{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:WBAN43XPZZPQPOYJ6YQSH4VGOK","short_pith_number":"pith:WBAN43XP","canonical_record":{"source":{"id":"hep-ex/0404008","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"2004-04-07T15:29:44Z","cross_cats_sorted":[],"title_canon_sha256":"7e36d199950f1748ba6e7b10ba0ad36e32d9ecb51341ff37ccf8477a424d7259","abstract_canon_sha256":"799796f8760801eee61bf1d4f87dc33705adeaf7333b3da608fe328754570f27"},"schema_version":"1.0"},"canonical_sha256":"b040de6eefce5f07bb09f62123f2a6728cce8ced630c07f5c769bc883e62a2ae","source":{"kind":"arxiv","id":"hep-ex/0404008","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0404008","created_at":"2026-05-18T03:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0404008v1","created_at":"2026-05-18T03:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0404008","created_at":"2026-05-18T03:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"WBAN43XPZZPQ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"WBAN43XPZZPQPOYJ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"WBAN43XP","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:WBAN43XPZZPQPOYJ6YQSH4VGOK","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ex/0404008","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"2004-04-07T15:29:44Z","cross_cats_sorted":[],"title_canon_sha256":"7e36d199950f1748ba6e7b10ba0ad36e32d9ecb51341ff37ccf8477a424d7259","abstract_canon_sha256":"799796f8760801eee61bf1d4f87dc33705adeaf7333b3da608fe328754570f27"},"schema_version":"1.0"},"canonical_sha256":"b040de6eefce5f07bb09f62123f2a6728cce8ced630c07f5c769bc883e62a2ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:31.340133Z","signature_b64":"WlUiPGTHjW3jRn6+TRAPP4bQAemmcDtilFvhw7fsLKFKtzXlp3HJd3nQPZUYNT3GRAF8WouPQeId8cO3wZadDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b040de6eefce5f07bb09f62123f2a6728cce8ced630c07f5c769bc883e62a2ae","last_reissued_at":"2026-05-18T03:47:31.339384Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:31.339384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ex/0404008","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jajj8S82PEy/pSrsAG+9p2P4qoD8b43dzlwl8ybTrNKhpCIFuQhFd61FDPz41pK02iqJrwra1hxikDdh33+yDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:13:16.871445Z"},"content_sha256":"22020aac78957e163929cacae51d1136e1c2d597bc48e4524887d584a4a6f1ca","schema_version":"1.0","event_id":"sha256:22020aac78957e163929cacae51d1136e1c2d597bc48e4524887d584a4a6f1ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:WBAN43XPZZPQPOYJ6YQSH4VGOK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exclusive electroproduction of J/psi mesons at HERA","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"ZEUS Collaboration","submitted_at":"2004-04-07T15:29:44Z","abstract_excerpt":"The exclusive electroproduction of J/psi mesons, ep->epJ/psi, has been studied with the ZEUS detector at HERA for virtualities of the exchanged photon in the ranges 0.15<Q^2<0.8 GeV^2 and 2<Q^2<100 GeV^2 using integrated luminosities of 69 pb^-1 and 83 pb^-1, respectively.The photon-proton centre-of-mass energy was in the range 30<W<220 GeV and the squared four-momentum transfer at the proton vertex |t|<1.The cross sections and decay angular distributions are presented as functions of Q^2, W and t. The effective parameters of the Pomeron trajectory are in agreement with those found in J/psi ph"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0404008","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:47:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YDltXKoJ88xgD9S0smI86AnETziGv9bH2DrQU4DA/jekqBpEn4Rf8DdyxZFHyNcUojd0ndvvYZmOR3f1FtP2Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:13:16.871793Z"},"content_sha256":"22bf59191e8b4788127cef30293f17f795700ccba79483f8bf68481be368bdd6","schema_version":"1.0","event_id":"sha256:22bf59191e8b4788127cef30293f17f795700ccba79483f8bf68481be368bdd6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK/bundle.json","state_url":"https://pith.science/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T15:13:16Z","links":{"resolver":"https://pith.science/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK","bundle":"https://pith.science/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK/bundle.json","state":"https://pith.science/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WBAN43XPZZPQPOYJ6YQSH4VGOK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:WBAN43XPZZPQPOYJ6YQSH4VGOK","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":"799796f8760801eee61bf1d4f87dc33705adeaf7333b3da608fe328754570f27","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2004-04-07T15:29:44Z","title_canon_sha256":"7e36d199950f1748ba6e7b10ba0ad36e32d9ecb51341ff37ccf8477a424d7259"},"schema_version":"1.0","source":{"id":"hep-ex/0404008","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0404008","created_at":"2026-05-18T03:47:31Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0404008v1","created_at":"2026-05-18T03:47:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0404008","created_at":"2026-05-18T03:47:31Z"},{"alias_kind":"pith_short_12","alias_value":"WBAN43XPZZPQ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"WBAN43XPZZPQPOYJ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"WBAN43XP","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:22bf59191e8b4788127cef30293f17f795700ccba79483f8bf68481be368bdd6","target":"graph","created_at":"2026-05-18T03:47:31Z","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":"The exclusive electroproduction of J/psi mesons, ep->epJ/psi, has been studied with the ZEUS detector at HERA for virtualities of the exchanged photon in the ranges 0.15<Q^2<0.8 GeV^2 and 2<Q^2<100 GeV^2 using integrated luminosities of 69 pb^-1 and 83 pb^-1, respectively.The photon-proton centre-of-mass energy was in the range 30<W<220 GeV and the squared four-momentum transfer at the proton vertex |t|<1.The cross sections and decay angular distributions are presented as functions of Q^2, W and t. The effective parameters of the Pomeron trajectory are in agreement with those found in J/psi ph","authors_text":"ZEUS Collaboration","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"2004-04-07T15:29:44Z","title":"Exclusive electroproduction of J/psi mesons at HERA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0404008","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":"sha256:22020aac78957e163929cacae51d1136e1c2d597bc48e4524887d584a4a6f1ca","target":"record","created_at":"2026-05-18T03:47:31Z","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":"799796f8760801eee61bf1d4f87dc33705adeaf7333b3da608fe328754570f27","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2004-04-07T15:29:44Z","title_canon_sha256":"7e36d199950f1748ba6e7b10ba0ad36e32d9ecb51341ff37ccf8477a424d7259"},"schema_version":"1.0","source":{"id":"hep-ex/0404008","kind":"arxiv","version":1}},"canonical_sha256":"b040de6eefce5f07bb09f62123f2a6728cce8ced630c07f5c769bc883e62a2ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b040de6eefce5f07bb09f62123f2a6728cce8ced630c07f5c769bc883e62a2ae","first_computed_at":"2026-05-18T03:47:31.339384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:47:31.339384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WlUiPGTHjW3jRn6+TRAPP4bQAemmcDtilFvhw7fsLKFKtzXlp3HJd3nQPZUYNT3GRAF8WouPQeId8cO3wZadDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:47:31.340133Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/0404008","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22020aac78957e163929cacae51d1136e1c2d597bc48e4524887d584a4a6f1ca","sha256:22bf59191e8b4788127cef30293f17f795700ccba79483f8bf68481be368bdd6"],"state_sha256":"7298f9746b2cea38591b9da29de89b4de9e7ce29aef389ae1813b16a0dd9b9e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KwqaVHHULTzcw7x3I5fLQkQLSlaxeIp7PIEQHvp0ljlJ/1grv2rkuq01sQ1yI7AXwYJxfr28y7r6TlUgVIjZBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:13:16.873738Z","bundle_sha256":"ab677c8cbcba89dfd8913f2e5a0164f3e391640627d2564cc1fafe21bcfe7e95"}}