{"paper":{"title":"Exclusive rare $B_s\\to (K,\\eta,\\eta')\\ell^+\\ell^-$ decays in the light-front quark model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Ho-Meoyng Choi (Kyungpook National University)","submitted_at":"2010-02-03T12:40:34Z","abstract_excerpt":"Using the light-front quark model, we calculate the transition form factors, decay rates, and longitudinal lepton polarization asymmetries for the exclusive rare $B_s\\to (K,\\eta^{(\\prime)})(\\ell^+\\ell^-,\\nu_{\\ell}\\bar{\\nu_{\\ell}}$ ($\\ell=e,\\mu,\\tau$) decays within the standard model, taking into account the $\\eta-\\eta'$ mixing angle. For the mixing angle $\\theta=-20^{\\circ}$ ($-10^{\\circ}$) in the octet-singlet basis, we obtain ${\\rm BR}(B_s\\to \\eta\\sum\\nu_{\\ell}\\bar{\\nu}_{\\ell})=1.1 (1.7)\\times 10^{-6}$, ${\\rm BR}(B_s\\to \\eta\\mu^+\\mu^-)=1.5 (2.4)\\times 10^{-7}$, ${\\rm BR}(B_s\\to \\eta\\tau^+\\ta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.0721","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":""},"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"}