{"paper":{"title":"B_s->D_s/B->D Semileptonic Form-Factor Ratios and Their Application to BR(B^0_s->\\mu^+\\mu^-)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-lat","authors_text":"A. Bazavov, A.S. Kronfeld, A.X. El-Khadra, C. Bernard, C. DeTar, C.M. Bouchard, Daping Du, D. Toussaint, E.D. Freeland, E. Gamiz, E. Neil, J. Foley, J. Laiho, J.N. Simone, Jon A. Bailey, Jongjeong Kim, L. Levkova, M.B. Oktay, P.B. Mackenzie, Ran Zhou, R. Sugar, R.S. Van de Water, Si-Wei Qiu, Steven Gottlieb, U.M. Heller, Y. Meurice","submitted_at":"2012-02-28T20:21:28Z","abstract_excerpt":"We calculate form-factor ratios between the semileptonic decays \\bar{B}->D^+\\ell^-\\bar{\\nu} and \\bar{B}_s->D_s^+\\ell^-\\bar{\\nu} with lattice QCD. These ratios are a key theoretical input in a new strategy to determine the fragmentation fractions of the neutral B decays, which are needed for measurements of BR(B^0_s-> \\mu^+\\mu^-). We use the MILC ensembles of gauge configurations with 2+1 flavors of sea quarks at two lattice spacings of approximately 0.12 fm and 0.09 fm. We use the model-independent z-parametrization to extrapolate our simulation results at small recoil toward maximum recoil. O"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.6346","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"}