{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:4FUJSLVQMBNOREXAT6PSV3O3WC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1b1d9fd394ae3896ff7077ccfded8d318560675b624eb63f0246b37ce83232a8","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-05-29T14:41:12Z","title_canon_sha256":"bc6ad6e363f85613206f2706eea9ca2e8b6569bf3cf7500e3c48e2fdf711bfdc"},"schema_version":"1.0","source":{"id":"hep-ph/0105306","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0105306","created_at":"2026-05-18T02:36:46Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0105306v2","created_at":"2026-05-18T02:36:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0105306","created_at":"2026-05-18T02:36:46Z"},{"alias_kind":"pith_short_12","alias_value":"4FUJSLVQMBNO","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"4FUJSLVQMBNOREXA","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"4FUJSLVQ","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:0ddd4d13c3037ad79571758291afef81aa4c082f9bc10220fa55791be112fcb0","target":"graph","created_at":"2026-05-18T02:36:46Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In this work, we update the constraints on tree level FCNC couplings in the framework of a theory with n isosinglet vector-like down quarks. In this context, we emphasize the sensitivity of the B -> J/psi K_S CP asymmetry to the presence of new vector-like down quarks. This CP asymmetry, together with the rare decays B -> X_{s,d} l bar{l} and K -> pi nu bar{nu} are the best options to further constrain the FCNC tree level couplings or even to point out, in the near future, the possible presence of vector-like quarks in the low energy spectrum, as suggested by GUT theories or models of large ex","authors_text":"Fermilab), F.J. Botella, G. Barenboim (CERN, Ific), O. Vives (U. Valencia","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2001-05-29T14:41:12Z","title":"Constraining models with vector-like fermions from FCNC in K and B physics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0105306","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e6ca30b82ececd5143fb189371b10f4abbbcb6f7fe732a2c3ae3dc7139b6d622","target":"record","created_at":"2026-05-18T02:36:46Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1b1d9fd394ae3896ff7077ccfded8d318560675b624eb63f0246b37ce83232a8","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-05-29T14:41:12Z","title_canon_sha256":"bc6ad6e363f85613206f2706eea9ca2e8b6569bf3cf7500e3c48e2fdf711bfdc"},"schema_version":"1.0","source":{"id":"hep-ph/0105306","kind":"arxiv","version":2}},"canonical_sha256":"e168992eb0605ae892e09f9f2aeddbb0a36b6cdd4386df135a4866edb80cb759","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e168992eb0605ae892e09f9f2aeddbb0a36b6cdd4386df135a4866edb80cb759","first_computed_at":"2026-05-18T02:36:46.987867Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:36:46.987867Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PLd2ZnF6SFWbsRPCufMEleobM3HDt/0hXZwlyZ5cl7lHb7hsdiFHSa255jOedP9wmtjDgFIzWcMbQFnPYnpmDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:36:46.988451Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0105306","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6ca30b82ececd5143fb189371b10f4abbbcb6f7fe732a2c3ae3dc7139b6d622","sha256:0ddd4d13c3037ad79571758291afef81aa4c082f9bc10220fa55791be112fcb0"],"state_sha256":"1bec3306a2524ae2e158f86572f2b9914677a66c2c2944e5d6d4feae84f28d8c"}