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The disconnected insertion (vacuum polarization from the sea quark) for the $u$ or $d$ quark is $- 0.12\\pm 0.01 $ and the $s$ quark also contributes $-0.12\\pm 0.01$. The total $g_A^1$ is thus $0.25 \\pm 0.12$ which is in agreement with"},"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":"hep-ph/9502334","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-02-17T03:17:32Z","cross_cats_sorted":["hep-lat"],"title_canon_sha256":"e7ae0cf8841a357faa349c0ba55b9b1999de574ff1cbf7acbeca0e974e0f2c97","abstract_canon_sha256":"f32bb0fb7a7d3f1a7b51e1f3326d8edb88cdf291accb8b560c1f26478e3af05a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:33.532256Z","signature_b64":"j42vOGx/NskALv5wgMM5GEW+qth6EtSz4BinonSvc11oIQvY7Ono5sGs/yuljv0C2UMdv1OSaSywcK4Ko5wzCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83fc6a18221c77a68b1fc1495e7c1a0fb64df0c4c54faa182428cc55decc62a5","last_reissued_at":"2026-05-18T01:06:33.531539Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:33.531539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"FLAVOR-SINGLET g_A FROM LATTICE QCD","license":"","headline":"","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"J.-F. Lagae, K.F. Liu, S.J. Dong","submitted_at":"1995-02-17T03:17:32Z","abstract_excerpt":"We report on a lattice QCD calculation of the flavor-singlet axial coupling constant $g_A$ of the proton from the axial-vector current. The simulation is carried out at $\\beta = 6$ on a quenched $16^3 \\times 24$ lattice. An extrapolation to the chiral limit shows that the connected insertion (valence and cloud parts) is $0.62 \\pm 0.09$, which is close to $g_A^8$. The disconnected insertion (vacuum polarization from the sea quark) for the $u$ or $d$ quark is $- 0.12\\pm 0.01 $ and the $s$ quark also contributes $-0.12\\pm 0.01$. 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