{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:YB4WRIG6EOICIEMM7FZ37HDS5E","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":"8f1c00e3d692eb809fee56432c7f59ed2362c6575848298b807ffd9fd982959d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-09-30T01:34:43Z","title_canon_sha256":"98a36558dc1833cfe98836e32881427bc9faff8cf4a5d62072244e926c36b83f"},"schema_version":"1.0","source":{"id":"0909.5474","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.5474","created_at":"2026-07-04T17:25:50Z"},{"alias_kind":"arxiv_version","alias_value":"0909.5474v2","created_at":"2026-07-04T17:25:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.5474","created_at":"2026-07-04T17:25:50Z"},{"alias_kind":"pith_short_12","alias_value":"YB4WRIG6EOIC","created_at":"2026-07-04T17:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"YB4WRIG6EOICIEMM","created_at":"2026-07-04T17:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"YB4WRIG6","created_at":"2026-07-04T17:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:b01d38269209f2e6152968121d2dab608938e937d60bde785a50f3657dba91ca","target":"graph","created_at":"2026-07-04T17:25:50Z","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/0909.5474/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report evidence for the ground state of bottomonium, eta_b(1S), in the radiative decay Upsilon(3S) --> gamma eta_b in e^+e^- annihilation data taken with the CLEO III detector. Using 6 million Upsilon(3S) decays, and assuming Gamma(eta_b) = 10 MeV/c^2, we obtain B(Upsilon(3S) --> gamma eta_b) = (7.1 +- 1.8 +- 1.1) X 10^{-4}, where the first error is statistical and the second is systematic. The statistical significance is about 4 sigma. The mass is determined to be M(eta_b) = 9391.8 +- 6.6 +- 2.0 MeV/c^2, which corresponds to the hyperfine splitting Delta M_{hf}(1S)_b = 68.5 +- 6.6 +- 2.0 M","authors_text":"A. J. Sadoff, A. Lincoln, A. N. Robichaud, A. Powell, A. Ryd, A. Tomaradze, B. J. Y. Tan, B. K. Heltsley, B. Moziak, B. Xin, C. M. Tarbert, C. S. Park, C. Thomas, D. Besson, D. Cinabro, D. Cronin-Hennessy, D. G. Cassel, D. H. Miller, D. Hu, D. L. Hartill, D. L. Kreinick, D. M. Asner, D. Peterson, D. Riley, E. H. Thorndike, E. J. White, F. Yang, G. S. Adams, G. Tatishvili, G. Wilkinson, H. Mahlke-Kr\\\"uger, H. Mendez, H. Muramatsu, H. Vogel, I. P. J. Shipsey, J. C. Wang, J. Hietala, J. Insler, J. Ledoux, J. Libby, J. L. Rosner, J. M. Hunt, J. Napolitano, J. P. Alexander, J. Rademacker, J. Reed, J. R. Patterson, J. Wiss, J. Xavier, J. Yelton, J. Y. Ge, J. Zhu, K. K. Seth, K. M. Ecklund, K. Randrianarivony, K. W. Edwards, K. Y. Gao, L. Fields, L. Gibbons, L. Martin, L. M. Zhang, M. Artuso, M. J. Smith, M. Kornicer, M. R. Shepherd, M. Selen, N. Lowrey, P. Naik, P. Rubin, P. Spradlin, P. U. E. Onyisi, P. Zhou, P. Zweber, R. A. Briere, R. Ehrlich, R. E. Mitchell, R. Mountain, R. Poling, R. S. Galik, S. Blusk, S. Brisbane, S. Dobbs, S. Khalil, S. Mehrabyan, S. Stroiney, S. W. Gray, The CLEO Collaboration: G. Bonvicini, T. K. Pedlar, T. Skwarnicki, V. E. Kuznetsov, W. M. Sun, X. Shi, Z. Metreveli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-09-30T01:34:43Z","title":"Measurement of the eta_b(1S) mass and the branching fraction for Upsilon(3S) --> gamma eta_b(1S)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.5474","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":"sha256:2dfb32dccd9d6cfec219e07a6f0a3ea84b4189d39871e7c40cc29135ce62eb58","target":"record","created_at":"2026-07-04T17:25:50Z","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":"8f1c00e3d692eb809fee56432c7f59ed2362c6575848298b807ffd9fd982959d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-09-30T01:34:43Z","title_canon_sha256":"98a36558dc1833cfe98836e32881427bc9faff8cf4a5d62072244e926c36b83f"},"schema_version":"1.0","source":{"id":"0909.5474","kind":"arxiv","version":2}},"canonical_sha256":"c07968a0de239024118cf973bf9c72e90a72ae753977a1caf3451707c4a35e32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c07968a0de239024118cf973bf9c72e90a72ae753977a1caf3451707c4a35e32","first_computed_at":"2026-07-04T17:25:50.591480Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:25:50.591480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wxKvdVZOWKELyZCee+Av+XBNeiIR68UtEZBnSUJner5jOJ1ojgL+1LVtel269O048hST5kUCridNaWsFkdtODg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:25:50.591938Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.5474","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2dfb32dccd9d6cfec219e07a6f0a3ea84b4189d39871e7c40cc29135ce62eb58","sha256:b01d38269209f2e6152968121d2dab608938e937d60bde785a50f3657dba91ca"],"state_sha256":"636868fa808ea2ab8a8f2fd818caea2970d6e54eccc8e4da5cc3513786e42190"}