{"paper":{"title":"New results on the search for $B^0_s\\rightarrow \\mu^+\\mu^-$ from LHCb","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-ex","authors_text":"Johannes Albrecht","submitted_at":"2013-02-06T10:47:19Z","abstract_excerpt":"A search for the rare decays $B^0_s\\rightarrow \\mu^+\\mu^-$ and $B^0\\rightarrow \\mu^+\\mu^-$ is performed with the LHCb experiment using 1.1\\,fb$^{-1}$ of data collected at $\\sqrt s=8$\\,TeV$ and 1.0\\,fb$^{-1}$ of data collected at $\\sqrt s=7$\\,TeV. An excess of $B^0_s\\rightarrow \\mu^+\\mu^-$ candidates with respect to the background expectations is observed with a statistical significance of 3.5 standard deviations. A branching fraction of ${\\cal BR}(B^0_s\\rightarrow \\mu^+\\mu^-) =(3.2^{+1.5}_{-1.2}) \\times 10^{-9}$ is measured with an unbinned maximum likelihood fit. The measured branching fracti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1317","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"}