{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:H6565WATLKYAGEAD2ORYO6QPOE","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":"b6e2fd2798c6b6ff5002b8d7f83e43b51b876134fee7426445eb74dbc48e7aeb","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2002-05-31T08:25:30Z","title_canon_sha256":"8d985dc82881df8f398b74622e71e04700990a1244bd19cae4162f7e46321023"},"schema_version":"1.0","source":{"id":"hep-ex/0205104","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0205104","created_at":"2026-07-04T15:32:11Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0205104v1","created_at":"2026-07-04T15:32:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0205104","created_at":"2026-07-04T15:32:11Z"},{"alias_kind":"pith_short_12","alias_value":"H6565WATLKYA","created_at":"2026-07-04T15:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"H6565WATLKYAGEAD","created_at":"2026-07-04T15:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"H6565WAT","created_at":"2026-07-04T15:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:ab26776b5b940dc25b216748e7e600bc9883cd0ba456d2d77111c03678b3fa12","target":"graph","created_at":"2026-07-04T15:32:11Z","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-ex/0205104/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the observation of prompt J/psi via double ccbar production from the e+e- continuum. In this process one ccbar pair fragments into a J/psi meson while the remaining pair either produces a bound charmonium state or fragments into open charm. Both cases have been observed: the first by studying the mass spectrum of the system recoiling against the J/psi, and the second by reconstructing the J/psi together with a charmed meson. We find cross-sections of \\sigma(e+ e- -> J/psi eta_c (gamma)) * BR (eta_c -> >=4 charged) = 0.033 (+0.007 -0.006)(stat) \\pm 0.009(syst)pb and \\sigma(e+ e- -> J/","authors_text":"et al, K.Abe, The Belle Collaboration","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"2002-05-31T08:25:30Z","title":"Observation of Double cc bar Production in e+ e- Annihilation at sqrt{s} ~ 10.6 GeV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0205104","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":"sha256:91fe05796688e8743eaa38150d1fa4f20008ee5d4a8b4b0fdc56866b8cc4fd06","target":"record","created_at":"2026-07-04T15:32:11Z","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":"b6e2fd2798c6b6ff5002b8d7f83e43b51b876134fee7426445eb74dbc48e7aeb","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2002-05-31T08:25:30Z","title_canon_sha256":"8d985dc82881df8f398b74622e71e04700990a1244bd19cae4162f7e46321023"},"schema_version":"1.0","source":{"id":"hep-ex/0205104","kind":"arxiv","version":1}},"canonical_sha256":"3fbbeed8135ab0031003d3a3877a0f7106999410f02e6488385442cde99a6131","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fbbeed8135ab0031003d3a3877a0f7106999410f02e6488385442cde99a6131","first_computed_at":"2026-07-04T15:32:11.322511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:32:11.322511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c0xuBk5xU4BvwYwPMS1ysfCaEO2T7LG1qfFcBRrzfx0CH40MIoE26destcrwUKVgON19KCIBohlDu4jjmroODQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:32:11.322899Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/0205104","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91fe05796688e8743eaa38150d1fa4f20008ee5d4a8b4b0fdc56866b8cc4fd06","sha256:ab26776b5b940dc25b216748e7e600bc9883cd0ba456d2d77111c03678b3fa12"],"state_sha256":"5e76402b5182a48a5339dffc732d398859cce2ff945bca0d534c61f59adb7698"}