{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:Q7AU247K44OCYFYH4XCMPZYUPS","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":"7dad24008906f53155e9067539c962ca4fd75b462d11874e16283b5c4cee5918","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2000-03-16T07:22:35Z","title_canon_sha256":"6668fa3cf39b29f1dc065e5f0d6c6a45147af35470c7f6eaeda035a12df8233f"},"schema_version":"1.0","source":{"id":"hep-ex/0003020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0003020","created_at":"2026-07-04T15:29:21Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0003020v1","created_at":"2026-07-04T15:29:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0003020","created_at":"2026-07-04T15:29:21Z"},{"alias_kind":"pith_short_12","alias_value":"Q7AU247K44OC","created_at":"2026-07-04T15:29:21Z"},{"alias_kind":"pith_short_16","alias_value":"Q7AU247K44OCYFYH","created_at":"2026-07-04T15:29:21Z"},{"alias_kind":"pith_short_8","alias_value":"Q7AU247K","created_at":"2026-07-04T15:29:21Z"}],"graph_snapshots":[{"event_id":"sha256:69e7a2c197eb847d25263e3f3235a844d13d5394bfead8a12de1c1ae248b34da","target":"graph","created_at":"2026-07-04T15:29:21Z","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/0003020/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cross sections for elastic photoproduction of J/Psi and Upsilon mesons are presented. For J/Psi mesons the dependence on the photon-proton centre-of-mass energy W_gammap is analysed in an extended range with respect to previous measurements of 26<=W_gammap<= 285 GeV. The measured energy dependence is parameterized as sigma_gammap proportional W_gammap^delta with delta=0.83+-0.07. The differential cross section dsigma/dt for J/Psi mesons is derived, its dependence on W_gammap and on t is analysed and the effective trajectory (in terms of Regge theory) is determined to be alpha(t)=(1.27+-0.05)+(","authors_text":"et al, H1 Collaboration: C.Adloff","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"2000-03-16T07:22:35Z","title":"Elastic Photoproduction of J/psi and Upsilon Mesons at HERA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0003020","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":"sha256:5f387b46b932d9de7fa0f63ff423c5266219832b7d6f80f9f418b6d4526fdfa5","target":"record","created_at":"2026-07-04T15:29:21Z","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":"7dad24008906f53155e9067539c962ca4fd75b462d11874e16283b5c4cee5918","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2000-03-16T07:22:35Z","title_canon_sha256":"6668fa3cf39b29f1dc065e5f0d6c6a45147af35470c7f6eaeda035a12df8233f"},"schema_version":"1.0","source":{"id":"hep-ex/0003020","kind":"arxiv","version":1}},"canonical_sha256":"87c14d73eae71c2c1707e5c4c7e7147ca38b20a4886d9b8efa1bf732c2d689db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87c14d73eae71c2c1707e5c4c7e7147ca38b20a4886d9b8efa1bf732c2d689db","first_computed_at":"2026-07-04T15:29:21.745023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:29:21.745023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/vaaGYwikYAMQYn7Oo3XkwtKE+FHLTWHz7DGiFcOknjnhHSs8MiGj+QUk4hjVdVkQgF47o1CPVi6tcAO4/JgCw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:29:21.745431Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/0003020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f387b46b932d9de7fa0f63ff423c5266219832b7d6f80f9f418b6d4526fdfa5","sha256:69e7a2c197eb847d25263e3f3235a844d13d5394bfead8a12de1c1ae248b34da"],"state_sha256":"8da3726cf457d77c5fe6bd872e1bd3f48e515704186dd8afa2202e59e0ee5a57"}