{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:MB62GABTIRFN7ZJRDTNGVMYJAW","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":"8c53aae43ea11a7766b3e51c15afc748c8c560527bd2909801544a5f2e34ab78","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"hep-ex","submitted_at":"1995-04-11T14:38:56Z","title_canon_sha256":"6e0c52d286f470041f754c6eb8bcc6cf48ab939f65f342910917420d3a8d8df3"},"schema_version":"1.0","source":{"id":"hep-ex/9504003","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/9504003","created_at":"2026-05-18T04:38:06Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/9504003v1","created_at":"2026-05-18T04:38:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/9504003","created_at":"2026-05-18T04:38:06Z"},{"alias_kind":"pith_short_12","alias_value":"MB62GABTIRFN","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"MB62GABTIRFN7ZJR","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"MB62GABT","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:9d5a6abb79e49f10dcbf1f2e5d007fa599afc396ffeae8aac66e922810233215","target":"graph","created_at":"2026-05-18T04:38:06Z","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":"A precise measurement of the spectrum of the photons from $ep$ bremsstrahlung with the ZEUS luminosity monitor at HERA is reported. The measurement shows a reduced rate compared to the Bethe-Heitler spectrum for photon energies below 5~GeV. This suppression, called the beam-size effect, is explained by the finite transverse size of the beam overlap relative to the typical impact parameter in the process of $ep$ bremsstrahlung at HERA energies.","authors_text":"Krzysztof Piotrzkowski","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"1995-04-11T14:38:56Z","title":"Observation of the beam-size effect at HERA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9504003","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":"sha256:36f17e6c2605cf0299e25200e0fa1b913fe3f296a81d811e2a4149c055bf1d70","target":"record","created_at":"2026-05-18T04:38:06Z","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":"8c53aae43ea11a7766b3e51c15afc748c8c560527bd2909801544a5f2e34ab78","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"hep-ex","submitted_at":"1995-04-11T14:38:56Z","title_canon_sha256":"6e0c52d286f470041f754c6eb8bcc6cf48ab939f65f342910917420d3a8d8df3"},"schema_version":"1.0","source":{"id":"hep-ex/9504003","kind":"arxiv","version":1}},"canonical_sha256":"607da30033444adfe5311cda6ab3090580c9ab1cf28ac4bee6eed5a477732c94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"607da30033444adfe5311cda6ab3090580c9ab1cf28ac4bee6eed5a477732c94","first_computed_at":"2026-05-18T04:38:06.775395Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:06.775395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mxIENFhrXL1AVdaMHwyqmQBnSXJKhHxCWUrQzy/WanmEnLKs0LPSuNa10Xjt/1tuhekG4yvMKLyuc+zK48SgBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:06.776081Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/9504003","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36f17e6c2605cf0299e25200e0fa1b913fe3f296a81d811e2a4149c055bf1d70","sha256:9d5a6abb79e49f10dcbf1f2e5d007fa599afc396ffeae8aac66e922810233215"],"state_sha256":"b9fa37a27c9493013844631b4b25188ea2be17877aa02206311993657071f0c3"}