{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TXNLJFAWMMSCKZCWR5R5JGMBXU","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":"acc4c405b24248df7495ab6304c6429f2f1b09af44c64b8d14e229e38f49eeb7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2026-05-18T12:57:01Z","title_canon_sha256":"24935f9a0fbdd7c395e718b549a0a2b2f7a8c015458d790ab9208e54dc903fab"},"schema_version":"1.0","source":{"id":"2605.18344","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.18344","created_at":"2026-05-20T00:05:56Z"},{"alias_kind":"arxiv_version","alias_value":"2605.18344v1","created_at":"2026-05-20T00:05:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.18344","created_at":"2026-05-20T00:05:56Z"},{"alias_kind":"pith_short_12","alias_value":"TXNLJFAWMMSC","created_at":"2026-05-20T00:05:56Z"},{"alias_kind":"pith_short_16","alias_value":"TXNLJFAWMMSCKZCW","created_at":"2026-05-20T00:05:56Z"},{"alias_kind":"pith_short_8","alias_value":"TXNLJFAW","created_at":"2026-05-20T00:05:56Z"}],"graph_snapshots":[{"event_id":"sha256:c81191483b5111633778247d82dda9fb5311ea302b590e1fee84860ce74b0730","target":"graph","created_at":"2026-05-20T00:05:56Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"The half-life of the single beta decay of 96Zr is measured to be T_{1/2} = [2.27^{+0.53}_{-0.36}(stat) ± 0.27(syst)]×10^{20} yr."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The detected gamma-ray cascade originates specifically from the beta decay of 96Zr to 96Nb followed by 96Nb decay to excited states of 96Mo, rather than from unrelated background processes or other isotopes."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"First observation and half-life measurement of single beta decay in 96Zr at T1/2 ≈ 2.27 × 10^20 years via gamma-ray cascade from daughter 96Nb."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"The single beta decay half-life of zirconium-96 is measured for the first time at 2.27 × 10^20 years."}],"snapshot_sha256":"a19bea97951011e75849cb6715df20f0e26ec8176f7348d051478ed08681280b"},"formal_canon":{"evidence_count":1,"snapshot_sha256":"dfdfb6824dd52e33507d83ba54d232f3f33a17fb97cfab45533e7863f20c97ba"},"integrity":{"available":true,"clean":true,"detectors_run":[{"findings_count":0,"name":"doi_title_agreement","ran_at":"2026-05-20T00:01:20.410127Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"doi_compliance","ran_at":"2026-05-19T23:52:30.655664Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T23:33:35.159935Z","status":"skipped","version":"1.0.0"},{"findings_count":0,"name":"external_links","ran_at":"2026-05-19T23:32:01.258295Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T23:21:58.822766Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.18344/integrity.json","findings":[],"snapshot_sha256":"813900e8bfe80100ea4d4b1fff67e80769420d81a4a82fb9554f32b443037504","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The single beta decay of $^{96}$Zr has been detected for the first time using a 211 cm$^3$ low-background HPGe detector and an external source consisting of two samples of enriched zirconium (atomic fraction of $^{96}$Zr is 88.28%, total mass is 140.65 g). During the search for the $\\beta$ decay of $^{96}$Zr, the $\\beta$ decay of the daughter nucleus $^{96}$Nb to the excited states of $^{96}$Mo has been observed. The $\\gamma$-ray cascade produced by the $^{96}$Mo nucleus while de-exciting to the ground state has been detected with the HPGe detector. The experiment has been carried out at the B","authors_text":"A. Lubashevskiy, A. M. Gangapshev, A. S. Barabash, D. Filosofov, D. V. Ponomarev, E. A. Yakushev, N. Gorshkov, N. Temerbulatova, S. Evseev, S. Kazartsev, S. Rozov, S. Vasilyev, T. Khussainov, V. I. Yumatov, V. V. Kazalov, V. V. Kuzminov, Yu. M. Gavrilyuk","cross_cats":[],"headline":"The single beta decay half-life of zirconium-96 is measured for the first time at 2.27 × 10^20 years.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2026-05-18T12:57:01Z","title":"First observation of single beta decay of $^{96}$Zr"},"references":{"count":29,"internal_anchors":2,"resolved_work":29,"sample":[{"cited_arxiv_id":"2605.18344","doi":"","is_internal_anchor":true,"ref_index":1,"title":"First observation of single beta decay of $^{96}$Zr","work_id":"b9c1bc1a-410e-4443-8044-ef0b41e52f40","year":2026},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":2,"title":"Agostini et al., Toward the discovery of matter cre- ation with neutrinoless double-beta decay, Rev","work_id":"ac324b61-3e00-4d19-9287-0c0c78dcad00","year":2023},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":3,"title":"J.J. Gomez-Cadenas, J. Martin-Albo, J. Menendez, M. Mezzetto, F. Monrabal, and M. Sorel, The search for neutrinoless doublebeta decay, Riv. Nuovo Cim.46, 619 (2023)","work_id":"05dc02b6-7b2f-4dbf-8bf0-e05ccca9d8ce","year":2023},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":4,"title":"Adams et al., Neutrinoless double beta decay, arXiv:2212.11099","work_id":"9ee77cd0-2beb-43f5-9ae9-d2afeccf50f3","year":null},{"cited_arxiv_id":"","doi":"","is_internal_anchor":false,"ref_index":5,"title":"Simkovic, Neutrino masses and interactions and neu- trino experiments in the laboratory, Phisics-Uspekhi,64, 1238-1260 (2021)","work_id":"c25bcde3-2174-49d3-aa8c-d7a77b1803ca","year":2021}],"snapshot_sha256":"517b274068a179ef1d4d7d38ab84642768ee21f7319d01e5b341e8542e30a7aa"},"source":{"id":"2605.18344","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T23:44:46.154671Z","id":"d1b3c755-706b-4828-a397-07e8f433f544","model_set":{"reader":"grok-4.3"},"one_line_summary":"First observation and half-life measurement of single beta decay in 96Zr at T1/2 ≈ 2.27 × 10^20 years via gamma-ray cascade from daughter 96Nb.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"The single beta decay half-life of zirconium-96 is measured for the first time at 2.27 × 10^20 years.","strongest_claim":"The half-life of the single beta decay of 96Zr is measured to be T_{1/2} = [2.27^{+0.53}_{-0.36}(stat) ± 0.27(syst)]×10^{20} yr.","weakest_assumption":"The detected gamma-ray cascade originates specifically from the beta decay of 96Zr to 96Nb followed by 96Nb decay to excited states of 96Mo, rather than from unrelated background processes or other isotopes."}},"verdict_id":"d1b3c755-706b-4828-a397-07e8f433f544"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:97871834c9eb02d7ac28d5458d75e3c9acce83d2b2fe12496c05bdfafc157d52","target":"record","created_at":"2026-05-20T00:05:56Z","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":"acc4c405b24248df7495ab6304c6429f2f1b09af44c64b8d14e229e38f49eeb7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2026-05-18T12:57:01Z","title_canon_sha256":"24935f9a0fbdd7c395e718b549a0a2b2f7a8c015458d790ab9208e54dc903fab"},"schema_version":"1.0","source":{"id":"2605.18344","kind":"arxiv","version":1}},"canonical_sha256":"9ddab4941663242564568f63d49981bd0ad3d3a91f44dc4431babbd7ac718086","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ddab4941663242564568f63d49981bd0ad3d3a91f44dc4431babbd7ac718086","first_computed_at":"2026-05-20T00:05:56.165842Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:05:56.165842Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ytDRFnR9DBmBzX4kMhaTqrytDAj4+tWpDSPpWVdeXQs4Di28Jp+Tcax1gl95yX6kLeXhFcXGwsvDr/ukBRlgBA==","signature_status":"signed_v1","signed_at":"2026-05-20T00:05:56.166750Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.18344","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97871834c9eb02d7ac28d5458d75e3c9acce83d2b2fe12496c05bdfafc157d52","sha256:c81191483b5111633778247d82dda9fb5311ea302b590e1fee84860ce74b0730"],"state_sha256":"bf86c0d16d6f5e1097d29da0d7f422bd09c7ba28a55ea5de2a705e97b9a4df85"}