{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:5ZFWYHADUYSA5E3W24LKVFIENR","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":"2e7279414d28d90820a129b1f3525a0b34ff81d2f2a6b25fbc1d1d1ed370f99a","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2005-07-18T15:39:45Z","title_canon_sha256":"5afddc7c2e52a5e62e771d32a4fac1a6d0a2a67112c8c921b27c136da63896e8"},"schema_version":"1.0","source":{"id":"hep-ex/0507078","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0507078","created_at":"2026-05-18T03:47:30Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0507078v1","created_at":"2026-05-18T03:47:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0507078","created_at":"2026-05-18T03:47:30Z"},{"alias_kind":"pith_short_12","alias_value":"5ZFWYHADUYSA","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"5ZFWYHADUYSA5E3W","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"5ZFWYHAD","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:76916ff3d3c59bbe151fe4928d00ad9dba37aa5afc4837226ba2d8ed3226b4cf","target":"graph","created_at":"2026-05-18T03:47:30Z","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 evolution of the electromagnetic coupling, alpha, in the momentum-transfer range 1800GeV^2 < -Q^2 < 21600GeV^2 is studied with about 40000 Bhabha-scattering events collected with the L3 detector at LEP at centre-of-mass energies 189-209GeV. The running of alpha is parametrised as: alpha(Q^2) = alpha_0/(1-C Delta alpha(Q^2)), where alpha_0=\\alpha(Q^2=0) is the fine-structure constant and C=1 corresponds to the evolution expected in QED. A fit to the differential cross section of the e+e- ->e+e- process for scattering angles in the range |cos theta|<0.9 excludes the hypothesis of a constant ","authors_text":"L3 Collaboration","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"2005-07-18T15:39:45Z","title":"Measurement of the Running of the Electromagnetic Coupling at Large Momentum-Transfer at LEP"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0507078","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":"sha256:45ca1977c89cace1bb3f9d75823b52a0dfa0cc6b010d8bbc1ae9b22b9f2e21ea","target":"record","created_at":"2026-05-18T03:47:30Z","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":"2e7279414d28d90820a129b1f3525a0b34ff81d2f2a6b25fbc1d1d1ed370f99a","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2005-07-18T15:39:45Z","title_canon_sha256":"5afddc7c2e52a5e62e771d32a4fac1a6d0a2a67112c8c921b27c136da63896e8"},"schema_version":"1.0","source":{"id":"hep-ex/0507078","kind":"arxiv","version":1}},"canonical_sha256":"ee4b6c1c03a6240e9376d716aa95046c7dad2ba937b669c3c5861c08e04fd855","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ee4b6c1c03a6240e9376d716aa95046c7dad2ba937b669c3c5861c08e04fd855","first_computed_at":"2026-05-18T03:47:30.435244Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:47:30.435244Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9qWa8HMVN/Tz7JUsgpU9hrcOrqwwzT2X3criJ+/i53NjxlXr7sXzjy4U/aMHwQVTEUTL7nQDpUof+D2jY3wpAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:47:30.435684Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/0507078","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:45ca1977c89cace1bb3f9d75823b52a0dfa0cc6b010d8bbc1ae9b22b9f2e21ea","sha256:76916ff3d3c59bbe151fe4928d00ad9dba37aa5afc4837226ba2d8ed3226b4cf"],"state_sha256":"9963dd1f193a4c230e59ec6d0190528b270fe133e89f2d96e515db01d189843c"}