{"paper":{"title":"Remark on the Theoretical Uncertainty in B^0-\\bar{B}^0 Mixing","license":"","headline":"","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"Andreas S. Kronfeld, Sinead M. Ryan","submitted_at":"2002-06-05T20:45:41Z","abstract_excerpt":"We re-examine the theoretical uncertainty in the Standard Model expression for $B^0$-$\\bar{B}^0$ mixing. We focus on lattice calculations of the ratio $\\xi$, needed to relate the oscillation frequency of $B^0_s$-$\\bar{B}^0_s$ mixing to the poorly known CKM element $V_{td}$. We replace the usual linear chiral extrapolation with one that includes the logarithm that appears in chiral perturbation theory. We find a significant shift in the ratio $\\xi$, from the conventional $1.15\\pm0.05$ to $\\xi=1.32\\pm0.10$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0206058","kind":"arxiv","version":2},"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"}