{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:TZ5AB6QJOVMQODTX3A2JOVYM4G","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0890bb8aea0c46f999eee00e2fa23dc59d05cd2c1f70c4da536a5397e928e181","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"2002-12-30T10:35:08Z","title_canon_sha256":"d44648d6a0aa36600c94915015195c0e8c3f66cd9ca8b9a32bc5169abb22f448"},"schema_version":"1.0","source":{"id":"nucl-th/0212106","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0212106","created_at":"2026-05-18T01:05:19Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0212106v2","created_at":"2026-05-18T01:05:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0212106","created_at":"2026-05-18T01:05:19Z"},{"alias_kind":"pith_short_12","alias_value":"TZ5AB6QJOVMQ","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"TZ5AB6QJOVMQODTX","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"TZ5AB6QJ","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:2700efafe4f7ad3852f8583cbe33fb2aac8a3bab17d4099890b50321272b1ba8","target":"graph","created_at":"2026-05-18T01:05:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"A reggeized model for \\eta and \\eta' photoproduction on the nucleon is presented. In this model, t-channel vector meson exchanges are described in terms of Regge trajectories to comply with the correct high energy behavior. We compare this reggeized model with an isobar model (\\eta-MAID), where the t-channel exchanges are described by \\rho and \\omega poles. Both models contain the same resonance contributions, and describe current \\gamma p \\to \\eta p data up to E_\\gamma^{lab} = 2 GeV quite well, but only the reggeized model can be successfully extended to higher energies. For the \\gamma p \\to ","authors_text":"D. Drechsel, L. Tiator, M. Vanderhaeghen, Shin Nan Yang, Wen-Tai Chiang","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2002-12-30T10:35:08Z","title":"A reggeized model for eta and eta-prime photoproduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0212106","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6e79929ae6d75617657d7035641ae4bbb4f89d43d2eecf0a64bf8475c33779a6","target":"record","created_at":"2026-05-18T01:05:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0890bb8aea0c46f999eee00e2fa23dc59d05cd2c1f70c4da536a5397e928e181","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"2002-12-30T10:35:08Z","title_canon_sha256":"d44648d6a0aa36600c94915015195c0e8c3f66cd9ca8b9a32bc5169abb22f448"},"schema_version":"1.0","source":{"id":"nucl-th/0212106","kind":"arxiv","version":2}},"canonical_sha256":"9e7a00fa097559070e77d83497570ce19bbd14750854f5a82c253103f4b82eec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e7a00fa097559070e77d83497570ce19bbd14750854f5a82c253103f4b82eec","first_computed_at":"2026-05-18T01:05:19.568743Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:19.568743Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zLr7GHrxJ9AIrMMuDYxLO/0FuEvooqPnSILtufYhAsOcDwdY0iVt2k1meOI11wNTwei2K5X25R+qJRW97jwmCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:19.569132Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0212106","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e79929ae6d75617657d7035641ae4bbb4f89d43d2eecf0a64bf8475c33779a6","sha256:2700efafe4f7ad3852f8583cbe33fb2aac8a3bab17d4099890b50321272b1ba8"],"state_sha256":"55383bc7c3f5e4a42799717b0d4b40bcbc488e87fe5dc6d9db307f392b119290"}