{"paper":{"title":"The FSI contribution to the observed $B_s$ decays into $K^+K^-$ and $\\pi^+K^-$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Hong-Wei Ke, Xiang Liu, Xue-Qian Li, Xu-Hao Yuan","submitted_at":"2012-10-13T08:23:08Z","abstract_excerpt":"Because at the tree level $B_s\\rightarrow K^+K^-$ is Cabibbo-triple suppressed, so its branching ratio should be smaller than that of $B_s\\to \\pi^+ K^-$. The measurements present a reversed ratio as $R=\\mathcal B(B_s\\rightarrow \\pi^+K^-)/\\mathcal B(B_s\\rightarrow K^+ K^-)\\sim{4.9/33}$. Therefore, It has been suggested that the transition $B_s\\to K^+K^-$ is dominated by the penguin mechanism, which is proportional to $V_{cb}V^*_{cs}$. In this work, we show that an extra contribution from the final state interaction (FSI) to $B_s\\to K^+K^-$ via sequential processes $B_s\\to D^{(*)}_{(s)} \\bar D_s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.3686","kind":"arxiv","version":4},"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"}