{"paper":{"title":"Phenomenological Determination of the Beauty Meson Decay Parameter $f_B$ and the CP-Violating Angle $\\delta$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"J.Maalampi, M. Roos","submitted_at":"1994-08-24T09:10:58Z","abstract_excerpt":"We fit the ${\\cal CKM}$-matrix to all recent data with the following free parameters: three mixing angles, the CP-violating angle $\\delta$ in the Maiani parametrisation, the top quark mass $m_t$, and the product $f_B{\\cal B}_{\\B}^{1/2}$, where $f_B$ is the $B$-meson decay parameter and ${\\cal B}_{\\B}$ is the bag parameter. Our fits span a contiguous region in the $(f_B{\\cal B}_{\\B}^{1/2},\\ \\cos\\delta)$--plane, limited by $0.117\\lsim f_B{\\cal B}_{\\B}^{1/2}/{\\rm GeV}\\lsim 0.231$ and --0.95 $\\lsim$ $\\cos\\delta$ $\\lsim$ 0.70. The parameters $f_B{\\cal B}_{\\B}^{1/2}$ and $\\cos\\delta$ are strongly po"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9408358","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"}