[PWGLF] Add a workflow for (anti)triton analysis#17151
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AnalitikGnid
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HorstMa,
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fmazzasc,
maciacco,
mpuccio,
omvazque and
skundu692
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July 21, 2026 12:47
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O2 linter results: ❌ 2 errors, |
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Error while checking build/O2Physics/staging for 3da74bd at 2026-07-21 14:55: Full log here. |
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Error while checking build/O2Physics/code-check for bc69f0c at 2026-07-21 16:49: Full log here. |
vkucera
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Jul 21, 2026
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Since you are adding a new file, make sure it's clean from errors and warnings.
| Configurable<float> maxTpcFractionSharedCls{"maxTpcFractionSharedCls", 0.4, "maximum fraction of TPC shared clasters"}; | ||
| Configurable<int> minItsNCls{"minItsNCls", 0, "minimum allowed number of ITS clasters for a track"}; | ||
| Configurable<float> itsChi2NCl{"itsChi2NCl", 100.0, "upper limit for chi2 value of a fit over ITS clasters for a track"}; | ||
| Configurable<int> particlePDG{"particlePDG", 1000010030, "PDG code of a particle to perform PID for (only pion, kaon, proton and deurton are supported now)"}; |
| Configurable<std::vector<float>> tofNSigma{"tofNSigma", std::vector<float>{-4.0f, 4.0f}, "Nsigma range in TOF"}; | ||
| Configurable<std::vector<float>> tpcNSigmaResidual{"tpcNSigmaResidual", std::vector<float>{-5.0f, 5.0f}, "residual TPC Nsigma cut to use with the TOF"}; | ||
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| Configurable<std::vector<int>> particlePDGtoReject{"particlePDGtoReject", std::vector<int>{2212}, "PDG codes of perticles that will be rejected with TPC"}; |
| std::pair<int, std::vector<float>> TPCcuts; | ||
| std::pair<int, std::vector<float>> TOFcuts; | ||
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| static constexpr float kMassTriton = 2.808921f; // GeV/c^2 |
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| template <typename TrackType> | ||
| static float getY(const TrackType& track, float mass) | ||
| { | ||
| const float pTr = track.p(); | ||
| const float pzTr = track.pz(); | ||
| const float ETr = std::sqrt(pTr * pTr + mass * mass); | ||
| return 0.5f * std::log((ETr + pzTr) / (ETr - pzTr)); | ||
| } |
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Don't reinvent the wheel. There are RecoDecay methods for this.
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Summary
Adds a new workflow for measuring (anti)triton production in Run 3 data
Dependencies
Uses output of the o2-analysis-cf-single-track-selector (https://aliceo2group.github.io/analysis-framework/docs/datamodel/pwgTables.html)
Links
Presented at the Nuclei and Exotica PAG meeting on Thursday, 16th July, 2026 (https://indico.cern.ch/event/1688019/)