{"paper":{"title":"Searching for New Physics in the b->d FCNC using B_s^0(t)->\\phi K_s and B_d^0(t)->K^0\\bar{K}^0","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"C.S. Kim (Yonsei Univ.), D. London (Univ. de Montreal), T. Yoshikawa (KEK)","submitted_at":"1999-04-13T04:15:48Z","abstract_excerpt":"Time-dependent measurements of the decays B_s^0(t)-->\\phi K_s and B_d^0(t) --> K^0 \\bar{K}^0 can be used to compare the weak phases of B_d^0-\\bar{B}_d^0 mixing and the t-quark contribution to the b->d penguin. Since these two phases are equal in the standard model, any discrepancy would be a sign of new physics, specifically in the b->d flavour-changing neutral current (FCNC). The method can be applied to other pairs of decays, such as B_s^0(t)--> J/\\Psi K_s and B_d^0(t)--> J/\\Psi \\pi^0."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9904311","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"}