{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HMNZEKRDJQHPX2FJIWLWLS5ZBD","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":"46d8856d791800fe283e00921a74bd314b9b6361d800c40a149194e444f380e4","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2018-06-22T14:52:04Z","title_canon_sha256":"6613df9900d94711e08dcfa38198f5aef6be73f7db8980131a3492ae0da1bbae"},"schema_version":"1.0","source":{"id":"1806.08708","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.08708","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"arxiv_version","alias_value":"1806.08708v1","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.08708","created_at":"2026-05-17T23:59:52Z"},{"alias_kind":"pith_short_12","alias_value":"HMNZEKRDJQHP","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HMNZEKRDJQHPX2FJ","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HMNZEKRD","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:b642091d1553d36afc65b2541dae7f30e3dd4301b015aa146e00e0a672362a9d","target":"graph","created_at":"2026-05-17T23:59:52Z","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":"This Letter presents a measurement of $\\gamma \\gamma \\rightarrow \\mu^{+} \\mu^{-}$ production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at $\\sqrt{s_{\\mathrm{NN}}}=5.02$ TeV with an integrated luminosity of 0.49 nb$^{-1}$. The azimuthal angle and transverse momentum correlations between the muons are measured as a function of collision centrality. The muon pairs are produced from $\\gamma \\gamma$ through the interaction of the large electromagnetic fields of the nuclei. The contribution from background sources of muon pairs is removed using a template fit met","authors_text":"ATLAS Collaboration","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2018-06-22T14:52:04Z","title":"Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02$ TeV with the ATLAS detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.08708","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":"sha256:40c4c4ab96e59839c870fa39a094aab011a9bfc2bdfe998f26a9b517d88a788c","target":"record","created_at":"2026-05-17T23:59:52Z","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":"46d8856d791800fe283e00921a74bd314b9b6361d800c40a149194e444f380e4","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2018-06-22T14:52:04Z","title_canon_sha256":"6613df9900d94711e08dcfa38198f5aef6be73f7db8980131a3492ae0da1bbae"},"schema_version":"1.0","source":{"id":"1806.08708","kind":"arxiv","version":1}},"canonical_sha256":"3b1b922a234c0efbe8a9459765cbb908d0c27d9d2bf4a943dda79a7aa617645b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b1b922a234c0efbe8a9459765cbb908d0c27d9d2bf4a943dda79a7aa617645b","first_computed_at":"2026-05-17T23:59:52.459152Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:52.459152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y89Fg/uumzZrQAJVXXhN4gyjYCwGNMWgDWqiYP2Nsxsm3paxh+wQpsdwqwSuSj/w4RhbQcYFrC978qhkRvMpAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:52.459707Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.08708","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40c4c4ab96e59839c870fa39a094aab011a9bfc2bdfe998f26a9b517d88a788c","sha256:b642091d1553d36afc65b2541dae7f30e3dd4301b015aa146e00e0a672362a9d"],"state_sha256":"77b7238996cc16672eb214c48ca03353156119ddb969aebcc6f3f0a53ae5bee6"}