{"paper":{"title":"Measurement of hyper triton lifetime in Au + Au collisions at the Relativistic Heavy-Ion Collider","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"The STAR Collaboration","submitted_at":"2017-10-01T23:37:40Z","abstract_excerpt":"A precise measurement of the hypertriton lifetime is presented. In this letter, the mesonic decay modes $\\mathrm{{^3_\\Lambda}H \\rightarrow ^3He + \\pi^-}$ and $\\mathrm{{^3_\\Lambda}H \\rightarrow d + p + \\pi^-}$ are used to reconstruct the hypertriton from Au+Au collision data collected by the STAR collaboration at RHIC. A minimum $\\chi^2$ estimation is used to determine the lifetime of $\\tau = 142^{+24}_{-21}\\,{\\rm (stat.)} {\\pm} 31\\,{\\rm (syst.)}$ ps. This lifetime is about 50\\% shorter than the lifetime $\\tau = 263\\pm2$ ps of a free $\\Lambda$, indicating strong hyperon-nucleon interaction in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.00436","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}