{"paper":{"title":"${\\bf B_s\\to K^{(*)} \\ell\\bar \\nu}$, Angular Analysis, S-wave Contributions and ${\\bf |V_{ub}|}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Ulf-G. Mei{\\ss}ner, Wei Wang","submitted_at":"2013-11-21T14:34:02Z","abstract_excerpt":"We analyse the $\\overline B_s^0\\to K^+l^-\\bar \\nu$ and $\\overline B_s^0\\to K^{*+}(\\to K\\pi)\n  \\ell^-\\bar \\nu$ decays that are valuable for extracting the CKM matrix element $|V_{ub}|$. We calculate the differential and integrated partial widths in units of $|V_{ub}|^2$ based on various calculations of hadronic form factors and in particular the latest Lattice QCD calculation of the $B_s\\to K^*$ form factors. For the decay $\\overline B_s^0 \\to K\\pi \\ell\\bar \\nu$, we formulate the general angular distributions with the inclusion of the various partial-wave $K\\pi$ contributions. Using the results"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5420","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"}