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The forward spin-polarizabilities are predicted to be $\\gamma^{(p)}_0=-0.58\\pm 0.20$ and $\\gamma^{(n)}_0=+0.38\\pm 0.22$ in units of $10^{-4}$fm$^4$ where the different signs are found to be due to the isospin dependencies of the $E_{0+}$ and the $(M,E)^{(1/2)}_{1+}$ amplitudes. The backward spin-polarizabilities are predicted to be $\\gamma^{(p)}_\\pi=-36.6$ and $\\gamma^{(n)}_\\pi=+58.3$, to be comp"},"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":"1104.3721","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-04-19T12:10:45Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"c8f75e112cd94e2e3c289a8c853a41ef62ca6fc9936615a16867c76574085603","abstract_canon_sha256":"0e85c9622d61b349e8adbcea543697ae886403a803be1ef0eff4c2b41ddd14bd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:20:06.835128Z","signature_b64":"IRZRmrLuP6jaeHBHl4uTbgwOm+zDOBxv0h7VpWWu6N8AynBxebO92Nof1wdcn1JUXJO1VH9YaPaw4WpKDRHiAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ebd4a8cab1eee18a61f63c43c8c1252ae997cc96e451beae24c00901da3590c2","last_reissued_at":"2026-05-18T03:20:06.834454Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:20:06.834454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Structure of the nucleon and spin-polarizabilities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Martin Schumacher, M.I. 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