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We also obtain the related quantities f_{Bs}sqrt(B{Bs})=237(18)(8) MeV, f_{Bd}= 174(22)(+7-0)(-4-0) MeV, f_{Bs}= 204(15)(+7-0)(+3-0) MeV, f_{Bs}/f_{Bd}=1.17(4)(+0-1), f_{Bd}/f_{Ds}=0.74(5). After combining our results with the experimental world average (Delta m_d), we predict (Delta m_s)=15.8(2.1)(3.3) ps^{-1}. We have also computed the relevant parameters for mixing of n"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"hep-lat/0002025","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-lat","submitted_at":"2000-02-21T15:57:15Z","cross_cats_sorted":["hep-ex","hep-ph"],"title_canon_sha256":"8c211743bf929a8186ff4346c60b0d5f9e3c6d6f56a141acb775d72d5288eaae","abstract_canon_sha256":"ef734bfce7044940bae041e8012093b6a89b38a2ee7ba7f151e237539742245d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:19:53.030893Z","signature_b64":"fZGTGP04LCqgMnbLIcqyJNYqgILwfeziWtYqbQ1ErmvpEPqlckrQVkKsqUgqrpdsDD1RkNL8R5IJlkOpa+rjAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77745b7a54a8a6e5b67b7e681ae19a9505ff8824397744565dcc9a5053c31592","last_reissued_at":"2026-07-04T16:19:53.030466Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:19:53.030466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Mixing of B mesons and Decay Constants with the Non-Perturbatively Improved Action","license":"","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"hep-lat","authors_text":"A.Retico, D.Becirevic, D.Meloni, G.Martinelli, L.Giusti, V.Gimenez, V.Lubicz","submitted_at":"2000-02-21T15:57:15Z","abstract_excerpt":"Several quantities relevant to phenomenological studies of the mixing of neutral B mesons are computed on the lattice. 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