{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:PTHQ5YLCXMPHCKHYP2TNZHSFWE","short_pith_number":"pith:PTHQ5YLC","schema_version":"1.0","canonical_sha256":"7ccf0ee162bb1e7128f87ea6dc9e45b109a24faeb51a002de3e3a944064c91f3","source":{"kind":"arxiv","id":"nucl-th/0506039","version":1},"attestation_state":"computed","paper":{"title":"Two-photon exchange in elastic electron-nucleon scattering","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"J.A. Tjon, P.G. Blunden, W. Melnitchouk","submitted_at":"2005-06-13T16:32:56Z","abstract_excerpt":"A detailed study of two-photon exchange in unpolarized and polarized elastic electron--nucleon scattering is presented, taking particular account of nucleon finite size effects. Contributions from nucleon elastic intermediate states are found to have a strong angular dependence, which leads to a partial resolution of the discrepancy between the Rosenbluth and polarization transfer measurements of the proton electric to magnetic form factor ratio, G_E/G_M. The two-photon exchange contribution to the longitudinal polarization transfer P_L is small, whereas the contribution to the transverse pola"},"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":"nucl-th/0506039","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2005-06-13T16:32:56Z","cross_cats_sorted":[],"title_canon_sha256":"f14d0dc1ef18c5a8d317f8bc90ccfec40d656a1cdfffb61e27015c4a1357217c","abstract_canon_sha256":"a1906dba691c2ab37533c471fca954f2b77f9e5819d7ae74548293b428f49d7a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:08.060266Z","signature_b64":"TjXUMaTMUopDl693sgqCclFjnk+DDvX+r1+wfuuWt//9AYZSGtpmhgj+0T1uN3SGLBz8H4JSy7x7vAsKxPzjCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ccf0ee162bb1e7128f87ea6dc9e45b109a24faeb51a002de3e3a944064c91f3","last_reissued_at":"2026-05-18T02:35:08.059823Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:08.059823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Two-photon exchange in elastic electron-nucleon scattering","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"J.A. Tjon, P.G. Blunden, W. Melnitchouk","submitted_at":"2005-06-13T16:32:56Z","abstract_excerpt":"A detailed study of two-photon exchange in unpolarized and polarized elastic electron--nucleon scattering is presented, taking particular account of nucleon finite size effects. Contributions from nucleon elastic intermediate states are found to have a strong angular dependence, which leads to a partial resolution of the discrepancy between the Rosenbluth and polarization transfer measurements of the proton electric to magnetic form factor ratio, G_E/G_M. The two-photon exchange contribution to the longitudinal polarization transfer P_L is small, whereas the contribution to the transverse pola"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0506039","kind":"arxiv","version":1},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0506039","created_at":"2026-05-18T02:35:08.059888+00:00"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0506039v1","created_at":"2026-05-18T02:35:08.059888+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0506039","created_at":"2026-05-18T02:35:08.059888+00:00"},{"alias_kind":"pith_short_12","alias_value":"PTHQ5YLCXMPH","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_16","alias_value":"PTHQ5YLCXMPHCKHY","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_8","alias_value":"PTHQ5YLC","created_at":"2026-05-18T12:25:53.335082+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE","json":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE.json","graph_json":"https://pith.science/api/pith-number/PTHQ5YLCXMPHCKHYP2TNZHSFWE/graph.json","events_json":"https://pith.science/api/pith-number/PTHQ5YLCXMPHCKHYP2TNZHSFWE/events.json","paper":"https://pith.science/paper/PTHQ5YLC"},"agent_actions":{"view_html":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE","download_json":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE.json","view_paper":"https://pith.science/paper/PTHQ5YLC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=nucl-th/0506039&json=true","fetch_graph":"https://pith.science/api/pith-number/PTHQ5YLCXMPHCKHYP2TNZHSFWE/graph.json","fetch_events":"https://pith.science/api/pith-number/PTHQ5YLCXMPHCKHYP2TNZHSFWE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE/action/storage_attestation","attest_author":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE/action/author_attestation","sign_citation":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE/action/citation_signature","submit_replication":"https://pith.science/pith/PTHQ5YLCXMPHCKHYP2TNZHSFWE/action/replication_record"}},"created_at":"2026-05-18T02:35:08.059888+00:00","updated_at":"2026-05-18T02:35:08.059888+00:00"}