{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:RSZUC5F4CYFEBJUZJUCTRNN5MX","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":"735853b2a24ad3632bf70fb61f699ec1a3a4b9463ef3bda75decf1cd30a85a04","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"2004-12-24T03:53:12Z","title_canon_sha256":"b0b33f50cd0e90d58253974c544accec862fc0b5f3a03e61d4e9e0569cf197c3"},"schema_version":"1.0","source":{"id":"nucl-th/0412095","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0412095","created_at":"2026-05-18T00:36:52Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0412095v1","created_at":"2026-05-18T00:36:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0412095","created_at":"2026-05-18T00:36:52Z"},{"alias_kind":"pith_short_12","alias_value":"RSZUC5F4CYFE","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"RSZUC5F4CYFEBJUZ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"RSZUC5F4","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:9fab04deb7ecd24679e2bbe7b4257c4e43aa753cdef61fa98d55919e25183c2c","target":"graph","created_at":"2026-05-18T00:36:52Z","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":"Photoproduction of the pentaquark particle Theta^+ on the nucleon has been studied by using an isobar and a Regge model. Using the isobar model, total cross sections around 100 nb for the gamma n --> K- Theta+ channel and 400 nb for the gamma p --> {\\bar K}0 Theta+ process are obtained. The inclusion of the K* intermediate state yields a substantially large effect, especially in the gamma p --> {\\bar K}0 Theta+ process. The Regge approach predicts smaller cross sections, i.e., less than 100 nb (20 nb) for the process on the neutron (proton). By using an elementary operator from the isobar mode","authors_text":"A. Salam, C. Bennhold, K. Miyagawa, T. Mart","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2004-12-24T03:53:12Z","title":"Photoproduction of Theta+ on the nucleon and deuteron"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0412095","kind":"arxiv","version":1},"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":"sha256:1da473e6c637f3f95658d427ccfccab71710a80e5b176a28d2d15ec1a1cc1f40","target":"record","created_at":"2026-05-18T00:36:52Z","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":"735853b2a24ad3632bf70fb61f699ec1a3a4b9463ef3bda75decf1cd30a85a04","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"nucl-th","submitted_at":"2004-12-24T03:53:12Z","title_canon_sha256":"b0b33f50cd0e90d58253974c544accec862fc0b5f3a03e61d4e9e0569cf197c3"},"schema_version":"1.0","source":{"id":"nucl-th/0412095","kind":"arxiv","version":1}},"canonical_sha256":"8cb34174bc160a40a6994d0538b5bd65cc07bc6f7fb9ed24b44032e45dbf821d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8cb34174bc160a40a6994d0538b5bd65cc07bc6f7fb9ed24b44032e45dbf821d","first_computed_at":"2026-05-18T00:36:52.727653Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:52.727653Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+8uoznIS86VvzrH3WsjmQOspXLmLE4x2olF51sPvya/U9G7/ooNvU6HDctxveCi1jM0cxGer5XkFJKmujZ2mBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:52.728299Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0412095","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1da473e6c637f3f95658d427ccfccab71710a80e5b176a28d2d15ec1a1cc1f40","sha256:9fab04deb7ecd24679e2bbe7b4257c4e43aa753cdef61fa98d55919e25183c2c"],"state_sha256":"cf3302447d09f942f841fb8875e94a5cd79d9c87eaed643a006d382dd9f24208"}