{"paper":{"title":"Measurement of the $\\Lambda$ hyperon lifetime","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"nucl-ex","authors_text":"ALICE Collaboration","submitted_at":"2023-03-01T15:58:40Z","abstract_excerpt":"A new, more precise measurement of the $\\Lambda$ hyperon lifetime is performed using a large data sample of Pb$-$Pb collisions at $\\sqrt{s_{\\rm NN}} = 5.02$ TeV with ALICE. The $\\Lambda$ and $\\overline{\\Lambda}$ hyperons are reconstructed at midrapidity using their two-body weak decay channel $\\Lambda \\rightarrow \\mathrm{p} + \\pi^{-}$ and $\\overline{\\Lambda} \\rightarrow \\overline{\\mathrm{p}} + \\pi^{+}$. The measured value of the $\\Lambda$ lifetime is $\\tau_{\\Lambda} = [261.07 \\pm 0.37 \\ ( \\rm stat.) \\pm 0.72 \\ (\\rm syst.) ]\\ \\rm ps$. The relative difference between the lifetime of $\\Lambda$ an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.00606","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2303.00606/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}