{"paper":{"title":"Compton Scattering by the Nucleon","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-ex","authors_text":"Martin Schumacher","submitted_at":"2004-11-24T11:18:05Z","abstract_excerpt":"The status of Compton scattering by the nucleon at energies of the first and second resonance is summarized. In addition to a general test of dispersion theories and a precise determination of polarizabilities, the validities of four fundamental sum rules are explored. {\\it Recommended} averages of experimental values for the electromagnetic polarizabilities and spin-polarizabilities of the nucleon are determined: $\\alpha_p=12.0\\pm 0.6$, $\\beta_p=1.9\\mp 0.6$, $\\alpha_n= 12.5 \\pm 1.7$, $\\beta_n= 2.7 \\mp 1.8$ (unit $10^{-4}$fm$^3$), $\\gamma^{(p)}_\\pi= -38.7 \\pm 1.8$, $\\gamma^{(n)}_\\pi = 58.6 \\pm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0411048","kind":"arxiv","version":3},"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"}