{"paper":{"title":"Fragmentation fractions of two-body b-baryon decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"C.Q. Geng, L.W. Luo, P.Y. Lin, Y.K. Hsiao","submitted_at":"2015-10-07T03:14:44Z","abstract_excerpt":"We study the fragmentation fractions $(f_{{\\bf B}_b})$ of the $b$-quark to b-baryons (${\\bf B}_b$). By the assumption of $f_{\\Lambda_b}/(f_u+f_d)=0.25\\pm 0.15$ in accordance with the measurements by LEP, CDF and LHCb Collaborations, we estimate that $f_{\\Lambda_b}=0.175\\pm 0.106$ and $f_{\\Xi_b^{-,0}}=0.019\\pm 0.013$. From these fragmentation fractions, we derive ${\\cal B}(\\Lambda_b\\to J/\\psi \\Lambda)=(3.3\\pm 2.1)\\times 10^{-4}$, ${\\cal B}(\\Xi_b^-\\to J/\\psi \\Xi^-)=(5.3\\pm 3.9)\\times 10^{-4}$ and ${\\cal B}(\\Omega_b^-\\to J/\\psi \\Omega^-)>1.9\\times 10^{-5}$. The predictions of ${\\cal B}(\\Lambda_b\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01808","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"}