{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:TMKWJEWODGBBT7IJ2FX4LOQ53U","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":"0e0af4db06c6d52a888290266ade8fe5963dd304e1fa7ad2b7fac526e250a5ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-05-15T03:35:10Z","title_canon_sha256":"7eecef7d9788fc41133ce2652a22970f67498bd637e43113c32d331cc4ecb12c"},"schema_version":"1.0","source":{"id":"2505.09931","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.09931","created_at":"2026-07-05T11:03:30Z"},{"alias_kind":"arxiv_version","alias_value":"2505.09931v1","created_at":"2026-07-05T11:03:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.09931","created_at":"2026-07-05T11:03:30Z"},{"alias_kind":"pith_short_12","alias_value":"TMKWJEWODGBB","created_at":"2026-07-05T11:03:30Z"},{"alias_kind":"pith_short_16","alias_value":"TMKWJEWODGBBT7IJ","created_at":"2026-07-05T11:03:30Z"},{"alias_kind":"pith_short_8","alias_value":"TMKWJEWO","created_at":"2026-07-05T11:03:30Z"}],"graph_snapshots":[{"event_id":"sha256:e7e79754f02f7badb92ffc717ad81a69d9f00c1caac60a20048b042e57887691","target":"graph","created_at":"2026-07-05T11:03:30Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.09931/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the observation of quantum entanglement in $\\Lambda\\bar{\\Lambda}$ pairs produced via electron-positron annihilation, specifically through the decay $J/\\psi \\to \\Lambda\\bar{\\Lambda}$. By analyzing the angular correlations of the subsequent weak decays $\\Lambda \\to p\\pi^-$ and $\\bar{\\Lambda} \\to \\bar{p}\\pi^+$, we derive normalized observables $\\mathcal{O}_i~(i=0,1,\\ldots,4)$ that distinguish entangled states from separable ones. Theoretical predictions for these observables are established, with violations of separable-state bounds serving as unambiguous signatures of entanglement. Exp","authors_text":"Junle Pei, Tianjun Li, Xiaochuan Wang, Xiqing Hao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-05-15T03:35:10Z","title":"Observation of quantum entanglement in $\\Lambda \\bar{\\Lambda}$ pair production via electron-positron annihilation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.09931","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:b58301ca204c87f8bbeb9d171584a41606fdb6542760476e19ce2324bee76807","target":"record","created_at":"2026-07-05T11:03:30Z","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":"0e0af4db06c6d52a888290266ade8fe5963dd304e1fa7ad2b7fac526e250a5ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2025-05-15T03:35:10Z","title_canon_sha256":"7eecef7d9788fc41133ce2652a22970f67498bd637e43113c32d331cc4ecb12c"},"schema_version":"1.0","source":{"id":"2505.09931","kind":"arxiv","version":1}},"canonical_sha256":"9b156492ce198219fd09d16fc5ba1ddd021f988d244689ef9c5221c71fc1ad23","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b156492ce198219fd09d16fc5ba1ddd021f988d244689ef9c5221c71fc1ad23","first_computed_at":"2026-07-05T11:03:30.530529Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:03:30.530529Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t+HLAIFLUHfcfB+r115F8yGzc4RJCkIMo5p7a0qXSIBykEoD7uY8i3SQkiMUC3ASpGU+C7kotDMSUnqv4ZVUBg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:03:30.530961Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.09931","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b58301ca204c87f8bbeb9d171584a41606fdb6542760476e19ce2324bee76807","sha256:e7e79754f02f7badb92ffc717ad81a69d9f00c1caac60a20048b042e57887691"],"state_sha256":"2fdc9893c5259bb357ee587378d51c7d9f84b431d1232ece7150366a5e834397"}