{"paper":{"title":"Can the CP asymmetries in $B\\to \\psi K_S$ and $B\\to \\psi K_L$ differ?","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Alexander L. Kagan, Yuval Grossman, Zoltan Ligeti","submitted_at":"2002-04-18T07:45:57Z","abstract_excerpt":"In the standard model the CP asymmetries in $B\\to \\psi K_S$ and $B\\to \\psi K_L$ are equal in magnitude and opposite in sign to very good approximation. We compute the order $\\epsilon_K$ corrections to each of these CP asymmetries and find that they give a deviation from $\\sin 2\\beta$ at the half percent level, which may eventually be measurable. However, the correction to $a_{CP}(B\\to \\psi K_S)+a_{CP}(B\\to \\psi K_L)$ due to $\\epsilon_K$ is further suppressed. The dominant corrections to this sum, at the few times $10^{-3}$ level, come from the $B$ lifetime difference, and CP violation in $B- \\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0204212","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"}