{"paper":{"title":"Penguin Effects on K Pi and PiPi Decays of the $B$ Meson","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Masahisa Matsuda, Morimitsu Tanimoto, Takemi Hayashi","submitted_at":"1993-11-01T02:56:45Z","abstract_excerpt":"We give the detailed analyses for the gluonic-penguin effect on the $\\kp$ and $\\pp$ decays of the $B$ meson. In the standard model, it is shown that the ratio $BR(B\\A\\kp)/BR(B\\A\\pp)$ takes the value $0.5\\sim 3.0$ with the strongly depending on the CP violating phase $\\phi$ and the KM matrix element $|V_{ub}|$. We obtain the constraint on the form factor by using the experimental branching ratio. It is also found that, in the two-Higgs-doublet model, the charged Higgs contribution which could enhance the $B\\A X_s\\r$ decay does not a sizable effect on our processes. The effect of the final state"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9310380","kind":"arxiv","version":1},"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"}