{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:C6BZZPUA5XVZDPBLWRZGRJIF4Q","short_pith_number":"pith:C6BZZPUA","schema_version":"1.0","canonical_sha256":"17839cbe80edeb91bc2bb47268a505e428964e80c0304245eff563b34a4393ca","source":{"kind":"arxiv","id":"1302.6300","version":1},"attestation_state":"computed","paper":{"title":"Octet Spin Fractions and the Proton Spin Problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"nucl-th","authors_text":"A.W. Thomas, F. Myhrer, K. Tsushima, P.E. Shanahan, R.D. Young","submitted_at":"2013-02-26T03:13:05Z","abstract_excerpt":"The relatively small fraction of the spin of the proton carried by its quarks presents a major challenge to our understanding of the strong interaction. Traditional efforts to explore this problem have involved new and imaginative experiments and QCD based studies of the nucleon. We propose a new approach to the problem which exploits recent advances in lattice QCD. In particular, we extract values for the spin carried by the quarks in other members of the baryon octet in order to see whether the suppression observed for the proton is a general property or depends significantly on the baryon s"},"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":"1302.6300","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-02-26T03:13:05Z","cross_cats_sorted":["hep-ex","hep-ph"],"title_canon_sha256":"ea85858de9abdf4eab79015bc660336fa651a9cf27c800890197422fe9159978","abstract_canon_sha256":"c202ff12cea8a382da9f50cf1e44274c874fcb1b71e18e56f70270fca615a29c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:16:28.737743Z","signature_b64":"+T0gn8RAHBL1WVqC6OuXO0BcCZbSOyDfRc28nA0vTG2Yx+rWe8GEHYeh4qv1tYuFzw0GkY5Jz6PS+om+dI/tDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17839cbe80edeb91bc2bb47268a505e428964e80c0304245eff563b34a4393ca","last_reissued_at":"2026-05-18T03:16:28.736977Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:16:28.736977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Octet Spin Fractions and the Proton Spin Problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"nucl-th","authors_text":"A.W. Thomas, F. Myhrer, K. Tsushima, P.E. Shanahan, R.D. Young","submitted_at":"2013-02-26T03:13:05Z","abstract_excerpt":"The relatively small fraction of the spin of the proton carried by its quarks presents a major challenge to our understanding of the strong interaction. Traditional efforts to explore this problem have involved new and imaginative experiments and QCD based studies of the nucleon. We propose a new approach to the problem which exploits recent advances in lattice QCD. In particular, we extract values for the spin carried by the quarks in other members of the baryon octet in order to see whether the suppression observed for the proton is a general property or depends significantly on the baryon s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.6300","kind":"arxiv","version":1},"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":"1302.6300","created_at":"2026-05-18T03:16:28.737097+00:00"},{"alias_kind":"arxiv_version","alias_value":"1302.6300v1","created_at":"2026-05-18T03:16:28.737097+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.6300","created_at":"2026-05-18T03:16:28.737097+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/C6BZZPUA5XVZDPBLWRZGRJIF4Q","json":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q.json","graph_json":"https://pith.science/api/pith-number/C6BZZPUA5XVZDPBLWRZGRJIF4Q/graph.json","events_json":"https://pith.science/api/pith-number/C6BZZPUA5XVZDPBLWRZGRJIF4Q/events.json","paper":"https://pith.science/paper/C6BZZPUA"},"agent_actions":{"view_html":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q","download_json":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q.json","view_paper":"https://pith.science/paper/C6BZZPUA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1302.6300&json=true","fetch_graph":"https://pith.science/api/pith-number/C6BZZPUA5XVZDPBLWRZGRJIF4Q/graph.json","fetch_events":"https://pith.science/api/pith-number/C6BZZPUA5XVZDPBLWRZGRJIF4Q/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q/action/storage_attestation","attest_author":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q/action/author_attestation","sign_citation":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q/action/citation_signature","submit_replication":"https://pith.science/pith/C6BZZPUA5XVZDPBLWRZGRJIF4Q/action/replication_record"}},"created_at":"2026-05-18T03:16:28.737097+00:00","updated_at":"2026-05-18T03:16:28.737097+00:00"}