{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2000:PZYTLEO3YZCETN3LEJ77OLJVK2","short_pith_number":"pith:PZYTLEO3","schema_version":"1.0","canonical_sha256":"7e713591dbc64449b76b227ff72d3556a21e17d18c8e898b3c40c9072f2c1987","source":{"kind":"arxiv","id":"nucl-th/0012065","version":2},"attestation_state":"computed","paper":{"title":"The role of Delta(1700) excitation and rho production in double pion photoproduction","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"E. Oset, J.C. Nacher, L. Roca (Valencia U.), M.J. Vicente Vacas","submitted_at":"2000-12-18T15:28:39Z","abstract_excerpt":"Recent information on invariant mass distributions of the $\\gamma p\\to\\pi^+\\pi^0 n$ reaction, where previous theoretical models had shown deficiencies, have made more evident the need for new mechanisms, so far neglected or inaccurately included. We have updated a previous model to include new necessary mechanisms. We find that the production of the $\\rho$ meson, and the $\\Delta(1700)$ excitation, through interference with the dominant terms, are important mechanisms that solve the puzzle of the $\\gamma p\\to\\pi^+\\pi^0 n$ reaction without spoiling the early agreement with the $\\gamma p\\to\\pi^+\\"},"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/0012065","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2000-12-18T15:28:39Z","cross_cats_sorted":[],"title_canon_sha256":"b11f847df5045a02ea7faaf83ac72b2d46e07fc095e21848ebb1ee8de390a68e","abstract_canon_sha256":"964282a45d6c318599a7d85addcc969822e42299a6fe2d818b5a2453ff48c05d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:44.963818Z","signature_b64":"8U0O2zNzWMnqdECytVbFUUvF6L0D/c7NIKkF223XpdqKZAkvAPi+8yZrAcHAsjnGiyPaLP7CswxaM1JyRTQUBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e713591dbc64449b76b227ff72d3556a21e17d18c8e898b3c40c9072f2c1987","last_reissued_at":"2026-05-18T04:29:44.963167Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:44.963167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The role of Delta(1700) excitation and rho production in double pion photoproduction","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"E. Oset, J.C. Nacher, L. Roca (Valencia U.), M.J. Vicente Vacas","submitted_at":"2000-12-18T15:28:39Z","abstract_excerpt":"Recent information on invariant mass distributions of the $\\gamma p\\to\\pi^+\\pi^0 n$ reaction, where previous theoretical models had shown deficiencies, have made more evident the need for new mechanisms, so far neglected or inaccurately included. We have updated a previous model to include new necessary mechanisms. We find that the production of the $\\rho$ meson, and the $\\Delta(1700)$ excitation, through interference with the dominant terms, are important mechanisms that solve the puzzle of the $\\gamma p\\to\\pi^+\\pi^0 n$ reaction without spoiling the early agreement with the $\\gamma p\\to\\pi^+\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0012065","kind":"arxiv","version":2},"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/0012065","created_at":"2026-05-18T04:29:44.963252+00:00"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0012065v2","created_at":"2026-05-18T04:29:44.963252+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0012065","created_at":"2026-05-18T04:29:44.963252+00:00"},{"alias_kind":"pith_short_12","alias_value":"PZYTLEO3YZCE","created_at":"2026-05-18T12:25:50.254431+00:00"},{"alias_kind":"pith_short_16","alias_value":"PZYTLEO3YZCETN3L","created_at":"2026-05-18T12:25:50.254431+00:00"},{"alias_kind":"pith_short_8","alias_value":"PZYTLEO3","created_at":"2026-05-18T12:25:50.254431+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/PZYTLEO3YZCETN3LEJ77OLJVK2","json":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2.json","graph_json":"https://pith.science/api/pith-number/PZYTLEO3YZCETN3LEJ77OLJVK2/graph.json","events_json":"https://pith.science/api/pith-number/PZYTLEO3YZCETN3LEJ77OLJVK2/events.json","paper":"https://pith.science/paper/PZYTLEO3"},"agent_actions":{"view_html":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2","download_json":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2.json","view_paper":"https://pith.science/paper/PZYTLEO3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=nucl-th/0012065&json=true","fetch_graph":"https://pith.science/api/pith-number/PZYTLEO3YZCETN3LEJ77OLJVK2/graph.json","fetch_events":"https://pith.science/api/pith-number/PZYTLEO3YZCETN3LEJ77OLJVK2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2/action/storage_attestation","attest_author":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2/action/author_attestation","sign_citation":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2/action/citation_signature","submit_replication":"https://pith.science/pith/PZYTLEO3YZCETN3LEJ77OLJVK2/action/replication_record"}},"created_at":"2026-05-18T04:29:44.963252+00:00","updated_at":"2026-05-18T04:29:44.963252+00:00"}