{"paper":{"title":"Non-spectator Contributions To The Lifetime of $\\Lambda_{b}$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Chao-Hsi Chang, Guo-Li Wang, Peng Guo, Xue-Qian Li","submitted_at":"2003-04-15T01:31:30Z","abstract_excerpt":"In this work, we evaluate the contributions of non-spectator effects to the lifetimes of $\\Lambda_b$ and B-mesons. Based on the well-established models and within a reasonable range of the concerned parameters, the contributions can reduce the lifetime of $\\Lambda_b$ by $7 \\sim 8%$ compared to that of B-mesons which are not significantly affected. This might partly explain the measured ratio $\\tau(\\Lambda_{b})/\\tau(B^{0})=0.79 $ \\cite{Data}, which has been a long-standing discrepancy between theory and experimental data."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0304136","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"}