{"paper":{"title":"Implication of $\\sin 2\\beta$ from global fit and $B\\to J/\\psi K_S$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"CAS), Yue-Liang Wu, Yu-Feng Zhou (ITP","submitted_at":"2001-02-26T04:00:47Z","abstract_excerpt":"The measurement of $\\sin 2 \\beta$ is discussed within and beyond the standard model. In the presence of new physics, the angle $\\beta$ extracted from the global fit(denoted by $\\beta^{SM}_{fit}$) and the one extracted from $B\\to J/\\psi K_S$ (denoted by $\\beta_{J/\\psi}$) are in general all different from the 'true' angle $\\beta$ which is the weak phase of CKM matrix element $V^*_{td}$. Possible new physics effects on the ratio $R_{\\beta}=\\sin2\\beta_{J/\\psi}/\\sin 2\\beta^{SM}_{fit}$ is studied and parameterized in a most general form. It is shown that the ratio $R_{\\beta}$ may provide a useful to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0102310","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"}