{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:ALYES5RYTBBGO65ODQRBRWT7JL","short_pith_number":"pith:ALYES5RY","schema_version":"1.0","canonical_sha256":"02f04976389842677bae1c2218da7f4ad3681058bc84b5380f88a6dc6a5c94b2","source":{"kind":"arxiv","id":"hep-ph/0509055","version":1},"attestation_state":"computed","paper":{"title":"Two-photon-exchange effects in the electro-excitation of the $\\Delta$ resonance","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Carl E. Carlson, JLAB), Marc Vanderhaeghen (William-Mary College, Vladimir Pascalutsa","submitted_at":"2005-09-06T23:59:53Z","abstract_excerpt":"We evaluate the two-photon exchange contribution to the $e N \\to e \\Delta(1232) \\to e \\pi N$ process at large momentum transfer with the aim of a precision study of the ratios of electric quadrupole (E2) and Coulomb quadrupole (C2) to the magnetic dipole (M1) $\\gamma^* N \\Delta$ transitions. We relate the two-photon exchange amplitude to the $N \\to \\Delta$ generalized parton distributions and obtain a quantitative estimate of the two-photon effects. The two-photon exchange corrections to the C2/M1 ratio depend strongly on whether this quantity is obtained from an interference cross section or "},"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":"hep-ph/0509055","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2005-09-06T23:59:53Z","cross_cats_sorted":[],"title_canon_sha256":"937ff90bd531b7f3ad5224ed0a6f0ac8e0d86f541919ed26b53ab102224ae875","abstract_canon_sha256":"db6c1ed73ea7d0c49a6be12a56d880a8090635de70fab3fdf5977f13968251ff"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:36:19.392993Z","signature_b64":"p3WEpZCxUEoQ2UY0f3MLdrc/cQQ1arAHrXdx3Ox4odAHgGMDc+Pz14hEgmNWE9nLGBeBzrzzgX3kH9Yid2e/AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02f04976389842677bae1c2218da7f4ad3681058bc84b5380f88a6dc6a5c94b2","last_reissued_at":"2026-05-18T02:36:19.392555Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:36:19.392555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Two-photon-exchange effects in the electro-excitation of the $\\Delta$ resonance","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Carl E. Carlson, JLAB), Marc Vanderhaeghen (William-Mary College, Vladimir Pascalutsa","submitted_at":"2005-09-06T23:59:53Z","abstract_excerpt":"We evaluate the two-photon exchange contribution to the $e N \\to e \\Delta(1232) \\to e \\pi N$ process at large momentum transfer with the aim of a precision study of the ratios of electric quadrupole (E2) and Coulomb quadrupole (C2) to the magnetic dipole (M1) $\\gamma^* N \\Delta$ transitions. We relate the two-photon exchange amplitude to the $N \\to \\Delta$ generalized parton distributions and obtain a quantitative estimate of the two-photon effects. The two-photon exchange corrections to the C2/M1 ratio depend strongly on whether this quantity is obtained from an interference cross section or "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0509055","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":"hep-ph/0509055","created_at":"2026-05-18T02:36:19.392611+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0509055v1","created_at":"2026-05-18T02:36:19.392611+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0509055","created_at":"2026-05-18T02:36:19.392611+00:00"},{"alias_kind":"pith_short_12","alias_value":"ALYES5RYTBBG","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_16","alias_value":"ALYES5RYTBBGO65O","created_at":"2026-05-18T12:25:53.335082+00:00"},{"alias_kind":"pith_short_8","alias_value":"ALYES5RY","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/ALYES5RYTBBGO65ODQRBRWT7JL","json":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL.json","graph_json":"https://pith.science/api/pith-number/ALYES5RYTBBGO65ODQRBRWT7JL/graph.json","events_json":"https://pith.science/api/pith-number/ALYES5RYTBBGO65ODQRBRWT7JL/events.json","paper":"https://pith.science/paper/ALYES5RY"},"agent_actions":{"view_html":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL","download_json":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL.json","view_paper":"https://pith.science/paper/ALYES5RY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ph/0509055&json=true","fetch_graph":"https://pith.science/api/pith-number/ALYES5RYTBBGO65ODQRBRWT7JL/graph.json","fetch_events":"https://pith.science/api/pith-number/ALYES5RYTBBGO65ODQRBRWT7JL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL/action/storage_attestation","attest_author":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL/action/author_attestation","sign_citation":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL/action/citation_signature","submit_replication":"https://pith.science/pith/ALYES5RYTBBGO65ODQRBRWT7JL/action/replication_record"}},"created_at":"2026-05-18T02:36:19.392611+00:00","updated_at":"2026-05-18T02:36:19.392611+00:00"}