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Employing a parametrization of the F_1 structure function valid down to Q^2 = 0.06 GeV^2, the polarizabilities at the real photon point are found by extrapolating the results of finite Q^2 to Q^2 = 0 GeV^2. We determine the evolution over four-momentum transfer to be consistent with the Baldin sum rule using photoproduction data, obtaining \\alpha + \\beta = 13.7 \\pm 0.7 \\times 10^{-4}\\, \\text{fm}^3."},"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":"1401.8062","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2014-01-31T04:48:55Z","cross_cats_sorted":["hep-ph","nucl-ex"],"title_canon_sha256":"33c2ab5c2a1694890c6eea6de43e893d8c7ceb609d921bed21cf81c3499d7bb7","abstract_canon_sha256":"a0160a9781c64519d344e963df7ecbab2fde7450aa1a47057633498c80e2ecd9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:54.190969Z","signature_b64":"vh+FTQpERSQqbDK6QjA55tyY58VfsGW/VnPetfeNGACVmIHvaWvqZ2fy9zcHizp5qJRspn4kGNb8eGSIcNZ0Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15582be6ade33ce72744ce870098174c63abd937c71c683ed8b36523b5b0fd9c","last_reissued_at":"2026-05-18T01:44:54.190382Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:54.190382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Momentum transfer dependence of the proton's electric and magnetic polarizabilities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"A. 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