{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:GALAVS6CUYN45JLLEEC7434R5B","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":"252602cf73e2dc2840ede9f886c98e6cc14d60d72dc378f09b7d45bb872a41a1","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2000-07-07T13:37:33Z","title_canon_sha256":"0b8a0799757fd88b2ad32b9b8a619aad9dbaf5db05f8b42f08e6ce572cf152a0"},"schema_version":"1.0","source":{"id":"hep-ex/0007012","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0007012","created_at":"2026-07-04T17:25:53Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0007012v1","created_at":"2026-07-04T17:25:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0007012","created_at":"2026-07-04T17:25:53Z"},{"alias_kind":"pith_short_12","alias_value":"GALAVS6CUYN4","created_at":"2026-07-04T17:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"GALAVS6CUYN45JLL","created_at":"2026-07-04T17:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"GALAVS6C","created_at":"2026-07-04T17:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:eb7500c8c57cbbdb0f6dc00a5cc3f8dfc65fd6930143be55d5b31962800b2632","target":"graph","created_at":"2026-07-04T17:25:53Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-ex/0007012/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In a sample of $9.66\\times 10^6 B\\bar{B}$ pairs collected with the CLEO detector we make the first observation of B decays to an $\\eta_c$ and a kaon. We measure branching fractions $BR(B^+\\to\\eta_c K^+) = (0.69 + 0.26 - 0.21 +- 0.08 +- 0.20)\\times 10^{-3}$ and $BR(B^0\\to\\eta_c K^0) = (1.09 + 0.55 - 0.42 +- 0.12 +- 0.31)\\times 10^{-3}$, where the first error is statistical, the second is systematic and the third is from the $\\eta_c$ branching fraction uncertainty. From these we extract the $\\eta_c$ decay constant in the factorization approximation, $f_{\\eta_c} = 335 +- 75$ MeV. We also search f","authors_text":"CLEO Collaboration, et al, K.W. Edwards","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"2000-07-07T13:37:33Z","title":"Study of B Decays to Charmonium States $B\\to \\eta_{c}K$ and $B\\to \\chi_{C0}K$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0007012","kind":"arxiv","version":1},"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:a47bd1015f31d98568503630682ef7517ca8a04fc4f68256b29356c0ec8bb554","target":"record","created_at":"2026-07-04T17:25:53Z","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":"252602cf73e2dc2840ede9f886c98e6cc14d60d72dc378f09b7d45bb872a41a1","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2000-07-07T13:37:33Z","title_canon_sha256":"0b8a0799757fd88b2ad32b9b8a619aad9dbaf5db05f8b42f08e6ce572cf152a0"},"schema_version":"1.0","source":{"id":"hep-ex/0007012","kind":"arxiv","version":1}},"canonical_sha256":"30160acbc2a61bcea56b2105fe6f91e866814640547de57448e9360619ce0fb7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30160acbc2a61bcea56b2105fe6f91e866814640547de57448e9360619ce0fb7","first_computed_at":"2026-07-04T17:25:53.598728Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:25:53.598728Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zbp0R/1p4UJl6B/8nLzT6WKsVXA4jJ0JfTT42W3O+LDYfZ2i9IngTAWiTmMQWJ183OTCEXLW0X7FdLSHpWMsBg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:25:53.599136Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/0007012","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a47bd1015f31d98568503630682ef7517ca8a04fc4f68256b29356c0ec8bb554","sha256:eb7500c8c57cbbdb0f6dc00a5cc3f8dfc65fd6930143be55d5b31962800b2632"],"state_sha256":"67e7637df3f5b8394738cda02b40ed1020ffe8c5d0d8f1de2c8c9b6724fde85d"}