{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:IZMVJGSRPMOWOIJW2WKBL4XA2H","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":"9d36c27607981d937138f2e67b27faf991deafbd9f7576c0c7274d852da04fe7","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-04-30T12:33:30Z","title_canon_sha256":"e34b4d08baf046413ea654cae835bfe67b190603c73ac76301a20a21ee233888"},"schema_version":"1.0","source":{"id":"hep-ph/0104309","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0104309","created_at":"2026-07-04T16:27:20Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0104309v2","created_at":"2026-07-04T16:27:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0104309","created_at":"2026-07-04T16:27:20Z"},{"alias_kind":"pith_short_12","alias_value":"IZMVJGSRPMOW","created_at":"2026-07-04T16:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"IZMVJGSRPMOWOIJW","created_at":"2026-07-04T16:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"IZMVJGSR","created_at":"2026-07-04T16:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:c22cdd3e833c069a0bfb345025f1401b4ab852f9ecaad1a1ba8abe2abe78d3ce","target":"graph","created_at":"2026-07-04T16:27:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/hep-ph/0104309/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The double J/\\psi(DJ) production in direct photon-photon collision is investigated. It is found that the J/\\psi production rate in this process is of the same order of magnitude as those of previously discussed ones, which hints the dominant J/\\psi inclusive production process in the direct photon-photon collision is still not being touched. As DJ production process has a clear distinction from the single J/\\psi inclusive processes in the final states, experimental study on it would be helpful to clarify the validity of color-singlet model.","authors_text":"Cong-Feng Qiao","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2001-04-30T12:33:30Z","title":"Double J/\\psi Production at Photon Colliders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0104309","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:e889c951770b4bf731a10700e6677ad8a909e7995ce653b99872f95590e30024","target":"record","created_at":"2026-07-04T16:27:20Z","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":"9d36c27607981d937138f2e67b27faf991deafbd9f7576c0c7274d852da04fe7","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2001-04-30T12:33:30Z","title_canon_sha256":"e34b4d08baf046413ea654cae835bfe67b190603c73ac76301a20a21ee233888"},"schema_version":"1.0","source":{"id":"hep-ph/0104309","kind":"arxiv","version":2}},"canonical_sha256":"4659549a517b1d672136d59415f2e0d1d3e9a361c73741b0d21a6d1dacce2c65","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4659549a517b1d672136d59415f2e0d1d3e9a361c73741b0d21a6d1dacce2c65","first_computed_at":"2026-07-04T16:27:20.252472Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:27:20.252472Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YIdl9CzZ5aWL8h6dinA3R5xvj5LaaL9AZaHsbOuNkNDXZvNisSFdk3FPAfiKX/z+4v1LcdZa8Spf1tPBnzt1DA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:27:20.252803Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0104309","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e889c951770b4bf731a10700e6677ad8a909e7995ce653b99872f95590e30024","sha256:c22cdd3e833c069a0bfb345025f1401b4ab852f9ecaad1a1ba8abe2abe78d3ce"],"state_sha256":"c6a14e0d978e17c4c8ffe37562a5face7ba21c0b0446bf55e5dbce1a5a35a086"}