{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:SVD7ZRCNMA2OPDEIOP5KCPVKLL","short_pith_number":"pith:SVD7ZRCN","schema_version":"1.0","canonical_sha256":"9547fcc44d6034e78c8873faa13eaa5aca3eeab80c565375a0da1720645fa2a3","source":{"kind":"arxiv","id":"1706.00414","version":2},"attestation_state":"computed","paper":{"title":"Precision measurement of the $\\beta$-asymmetry in spin-polarized $^{37}\\mathrm{K}$ decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Gorelov, B. Fenker, C.L. Warner, D. Ashery, D. Melconian, G. Gwinner, I. Cohen, I. Craiciu, J.A. Behr, J. McNeil, K. Olchanski, M. Anholm, M. Mehlman, P.D. Shidling, R.S. Behling, S. Smale","submitted_at":"2017-06-01T17:55:25Z","abstract_excerpt":"Using TRIUMF's neutral atom trap, TRINAT, for nuclear $\\beta$ decay, we have measured the $\\beta$ asymmetry with respect to the initial nuclear spin in $^{37}\\mathrm{K}$ to be $A_\\beta=-0.5707(13)_\\mathrm{syst}(13)_\\mathrm{stat}(5)_\\mathrm{pol}$, a 0.3% measurement. This is the best relative accuracy of any $\\beta$-asymmetry measurement in a nucleus or the neutron, and is in agreement with the standard model prediction $-0.5706(7)$. We compare constraints on physics beyond the standard model with other $\\beta$-decay measurements, and improve the value of $V_\\mathrm{ud}$ measured in this mirror"},"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":"1706.00414","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2017-06-01T17:55:25Z","cross_cats_sorted":[],"title_canon_sha256":"ae13fe6d1c14bad4648ba53697f7669f840499398ed7513926064e85f7072d56","abstract_canon_sha256":"6afbe91e31e51e95b977605e3a5a18d4d1b31cfbfdf87fdef48c938734d1490c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:35.793059Z","signature_b64":"hDLVNM8YXep8bBjPnVAHoMRAR3hEHUEWYT4yvw1dTxZtJOljfZTRy/vgcKUvyWWT0uYpI5iBeC97RWFzoCqhDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9547fcc44d6034e78c8873faa13eaa5aca3eeab80c565375a0da1720645fa2a3","last_reissued_at":"2026-05-18T00:23:35.792507Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:35.792507Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Precision measurement of the $\\beta$-asymmetry in spin-polarized $^{37}\\mathrm{K}$ decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Gorelov, B. Fenker, C.L. Warner, D. Ashery, D. Melconian, G. Gwinner, I. Cohen, I. Craiciu, J.A. Behr, J. McNeil, K. Olchanski, M. Anholm, M. Mehlman, P.D. Shidling, R.S. Behling, S. Smale","submitted_at":"2017-06-01T17:55:25Z","abstract_excerpt":"Using TRIUMF's neutral atom trap, TRINAT, for nuclear $\\beta$ decay, we have measured the $\\beta$ asymmetry with respect to the initial nuclear spin in $^{37}\\mathrm{K}$ to be $A_\\beta=-0.5707(13)_\\mathrm{syst}(13)_\\mathrm{stat}(5)_\\mathrm{pol}$, a 0.3% measurement. This is the best relative accuracy of any $\\beta$-asymmetry measurement in a nucleus or the neutron, and is in agreement with the standard model prediction $-0.5706(7)$. We compare constraints on physics beyond the standard model with other $\\beta$-decay measurements, and improve the value of $V_\\mathrm{ud}$ measured in this mirror"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.00414","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1706.00414","created_at":"2026-05-18T00:23:35.792576+00:00"},{"alias_kind":"arxiv_version","alias_value":"1706.00414v2","created_at":"2026-05-18T00:23:35.792576+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.00414","created_at":"2026-05-18T00:23:35.792576+00:00"},{"alias_kind":"pith_short_12","alias_value":"SVD7ZRCNMA2O","created_at":"2026-05-18T12:31:43.269735+00:00"},{"alias_kind":"pith_short_16","alias_value":"SVD7ZRCNMA2OPDEI","created_at":"2026-05-18T12:31:43.269735+00:00"},{"alias_kind":"pith_short_8","alias_value":"SVD7ZRCN","created_at":"2026-05-18T12:31:43.269735+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL","json":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL.json","graph_json":"https://pith.science/api/pith-number/SVD7ZRCNMA2OPDEIOP5KCPVKLL/graph.json","events_json":"https://pith.science/api/pith-number/SVD7ZRCNMA2OPDEIOP5KCPVKLL/events.json","paper":"https://pith.science/paper/SVD7ZRCN"},"agent_actions":{"view_html":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL","download_json":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL.json","view_paper":"https://pith.science/paper/SVD7ZRCN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1706.00414&json=true","fetch_graph":"https://pith.science/api/pith-number/SVD7ZRCNMA2OPDEIOP5KCPVKLL/graph.json","fetch_events":"https://pith.science/api/pith-number/SVD7ZRCNMA2OPDEIOP5KCPVKLL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL/action/storage_attestation","attest_author":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL/action/author_attestation","sign_citation":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL/action/citation_signature","submit_replication":"https://pith.science/pith/SVD7ZRCNMA2OPDEIOP5KCPVKLL/action/replication_record"}},"created_at":"2026-05-18T00:23:35.792576+00:00","updated_at":"2026-05-18T00:23:35.792576+00:00"}