{"paper":{"title":"B_s \\to \\ell^+ \\ell^- in a model II 2HDM and MSSM","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Chao-Shang Huang, Liao Wei, Qi-Shu Yan, Shou-hua Zhu","submitted_at":"2000-06-21T16:56:44Z","abstract_excerpt":"In this paper we analyze the process $B_s \\to \\ell^+ \\ell^-$ in a model II 2HDM and MSSM. All the leading terms of Wilson coefficients relevant to the process are given in the large tan$\\beta$ limit. It is shown that the decay width for $B_s \\to \\ell^+ \\ell^-$ depends on all parameters except $m_{A^0}$ in the 2HDM. The branching ratio of $B_s \\to \\mu^+ \\mu^-$ can reach its experimental bound in some large tan$\\beta$ regions of the parameter space in MSSM because the amplitude increases like tan$^3\\beta$ in the regions. For l=$\\tau$, the branching ratio can even reach $10^{-4}$ in the regions. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0006250","kind":"arxiv","version":3},"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"}