{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:LG4VEHAQW2W37B3LDLQSBF6OGM","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":"6636754906f1e98fffe346d6b7b8292e7b6497c755f161f657082af2fee20f16","cross_cats_sorted":["hep-ex","hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-12-30T20:49:24Z","title_canon_sha256":"580cd2ffc9bfa7d793d406033c36886d3a9713185490a43125a27d2034447c25"},"schema_version":"1.0","source":{"id":"0912.5526","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0912.5526","created_at":"2026-05-18T04:38:48Z"},{"alias_kind":"arxiv_version","alias_value":"0912.5526v2","created_at":"2026-05-18T04:38:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0912.5526","created_at":"2026-05-18T04:38:48Z"},{"alias_kind":"pith_short_12","alias_value":"LG4VEHAQW2W3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"LG4VEHAQW2W37B3L","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"LG4VEHAQ","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:76f35af0582b15a7ab2ec5588899b311e6476b9a0ee355c706d509c56adcd72f","target":"graph","created_at":"2026-05-18T04:38:48Z","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":"PHENIX and STAR data on the intercept parameter of the two-pion Bose-Einstein correlation functions in sqrt(s_{NN}) = 200 GeV Au+Au collisions are analyzed in terms of different models of hadronic multiplicities. To describe this combined PHENIX and STAR dataset, an in-medium eta' mass reduction of at least 200 MeV is needed, at the 99.9 % confidence level in the considered model class. Such a significant eta' mass modification may indicate the restoration of the U_A(1) symmetry in a hot and dense hadronic matter and the return of the 9th \"prodigal\" Goldstone boson.","authors_text":"J. Sziklai (Mta Kfki Rmki), MTA KFKI RMKI), R. Vertesi (Mta Kfki Rmki), T. Csorgo (Harvard University","cross_cats":["hep-ex","hep-ph","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-12-30T20:49:24Z","title":"Indirect observation of an in-medium eta' mass reduction in sqrt(s_{NN})=200 GeV Au+Au collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.5526","kind":"arxiv","version":2},"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:f6a4410845082855736c2c015aea01eec46e0c6298f8758cd6c0fe56f92a4916","target":"record","created_at":"2026-05-18T04:38:48Z","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":"6636754906f1e98fffe346d6b7b8292e7b6497c755f161f657082af2fee20f16","cross_cats_sorted":["hep-ex","hep-ph","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-12-30T20:49:24Z","title_canon_sha256":"580cd2ffc9bfa7d793d406033c36886d3a9713185490a43125a27d2034447c25"},"schema_version":"1.0","source":{"id":"0912.5526","kind":"arxiv","version":2}},"canonical_sha256":"59b9521c10b6adbf876b1ae12097ce33309151360b0fca47314e3932a686801d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59b9521c10b6adbf876b1ae12097ce33309151360b0fca47314e3932a686801d","first_computed_at":"2026-05-18T04:38:48.553304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:48.553304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l1AR2H4GGTTXFkCAu4GXaZCGur8pbp/IyCSGvyojFQBPQdDhSRGUYRGkN09k+cofZaCqpiin7N8nty6MYZnbBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:48.553749Z","signed_message":"canonical_sha256_bytes"},"source_id":"0912.5526","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6a4410845082855736c2c015aea01eec46e0c6298f8758cd6c0fe56f92a4916","sha256:76f35af0582b15a7ab2ec5588899b311e6476b9a0ee355c706d509c56adcd72f"],"state_sha256":"5bc7e9ea49e200983293985f35ff3d1690fbf84f06817b4deca476a7bec6e6f3"}