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PWGLF: Extra dev of derived V0 analysis (AliceO2Group#4324)
* PWGLF: extra dev of derived V0 analysis * Add task * Please consider the following formatting changes (#218) --------- Co-authored-by: ALICE Builder <[email protected]>
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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. | ||
| // | ||
| // Example V0 analysis task | ||
| // ======================== | ||
| // | ||
| // This code loops over a V0Data table and produces some | ||
| // standard analysis output. It is meant to be run over | ||
| // derived data. | ||
| // | ||
| // Comments, questions, complaints, suggestions? | ||
| // Please write to: | ||
| // [email protected] | ||
| // | ||
| #include "Framework/runDataProcessing.h" | ||
| #include "Framework/AnalysisTask.h" | ||
| #include "Framework/AnalysisDataModel.h" | ||
| #include "Framework/ASoAHelpers.h" | ||
| #include "ReconstructionDataFormats/Track.h" | ||
| #include "CommonConstants/PhysicsConstants.h" | ||
| #include "Common/Core/trackUtilities.h" | ||
| #include "PWGLF/DataModel/LFStrangenessTables.h" | ||
| #include "PWGLF/DataModel/LFStrangenessPIDTables.h" | ||
| #include "Common/Core/TrackSelection.h" | ||
| #include "Common/DataModel/TrackSelectionTables.h" | ||
| #include "Common/DataModel/EventSelection.h" | ||
| #include "Common/DataModel/Centrality.h" | ||
| #include "Common/DataModel/PIDResponse.h" | ||
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| #include <TFile.h> | ||
| #include <TH2F.h> | ||
| #include <TProfile.h> | ||
| #include <TLorentzVector.h> | ||
| #include <Math/Vector4D.h> | ||
| #include <TPDGCode.h> | ||
| #include <TDatabasePDG.h> | ||
| #include <cmath> | ||
| #include <array> | ||
| #include <cstdlib> | ||
| #include "Framework/ASoAHelpers.h" | ||
|
|
||
| using namespace o2; | ||
| using namespace o2::framework; | ||
| using namespace o2::framework::expressions; | ||
| using std::array; | ||
|
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| using dauTracks = soa::Join<aod::DauTrackExtras, aod::DauTrackTPCPIDs>; | ||
|
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| struct derivedlambdakzeroanalysis { | ||
|
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| HistogramRegistry histos{"Histos", {}, OutputObjHandlingPolicy::AnalysisObject}; | ||
|
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| // Selection criteria: acceptance | ||
| Configurable<float> rapidityCut{"rapidityCut", 0.5, "rapidity"}; | ||
| Configurable<float> daughterEtaCut{"daughterEtaCut", 0.8, "max eta for daughters"}; | ||
|
|
||
| // Standard 5 topological criteria | ||
| Configurable<double> v0cospa{"v0cospa", 0.995, "min V0 CosPA"}; // double -> N.B. dcos(x)/dx = 0 at x=0) | ||
| Configurable<float> dcav0dau{"dcav0dau", 1.0, "max DCA V0 Daughters (cm)"}; | ||
| Configurable<float> dcanegtopv{"dcanegtopv", .1, "min DCA Neg To PV (cm)"}; | ||
| Configurable<float> dcapostopv{"dcapostopv", .1, "min DCA Pos To PV (cm)"}; | ||
| Configurable<float> v0radius{"v0radius", 5.0, "minimum V0 radius (cm)"}; | ||
|
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| // PID (TPC) | ||
| Configurable<float> TpcPidNsigmaCut{"TpcPidNsigmaCut", 5, "TpcPidNsigmaCut"}; | ||
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| Configurable<bool> doQA{"doQA", true, "do topological variable QA histograms"}; | ||
| Configurable<float> massWindowQA{"massWindowQA", 0.005f, "mass window for QA plots"}; | ||
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| static constexpr float defaultLifetimeCuts[1][2] = {{30., 20.}}; | ||
| Configurable<LabeledArray<float>> lifetimecut{"lifetimecut", {defaultLifetimeCuts[0], 2, {"lifetimecutLambda", "lifetimecutK0S"}}, "lifetimecut"}; | ||
|
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| 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, 13.0f, 14.0f, 15.0f, 17.0f, 19.0f, 21.0f, 23.0f, 25.0f, 30.0f, 35.0f, 40.0f, 50.0f}, "pt axis for QA histograms"}; | ||
| ConfigurableAxis axisK0Mass{"axisK0Mass", {200, 0.4f, 0.6f}, ""}; | ||
| ConfigurableAxis axisLambdaMass{"axisLambdaMass", {200, 1.101f, 1.131f}, ""}; | ||
| ConfigurableAxis axisCentrality{"axisCentrality", {100, 0.0f, 100.0f}, ""}; | ||
|
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| // topological variable QA axes | ||
| ConfigurableAxis axisDCAtoPV{"axisDCAtoPV", {100, -0.5f, 0.5f}, "DCA (cm)"}; | ||
| ConfigurableAxis axisDCAdau{"axisDCAdau", {200, 0.0f, 2.0f}, "DCA (cm)"}; | ||
| ConfigurableAxis axisPointingAngle{"axisPointingAngle", {200, 0.0f, 2.0f}, "pointing angle (rad)"}; | ||
| ConfigurableAxis axisV0Radius{"axisV0Radius", {200, 0.0f, 60.0f}, "V0 2D radius (cm)"}; | ||
|
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| enum species { spK0Short = 0, | ||
| spLambda, | ||
| spAntiLambda }; | ||
|
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| void init(InitContext const&) | ||
| { | ||
| // Event Counters | ||
| histos.add("hEventSelection", "hEventSelection", kTH1F, {{2, -0.5f, +2.5f}}); | ||
| histos.get<TH1>(HIST("hEventSelection"))->GetXaxis()->SetBinLabel(1, "All collisions"); | ||
| histos.get<TH1>(HIST("hEventSelection"))->GetXaxis()->SetBinLabel(2, "sel8 cut"); | ||
| histos.get<TH1>(HIST("hEventSelection"))->GetXaxis()->SetBinLabel(3, "posZ cut"); | ||
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| histos.add("hEventCentrality", "hEventCentrality", kTH1F, {{100, 0.0f, +100.0f}}); | ||
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| // histograms versus mass | ||
| histos.add("h3dMassK0Short", "h3dMassK0Short", kTH3F, {axisCentrality, axisPt, axisK0Mass}); | ||
| histos.add("h3dMassLambda", "h3dMassLambda", kTH3F, {axisCentrality, axisPt, axisLambdaMass}); | ||
| histos.add("h3dMassAntiLambda", "h3dMassAntiLambda", kTH3F, {axisCentrality, axisPt, axisLambdaMass}); | ||
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| // QA histograms if requested | ||
| if (doQA) { | ||
| // initialize for K0short... | ||
| histos.add("K0Short/h3dPosDCAxy", "h3dPosDCAxy", kTH3F, {axisCentrality, axisPt, axisDCAtoPV}); | ||
| histos.add("K0Short/h3dNegDCAxy", "h3dNegDCAxy", kTH3F, {axisCentrality, axisPt, axisDCAtoPV}); | ||
| histos.add("K0Short/h3dDCADaughters", "h3dDCADaughters", kTH3F, {axisCentrality, axisPt, axisDCAdau}); | ||
| histos.add("K0Short/h3dPointingAngle", "h3dPointingAngle", kTH3F, {axisCentrality, axisPt, axisPointingAngle}); | ||
| histos.add("K0Short/h3dV0Radius", "h3dV0Radius", kTH3F, {axisCentrality, axisPt, axisV0Radius}); | ||
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| // ...clone for Lambda and AntiLambda | ||
| histos.addClone("K0Short/", "Lambda/"); | ||
| histos.addClone("K0Short/", "AntiLambda/"); | ||
| } | ||
| } | ||
|
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| template <typename TV0> | ||
| bool compatibleTPC(TV0 v0, int sp) | ||
| { | ||
| float pidPos = TMath::Abs(v0.template posTrackExtra_as<dauTracks>().tpcNSigmaPi()); | ||
| float pidNeg = TMath::Abs(v0.template negTrackExtra_as<dauTracks>().tpcNSigmaPi()); | ||
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| if (sp == spLambda) | ||
| pidPos = TMath::Abs(v0.template posTrackExtra_as<dauTracks>().tpcNSigmaPr()); | ||
| if (sp == spAntiLambda) | ||
| pidNeg = TMath::Abs(v0.template negTrackExtra_as<dauTracks>().tpcNSigmaPr()); | ||
|
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| if (pidPos < TpcPidNsigmaCut && pidNeg < TpcPidNsigmaCut) | ||
| return true; | ||
|
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| // if not, then not | ||
| return false; | ||
| } | ||
|
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| template <typename TV0> | ||
| void fillQAHistograms(TV0 v0, int sp, float centrality) | ||
| { | ||
| float massRef = o2::constants::physics::MassKaonNeutral; | ||
|
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| if (sp != spK0Short) | ||
| massRef = o2::constants::physics::MassLambda; | ||
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| if (std::abs(v0.mK0Short() - massRef) < massWindowQA && sp == spK0Short) { | ||
| histos.fill(HIST("K0Short/h3dPosDCAxy"), centrality, v0.pt(), v0.dcapostopv()); | ||
| histos.fill(HIST("K0Short/h3dNegDCAxy"), centrality, v0.pt(), v0.dcanegtopv()); | ||
| histos.fill(HIST("K0Short/h3dDCADaughters"), centrality, v0.pt(), v0.dcaV0daughters()); | ||
| histos.fill(HIST("K0Short/h3dPointingAngle"), centrality, v0.pt(), TMath::ACos(v0.v0cosPA())); | ||
| histos.fill(HIST("K0Short/h3dV0Radius"), centrality, v0.pt(), v0.v0radius()); | ||
| } | ||
| if (std::abs(v0.mLambda() - massRef) < massWindowQA && sp == spLambda) { | ||
| histos.fill(HIST("Lambda/h3dPosDCAxy"), centrality, v0.pt(), v0.dcapostopv()); | ||
| histos.fill(HIST("Lambda/h3dNegDCAxy"), centrality, v0.pt(), v0.dcanegtopv()); | ||
| histos.fill(HIST("Lambda/h3dDCADaughters"), centrality, v0.pt(), v0.dcaV0daughters()); | ||
| histos.fill(HIST("Lambda/h3dPointingAngle"), centrality, v0.pt(), TMath::ACos(v0.v0cosPA())); | ||
| histos.fill(HIST("Lambda/h3dV0Radius"), centrality, v0.pt(), v0.v0radius()); | ||
| } | ||
| if (std::abs(v0.mAntiLambda() - massRef) < massWindowQA && sp == spAntiLambda) { | ||
| histos.fill(HIST("AntiLambda/h3dPosDCAxy"), centrality, v0.pt(), v0.dcapostopv()); | ||
| histos.fill(HIST("AntiLambda/h3dNegDCAxy"), centrality, v0.pt(), v0.dcanegtopv()); | ||
| histos.fill(HIST("AntiLambda/h3dDCADaughters"), centrality, v0.pt(), v0.dcaV0daughters()); | ||
| histos.fill(HIST("AntiLambda/h3dPointingAngle"), centrality, v0.pt(), TMath::ACos(v0.v0cosPA())); | ||
| histos.fill(HIST("AntiLambda/h3dV0Radius"), centrality, v0.pt(), v0.v0radius()); | ||
| } | ||
| } | ||
|
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| Filter preFilterV0 = nabs(aod::v0data::dcapostopv) > dcapostopv&& nabs(aod::v0data::dcanegtopv) > dcanegtopv&& aod::v0data::dcaV0daughters<dcav0dau && aod::v0data::v0cosPA> v0cospa; | ||
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| void process(soa::Join<aod::StraCollisions, aod::StraCents, aod::StraEvSels>::iterator const& collision, soa::Filtered<soa::Join<aod::V0Cores, aod::V0Extras>> const& fullV0s, dauTracks const&) | ||
| { | ||
| histos.fill(HIST("hEventSelection"), 0.5 /* all collisions */); | ||
| if (!collision.sel8()) { | ||
| return; | ||
| } | ||
| histos.fill(HIST("hEventSelection"), 1.5 /* sel8 collisions */); | ||
|
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| if (std::abs(collision.posZ()) > 10.f) { | ||
| return; | ||
| } | ||
| histos.fill(HIST("hEventSelection"), 2.5 /* vertex-Z selected */); | ||
| histos.fill(HIST("hEventCentrality"), collision.centFT0C()); | ||
|
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| for (auto& v0 : fullV0s) { | ||
| if (std::abs(v0.negativeeta()) > daughterEtaCut || std::abs(v0.positiveeta()) > daughterEtaCut) | ||
| continue; // remove acceptance that's badly reproduced by MC | ||
|
|
||
| if (v0.v0radius() > v0radius) { | ||
| // ___________________________________ | ||
| // Analysis 1: Lambda | ||
| if (TMath::Abs(v0.yLambda()) < rapidityCut) { | ||
| if (v0.distovertotmom(collision.posX(), collision.posY(), collision.posZ()) * o2::constants::physics::MassLambda0 < lifetimecut->get("lifetimecutLambda")) { | ||
| // Lambda daughter PID | ||
| if (compatibleTPC(v0, spLambda)) { | ||
| histos.fill(HIST("h3dMassLambda"), collision.centFT0C(), v0.pt(), v0.mLambda()); | ||
| if (doQA) | ||
| fillQAHistograms(v0, spLambda, collision.centFT0C()); | ||
| } | ||
| // AntiLambda daughter PID | ||
| if (compatibleTPC(v0, spAntiLambda)) { | ||
| histos.fill(HIST("h3dMassAntiLambda"), collision.centFT0C(), v0.pt(), v0.mAntiLambda()); | ||
| if (doQA) | ||
| fillQAHistograms(v0, spAntiLambda, collision.centFT0C()); | ||
| } | ||
| } | ||
| } | ||
| // ___________________________________ | ||
| // Analysis 2: K0Short | ||
| if (TMath::Abs(v0.yK0Short()) < rapidityCut) { | ||
| if (v0.distovertotmom(collision.posX(), collision.posY(), collision.posZ()) * o2::constants::physics::MassK0Short < lifetimecut->get("lifetimecutK0S")) { | ||
| if (compatibleTPC(v0, spK0Short)) { | ||
| histos.fill(HIST("h3dMassK0Short"), collision.centFT0C(), v0.pt(), v0.mK0Short()); | ||
| if (doQA) | ||
| fillQAHistograms(v0, spK0Short, collision.centFT0C()); | ||
| } | ||
| } | ||
| } | ||
| } // end radius check | ||
| } | ||
| } | ||
| }; | ||
|
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| WorkflowSpec defineDataProcessing(ConfigContext const& cfgc) | ||
| { | ||
| return WorkflowSpec{ | ||
| adaptAnalysisTask<derivedlambdakzeroanalysis>(cfgc)}; | ||
| } |
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