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We measure sidereal oscillations in the signal to search for anomalous spin coupling of extra-solar origin. We determine the equatorial components of the background field interacting with the neutron spin to be $\\widetilde{b}^n_X = (0.1 \\pm 1.6) \\times 10^{-33}$ GeV and $\\widetilde{b}^n_Y = (2.5 \\pm 1.6) \\times 10^{-33}$ GeV, improving o"},"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":"1006.5425","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2010-06-28T18:16:19Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"5690d7a9ff9b378be5289162ec61b4a422fa7fa0022774b783da50a8b8a0b618","abstract_canon_sha256":"2d24c6877c2b3462406c7ae6f7f250c58c73a281033fac1cb5ce35eea825e956"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:38:39.974581Z","signature_b64":"8rRy6q04LDHnQ8ms+npOTkp0KJtMh1B9TgPFwSgAX7fZ0s/qO9UihftqUewUu0CFBCoflG8crFHuljhXDOhVDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8aa8ecea4bf347d1af6369f6f6cb4e3af0c801550fdcf6102f1f70f08676e327","last_reissued_at":"2026-05-18T04:38:39.974008Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:38:39.974008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"New limit on Lorentz and CPT-violating neutron spin interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"physics.atom-ph","authors_text":"J. 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