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We also study the impact of including electron-neutron scattering data, and $\\pi\\pi\\to N\\bar{N}$ data. Using representative datasets we find for a cut of $Q^2\\leq0.5$ GeV$^2$, $r_M^p=0.91^{+0.03}_{-0.06}\\pm0.02$ fm using just proton scattering data; $r_M^p=0.87^{+0.04}_{-0.05}\\pm0.01$ fm adding neutron data; and $r_M^p=0.87^{+0.02}_{-0.02}$ fm adding $\\pi\\pi$ data. We also extract the neutron magne"},"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":"1407.5683","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-07-21T22:46:29Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"e5fd3ac891af07a74ad1f8785c1e4d96e6a4eafe43e3dc01d2632bac09a166d1","abstract_canon_sha256":"33bd24609dc94451899407639e9809f4b4cc09ee187fc97e6541ee35d07eb28c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:39:10.672403Z","signature_b64":"L3ZVHX13Kj/VlTxUdTz5jtm7JkMp695pVq1AYnGD8QDjv/++5IoOcTI9Xt49bdC9MiLenqWFsCSlGvYeeR9TDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30295703a57c6fb01cca3fbec283e18a5068b897390e4b382e7b87cc02155efc","last_reissued_at":"2026-05-18T02:39:10.671681Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:39:10.671681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Model independent extraction of the proton magnetic radius from electron scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Gil Paz, Joydeep Roy, Zachary Epstein","submitted_at":"2014-07-21T22:46:29Z","abstract_excerpt":"We combine constraints from analyticity with experimental electron-proton scattering data to determine the proton magnetic radius without model-dependent assumptions on the shape of the form factor. 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