[PWGUD] use get track size and add flowMC #15679
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| // Copyright 2019-2020 CERN and copyright holders of ALICE O2. | ||
| // See https://alice-o2.web.cern.ch/copyright for details of the copyright holders. | ||
| // All rights not expressly granted are reserved. | ||
| // | ||
| // This software is distributed under the terms of the GNU General Public | ||
| // License v3 (GPL Version 3), copied verbatim in the file "COPYING". | ||
| // | ||
| // In applying this license CERN does not waive the privileges and immunities | ||
| // granted to it by virtue of its status as an Intergovernmental Organization | ||
| // or submit itself to any jurisdiction. | ||
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| /// \file flowMcUpc.cxx | ||
| /// \author Zhiyong Lu (zhiyong.lu@cern.ch), Yongxi Du (yongxi.du@cern.ch) | ||
| /// \since Apr/2/2026 | ||
| /// \brief flow efficiency analysis on UPC MC | ||
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| #include "PWGUD/Core/SGSelector.h" | ||
| #include "PWGUD/DataModel/UDTables.h" | ||
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| #include "Common/Core/RecoDecay.h" | ||
| #include "Common/Core/TrackSelection.h" | ||
| #include "Common/Core/TrackSelectionDefaults.h" | ||
| #include "Common/Core/trackUtilities.h" | ||
| #include "Common/DataModel/TrackSelectionTables.h" | ||
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| #include <CCDB/BasicCCDBManager.h> | ||
| #include <CommonConstants/MathConstants.h> | ||
| #include <CommonConstants/PhysicsConstants.h> | ||
| #include <Framework/ASoAHelpers.h> | ||
| #include <Framework/AnalysisDataModel.h> | ||
| #include <Framework/AnalysisTask.h> | ||
| #include <Framework/HistogramRegistry.h> | ||
| #include <Framework/RunningWorkflowInfo.h> | ||
| #include <Framework/runDataProcessing.h> | ||
| #include <ReconstructionDataFormats/Track.h> | ||
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| #include <TPDGCode.h> | ||
| #include <TProfile.h> | ||
| #include <TRandom3.h> | ||
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| #include <string> | ||
| #include <vector> | ||
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| using namespace o2; | ||
| using namespace o2::framework; | ||
| using namespace o2::framework::expressions; | ||
| using LorentzVectorM = ROOT::Math::LorentzVector<ROOT::Math::PxPyPzM4D<double>>; | ||
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| #define O2_DEFINE_CONFIGURABLE(NAME, TYPE, DEFAULT, HELP) Configurable<TYPE> NAME{#NAME, DEFAULT, HELP}; | ||
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| struct FlowMcUpc { | ||
| HistogramRegistry histos{"Histos", {}, OutputObjHandlingPolicy::AnalysisObject}; | ||
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| Configurable<float> minB{"minB", 0.0f, "min impact parameter"}; | ||
| Configurable<float> maxB{"maxB", 20.0f, "max impact parameter"}; | ||
| O2_DEFINE_CONFIGURABLE(cfgCutVertex, float, 10.0f, "Accepted z-vertex range") | ||
| O2_DEFINE_CONFIGURABLE(cfgCutEta, float, 0.8f, "Eta range for tracks") | ||
| O2_DEFINE_CONFIGURABLE(cfgPtCutMin, float, 0.1f, "Minimal pT for tracks") | ||
| O2_DEFINE_CONFIGURABLE(cfgPtCutMax, float, 1000.0f, "Maximal pT for tracks") | ||
| O2_DEFINE_CONFIGURABLE(cfgCutDCAxy, float, 0.2f, "DCAxy cut for tracks") | ||
| O2_DEFINE_CONFIGURABLE(cfgDcaxy, bool, true, "choose dcaxy") | ||
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| ConfigurableAxis axisB{"axisB", {100, 0.0f, 20.0f}, ""}; | ||
| ConfigurableAxis axisPt{"axisPt", {VARIABLE_WIDTH, 0.0f, 0.1f, 0.2f, 0.3f, 0.4f, 0.5f, 0.6f, 0.7f, 0.8f, 0.9f, 1.0f, 1.1f, 1.2f, 1.3f, 1.4f, 1.5f, 1.6f, 1.7f, 1.8f, 1.9f, 2.0f, 2.2f, 2.4f, 2.6f, 2.8f, 3.0f, 3.2f, 3.4f, 3.6f, 3.8f, 4.0f, 4.4f, 4.8f, 5.2f, 5.6f, 6.0f, 6.5f, 7.0f, 7.5f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f}, "pt axis"}; | ||
| // Connect to ccdb | ||
| Service<ccdb::BasicCCDBManager> ccdb; | ||
| Configurable<std::string> ccdbUrl{"ccdbUrl", "http://alice-ccdb.cern.ch", "url of the ccdb repository"}; | ||
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| double epsilon = 1e-6; | ||
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| using McParticles = soa::Join<aod::UDMcParticles, aod::UDMcTrackLabels>; | ||
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| void init(InitContext&) | ||
| { | ||
| ccdb->setURL(ccdbUrl.value); | ||
| ccdb->setCaching(true); | ||
| auto now = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count(); | ||
| ccdb->setCreatedNotAfter(now); | ||
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| const AxisSpec axisVertex{20, -10, 10, "Vtxz (cm)"}; | ||
| const AxisSpec axisEta{20, -1., 1., "#eta"}; | ||
| const AxisSpec axisCounter{1, 0, +1, ""}; | ||
| // QA histograms | ||
| histos.add<TH1>("mcEventCounter", "Monte Carlo Truth EventCounter", HistType::kTH1F, {{5, 0, 5}}); | ||
| histos.add<TH1>("RecoProcessEventCounter", "Reconstruction EventCounter", HistType::kTH1F, {{5, 0, 5}}); | ||
| histos.add<TH1>("hImpactParameter", "hImpactParameter", HistType::kTH1D, {axisB}); | ||
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| histos.add<TH1>("hPtMCGen", "Monte Carlo Truth; pT (GeV/c);", {HistType::kTH1D, {axisPt}}); | ||
| histos.add<TH3>("hEtaPtVtxzMCGen", "Monte Carlo Truth; #eta; p_{T} (GeV/c); V_{z} (cm);", {HistType::kTH3D, {axisEta, axisPt, axisVertex}}); | ||
| histos.add<TH1>("hPtReco", "Monte Carlo Reco Global; pT (GeV/c);", {HistType::kTH1D, {axisPt}}); | ||
| histos.add<TH3>("hEtaPtVtxzMCReco", "Monte Carlo Global; #eta; p_{T} (GeV/c); V_{z} (cm);", {HistType::kTH3D, {axisEta, axisPt, axisVertex}}); | ||
| } | ||
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| // template <typename TCollision> | ||
| // bool eventSelected(TCollision collision) | ||
| // { | ||
| // return true; | ||
| // } | ||
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| template <typename TTrack> | ||
| bool trackSelected(TTrack const& track) | ||
| { | ||
| // auto momentum = std::array<double, 3>{track.px(), track.py(), track.pz()}; | ||
| double pt = track.pt(); | ||
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Contributor
Author
There was a problem hiding this comment. Will it be fine if I use auto type here? |
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| if (pt < cfgPtCutMin || pt > cfgPtCutMax) { | ||
| return false; | ||
| } | ||
| double dcaLimit = 0.0105 + 0.035 / std::pow(pt, 1.1); | ||
| if (cfgDcaxy && !(std::fabs(track.dcaXY()) < dcaLimit)) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
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| void processMCTrue(aod::UDMcCollisions::iterator const& mcCollision, McParticles const& mcParticles, aod::BCs const& bcs) | ||
| { | ||
| if (bcs.size() == 0) { | ||
| return; | ||
| } | ||
| histos.fill(HIST("mcEventCounter"), 0.5); | ||
| float imp = mcCollision.impactParameter(); | ||
| float vtxz = mcCollision.posZ(); | ||
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| if (imp >= minB && imp <= maxB) { | ||
| // event within range | ||
| histos.fill(HIST("hImpactParameter"), imp); | ||
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| for (auto const& mcParticle : mcParticles) { | ||
| // auto momentum = std::array<double, 3>{mcParticle.px(), mcParticle.py(), mcParticle.pz()}; | ||
| LorentzVectorM pMC(mcParticle.px(), mcParticle.py(), mcParticle.pz(), 0); // double phi = RecoDecay::phi(momentum); // focus on bulk: e, mu, pi, k, p | ||
| int pdgCode = std::abs(mcParticle.pdgCode()); | ||
| if (pdgCode == PDG_t::kElectron) | ||
| pMC.SetM(o2::constants::physics::MassElectron); | ||
| else if (pdgCode == PDG_t::kMuonMinus) | ||
| pMC.SetM(o2::constants::physics::MassMuon); | ||
| else if (pdgCode == PDG_t::kPiPlus) | ||
| pMC.SetM(o2::constants::physics::MassPionCharged); | ||
| else if (pdgCode == PDG_t::kKPlus) | ||
| pMC.SetM(o2::constants::physics::MassKaonCharged); | ||
| else if (pdgCode == PDG_t::kProton) | ||
| pMC.SetM(o2::constants::physics::MassProton); | ||
| else | ||
| continue; | ||
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| double pt = pMC.Pt(); | ||
| double eta = pMC.Eta(); | ||
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Collaborator
There was a problem hiding this comment. All this is completely useless. Transverse momentum and pseudorapidity do not depend on the mass.
Contributor
Author
There was a problem hiding this comment. Hi, you suggested to use the mcparticle.eta(), but it seems that it is not included the table. So I used these codes taking reference from other ud task. |
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| // if (pdgCode != PDG_t::kElectron && pdgCode != PDG_t::kMuonMinus && pdgCode != PDG_t::kPiPlus && pdgCode != PDG_t::kKPlus && pdgCode != PDG_t::kProton) | ||
| // continue; | ||
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| if (!mcParticle.isPhysicalPrimary()) | ||
| continue; | ||
| // if (std::fabs(mcParticle.eta()) > cfgCutEta) // main acceptance | ||
| // continue; | ||
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| histos.fill(HIST("hPtMCGen"), pt); | ||
| histos.fill(HIST("hEtaPtVtxzMCGen"), eta, pt, vtxz); | ||
| } | ||
| } | ||
| } | ||
| PROCESS_SWITCH(FlowMcUpc, processMCTrue, "process pure simulation information", true); | ||
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| using MCRecoTracks = soa::Join<aod::UDTracks, aod::UDTracksPID, aod::UDTracksExtra, aod::UDTracksFlags, aod::UDTracksDCA, aod::UDMcTrackLabels>; | ||
| using MCRecoCollisions = soa::Join<aod::UDCollisions, aod::SGCollisions, aod::UDCollisionSelExtras, aod::UDCollisionsSels, aod::UDZdcsReduced, aod::UDMcCollsLabels>; | ||
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| void processReco(MCRecoCollisions::iterator const& collision, MCRecoTracks const& tracks) | ||
| { | ||
| histos.fill(HIST("RecoProcessEventCounter"), 0.5); | ||
| // if (!eventSelected(collision)) | ||
| // return; | ||
| histos.fill(HIST("RecoProcessEventCounter"), 1.5); | ||
| if (!collision.has_udMcCollision()) | ||
| return; | ||
| histos.fill(HIST("RecoProcessEventCounter"), 2.5); | ||
| if (tracks.size() < 1) | ||
| return; | ||
| histos.fill(HIST("RecoProcessEventCounter"), 3.5); | ||
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| float vtxz = collision.posZ(); | ||
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| for (const auto& track : tracks) { | ||
| LorentzVectorM recoMC(track.px(), track.py(), track.pz(), 0); | ||
| // double phi = RecoDecay::phi(momentum); | ||
| // focus on bulk: e, mu, pi, k, p | ||
| // auto momentum = std::array<double, 3>{track.px(), track.py(), track.pz()}; | ||
| // double pt = track.pt(); | ||
| // double phi = RecoDecay::phi(momentum); | ||
| // double eta = track.eta(); | ||
| if (!trackSelected(track) || (!track.has_udMcParticle())) | ||
| continue; | ||
| auto mcParticle = track.udMcParticle(); | ||
| int pdgCode = std::abs(mcParticle.pdgCode()); | ||
| if (pdgCode == PDG_t::kElectron) | ||
| recoMC.SetM(o2::constants::physics::MassElectron); | ||
| else if (pdgCode == PDG_t::kMuonMinus) | ||
| recoMC.SetM(o2::constants::physics::MassMuon); | ||
| else if (pdgCode == PDG_t::kPiPlus) | ||
| recoMC.SetM(o2::constants::physics::MassPionCharged); | ||
| else if (pdgCode == PDG_t::kKPlus) | ||
| recoMC.SetM(o2::constants::physics::MassKaonCharged); | ||
| else if (pdgCode == PDG_t::kProton) | ||
| recoMC.SetM(o2::constants::physics::MassProton); | ||
| else | ||
| continue; | ||
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| double pt = recoMC.Pt(); | ||
| double eta = recoMC.Eta(); | ||
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| // if (pdgCode != PDG_t::kElectron && pdgCode != PDG_t::kMuonMinus && pdgCode != PDG_t::kPiPlus && pdgCode != PDG_t::kKPlus && pdgCode != PDG_t::kProton) | ||
| // continue; | ||
| // if (std::fabs(mcParticle.eta()) > cfgCutEta) // main acceptance | ||
| // continue; | ||
| if (!mcParticle.isPhysicalPrimary()) | ||
| continue; | ||
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| histos.fill(HIST("hPtReco"), pt); | ||
| histos.fill(HIST("hEtaPtVtxzMCReco"), eta, pt, vtxz); | ||
| } | ||
| } | ||
| PROCESS_SWITCH(FlowMcUpc, processReco, "process reconstructed information", true); | ||
| }; | ||
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| WorkflowSpec defineDataProcessing(ConfigContext const& cfgc) | ||
| { | ||
| return WorkflowSpec{ | ||
| adaptAnalysisTask<FlowMcUpc>(cfgc)}; | ||
| } | ||
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This is very misleading.
McParticlesis a table in the central data model.