.0; // acceptance |vz| [cm] static constexpr double kStrictEta = 0.9; // tighter eta cut static constexpr double kInitDplane = 10.0; // init dplane static constexpr double kHuge = 1e9; // fallback for bad denom @@ -105,6 +106,25 @@ struct NucleiAntineutronCex { // test (MC) histos.add("antip_test", "Secondary antiprotons;|p| (GeV/c);Entries", kTH1F, {{100, 0., 10.}}); + // Process enum breakdown (secondary antiproton that anchors the SV) + histos.add("hProcEnumAP_CEX", "procEnum of secondary #bar{p} (CEX);procEnum;Entries", kTH1I, {{100, -0.5, 99.5}}); + histos.add("hProcEnumAP_BG", "procEnum of secondary #bar{p} (BG);procEnum;Entries", kTH1I, {{100, -0.5, 99.5}}); + + // Multiplicity/composition at the SV (MC truth, for FINAL selected candidates) + histos.add("hVtxNAll_CEX", "N(all) secondaries at SV (CEX);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNAll_BG", "N(all) secondaries at SV (BG);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNCh_CEX", "N(charged) secondaries at SV (CEX);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNCh_BG", "N(charged) secondaries at SV (BG);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNNeut_CEX", "N(neutral) secondaries at SV (CEX);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNNeut_BG", "N(neutral) secondaries at SV (BG);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + + histos.add("hVtxNPi0_CEX", "N(#pi^{0}) at SV (CEX);N;Entries", kTH1I, {{40, -0.5, 39.5}}); + histos.add("hVtxNPi0_BG", "N(#pi^{0}) at SV (BG);N;Entries", kTH1I, {{40, -0.5, 39.5}}); + histos.add("hVtxNGamma_CEX", "N(#gamma) at SV (CEX);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNGamma_BG", "N(#gamma) at SV (BG);N;Entries", kTH1I, {{60, -0.5, 59.5}}); + histos.add("hVtxNN_CEX", "N(n) at SV (CEX);N;Entries", kTH1I, {{40, -0.5, 39.5}}); + histos.add("hVtxNN_BG", "N(n) at SV (BG);N;Entries", kTH1I, {{40, -0.5, 39.5}}); + // CEX pair from antineutron (MC) histos.add("cexPairMcP", "CEX pair total momentum;|p| (GeV/c);Entries", kTH1F, {{100, 0., 10.}}); histos.add("cexPairMcPt", "CEX pair p_{T};p_{T} (GeV/c);Entries", kTH1F, {{100, 0., 10.}}); @@ -130,6 +150,13 @@ struct NucleiAntineutronCex { histos.add("cexbg_pairmc_vtxz", "Background secondary vertex Z;Z (cm);Entries", kTH1F, {{200, -60., 60.}}); histos.add("cexbg_pairmc_pITScuts", "Background momentum (ITS cuts);|p| (GeV/c);Entries", kTH1F, {{100, 0., 10.}}); + histos.add("hDeltaP_CEX", "|p_{mother}-Σp_{SV}| (CEX);Δp (GeV/c);Entries", kTH1F, {{200, 0., 10.}}); + histos.add("hDeltaP_BG", "|p_{mother}-Σp_{SV}| (BG);Δp (GeV/c);Entries", kTH1F, {{200, 0., 10.}}); + + // Mother IB hits + histos.add("hMotherNHitIB_CEX", "Mother #bar{p} IB hit layers (L0-L2) (CEX);N_{IB layers};Entries", kTH1I, {{4, -0.5, 3.5}}); + histos.add("hMotherNHitIB_BG", "Mother #bar{p} IB hit layers (L0-L2) (BG);N_{IB layers};Entries", kTH1I, {{4, -0.5, 3.5}}); + // CEX pair from antineutron (TRK) histos.add("cex_pairtrk_angle", "Pair opening angle (tracks);Angle (°);Entries", kTH1F, {{180, 0., 180.}}); histos.add("cexPairTrkP", "Pair momentum (tracks);|p| (GeV/c);Entries", kTH1F, {{120, 0., 12.}}); @@ -265,21 +292,27 @@ struct NucleiAntineutronCex { // Primary mother bool hasPrimaryMotherAntip = false; double motherPt = 0.0; + double motherPx = 0.0; + double motherPy = 0.0; double motherPz = 0.0; double motherVz = 0.0; double motherP = 0.0; double motherEta = 0.0; int motherPdg = 0; + int motherId = -1; for (const auto& mother : particle.mothers_as()) { if (mother.isPhysicalPrimary()) { hasPrimaryMotherAntip = true; motherPt = mother.pt(); + motherPx = mother.px(); + motherPy = mother.py(); motherPz = mother.pz(); motherVz = mother.vz(); motherP = mother.p(); motherEta = mother.eta(); motherPdg = mother.pdgCode(); + motherId = mother.globalIndex(); break; } } @@ -530,6 +563,10 @@ struct NucleiAntineutronCex { int8_t antipTrkItsPidValid = 0; float antipTrkTgl = 0.f; + bool motherHasTrack = false; + uint16_t motherItsMap = 0; + int motherNHitIB = 0; // number of hits in IB (L0-L2) + o2::aod::ITSResponse itsResponse; for (const auto& track : tracks) { @@ -557,6 +594,12 @@ struct NucleiAntineutronCex { int nITS = track.itsNCls(); bool layerCondition = (!hitIB) && hitOuter && (nITS >= kMinItsHits); + if (mc.globalIndex() == motherId) { + motherHasTrack = true; + motherItsMap = static_cast(track.itsClusterMap()); + motherNHitIB = static_cast(hitL0) + static_cast(hitL1) + static_cast(hitL2); + } + if (mc.globalIndex() == antipId) { antipTrkP = track.p(); antipTrkPx = track.px(); @@ -695,6 +738,9 @@ struct NucleiAntineutronCex { const TVector3 pv2sv(secX - pvtxX, secY - pvtxY, secZ - pvtxZ); const double pairPointingAngleDeg = pv2sv.Angle(total_trk_pVec) * Rad2Deg; + const TVector3 zAxis(0., 0., 1.); + const double pvsvAngleZDeg = pv2sv.Angle(zAxis) * Rad2Deg; + const double pP = pVecProton_trk.Mag(); const double pAP = AntipVecProton_trk.Mag(); const double ptP = pVecProton_trk.Pt(); @@ -757,11 +803,106 @@ struct NucleiAntineutronCex { const bool isCex = (motherPdg == -kNeutron); + // Nature of the process + if (isCex) { + histos.fill(HIST("hProcEnumAP_CEX"), static_cast(procEnum)); + } else { + histos.fill(HIST("hProcEnumAP_BG"), static_cast(procEnum)); + } + + // Count material secondaries produced at the same SV as the selected secondary antiproton. + int vtxNAll = 0; + int vtxNCh = 0; + int vtxNNeut = 0; + int vtxNPi0 = 0; + int vtxNGamma = 0; + int vtxNN = 0; + double sumPx_vtx = 0.0; + double sumPy_vtx = 0.0; + double sumPz_vtx = 0.0; + auto* pdgDB = TDatabasePDG::Instance(); + + for (const auto& particle5 : mcPartsThis) { + if (particle5.mcCollisionId() != colId) { + continue; + } + // Same SV (use the SV of the selected secondary antiproton) + if (std::abs(particle5.vx() - antipVx) >= kVtxTol || std::abs(particle5.vy() - antipVy) >= kVtxTol || std::abs(particle5.vz() - antipVz) >= kVtxTol) { + continue; + } + const auto proc5Enum = particle5.getProcess(); + const bool isSecondaryFromMaterial5 = + (!particle5.producedByGenerator()) && (proc5Enum == kPHadronic || proc5Enum == kPHInhelastic); + if (!isSecondaryFromMaterial5) { + continue; + } + ++vtxNAll; + sumPx_vtx += particle5.px(); + sumPy_vtx += particle5.py(); + sumPz_vtx += particle5.pz(); + const int pdg = particle5.pdgCode(); + if (pdg == kPi0) { + ++vtxNPi0; + } + if (pdg == kGamma) { + ++vtxNGamma; + } + if (pdg == kNeutron) { + ++vtxNN; + } + // Charged vs neutral via PDG database (Charge() is in units of e/3) + double q = 0.0; + if (auto* part = pdgDB->GetParticle(pdg)) { + q = part->Charge() / 3.0; + } + if (std::abs(q) > 0.0) { + ++vtxNCh; + } else { + ++vtxNN; + } + } + + // Fill histos (final selected candidates only) + if (isCex) { + histos.fill(HIST("hVtxNAll_CEX"), vtxNAll); + histos.fill(HIST("hVtxNCh_CEX"), vtxNCh); + histos.fill(HIST("hVtxNNeut_CEX"), vtxNNeut); + histos.fill(HIST("hVtxNPi0_CEX"), vtxNPi0); + histos.fill(HIST("hVtxNGamma_CEX"), vtxNGamma); + histos.fill(HIST("hVtxNN_CEX"), vtxNN); + } else { + histos.fill(HIST("hVtxNAll_BG"), vtxNAll); + histos.fill(HIST("hVtxNCh_BG"), vtxNCh); + histos.fill(HIST("hVtxNNeut_BG"), vtxNNeut); + histos.fill(HIST("hVtxNPi0_BG"), vtxNPi0); + histos.fill(HIST("hVtxNGamma_BG"), vtxNGamma); + histos.fill(HIST("hVtxNN_BG"), vtxNN); + } + const float vtxfitDX = secX - antipVx; const float vtxfitDY = secY - antipVy; const float vtxfitDZ = secZ - antipVz; const float vtxfitD3D = std::sqrt(vtxfitDX * vtxfitDX + vtxfitDY * vtxfitDY + vtxfitDZ * vtxfitDZ); + const double dPx = motherPx - sumPx_vtx; + const double dPy = motherPy - sumPy_vtx; + const double dPz = motherPz - sumPz_vtx; + const double deltaP = std::sqrt(dPx * dPx + dPy * dPy + dPz * dPz); + + if (isCex) { + histos.fill(HIST("hDeltaP_CEX"), deltaP); + } else { + histos.fill(HIST("hDeltaP_BG"), deltaP); + } + + if (motherHasTrack) { + if (isCex) { + histos.fill(HIST("hMotherNHitIB_CEX"), motherNHitIB); + } else { + histos.fill(HIST("hMotherNHitIB_BG"), motherNHitIB); + } + } + const uint32_t selMask = 0u; outPairs( @@ -780,6 +921,13 @@ struct NucleiAntineutronCex { antipVy, antipVz, + static_cast(vtxNAll), + static_cast(vtxNCh), + static_cast(vtxNNeut), + static_cast(vtxNPi0), + static_cast(vtxNGamma), + static_cast(vtxNN), + cexPairTrkP, cexPairTrkPt, cexPairTrkPz, @@ -818,6 +966,7 @@ struct NucleiAntineutronCex { selMask, pairPointingAngleDeg, + pvsvAngleZDeg, pairPBalance, pairPtBalance, pairQ,