{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:YJ3NSLMQLKE63JEGYKB5P25DFA","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":"54a6af9171e6e3040b732ae0dd9e05e94d7a12088f0f7f02fdb092d188759042","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2023-08-14T19:00:50Z","title_canon_sha256":"4ac565987c902d1ab332c4c9769f01574dd3623c02176d23de33f252f11a0fee"},"schema_version":"1.0","source":{"id":"2308.07412","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.07412","created_at":"2026-07-05T07:26:16Z"},{"alias_kind":"arxiv_version","alias_value":"2308.07412v3","created_at":"2026-07-05T07:26:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.07412","created_at":"2026-07-05T07:26:16Z"},{"alias_kind":"pith_short_12","alias_value":"YJ3NSLMQLKE6","created_at":"2026-07-05T07:26:16Z"},{"alias_kind":"pith_short_16","alias_value":"YJ3NSLMQLKE63JEG","created_at":"2026-07-05T07:26:16Z"},{"alias_kind":"pith_short_8","alias_value":"YJ3NSLMQ","created_at":"2026-07-05T07:26:16Z"}],"graph_snapshots":[{"event_id":"sha256:e7a6728b4df8fd802b516c14406e0e951ccf42c2cd174cb712661ad8caf8965b","target":"graph","created_at":"2026-07-05T07:26:16Z","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/2308.07412/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider a pair of unstable fermions in a spin-entangled state. After the decay of one fermion, a spin measurement is performed on the surviving partner, with a Stern-Gerlach experiment or similar. The measurement not only projects the spin of the surviving fermion, but is also physically equivalent to a spin projection for the decayed one -- even when it no longer exists. This post-selection effect would be experimentally accessible using muon pairs in a maximally-entangled state, produced either in the decay of a scalar particle, or in $e^+ e^-$ collisions at wide angles.","authors_text":"J. A. Aguilar-Saavedra","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2023-08-14T19:00:50Z","title":"Decay of entangled fermion pairs with post-selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.07412","kind":"arxiv","version":3},"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:b6aa0c3f6867df8e5ba6cfcdfb272c1b0f67a08d2b82fbd1e1a3f091209739b5","target":"record","created_at":"2026-07-05T07:26:16Z","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":"54a6af9171e6e3040b732ae0dd9e05e94d7a12088f0f7f02fdb092d188759042","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2023-08-14T19:00:50Z","title_canon_sha256":"4ac565987c902d1ab332c4c9769f01574dd3623c02176d23de33f252f11a0fee"},"schema_version":"1.0","source":{"id":"2308.07412","kind":"arxiv","version":3}},"canonical_sha256":"c276d92d905a89eda486c283d7eba328314525195471511176d6a686b06bc7d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c276d92d905a89eda486c283d7eba328314525195471511176d6a686b06bc7d4","first_computed_at":"2026-07-05T07:26:16.275386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:26:16.275386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"39YaespYf8LJ0izMhpH+qnAwK1dwnriuBg2JxensP1oiTie9W6V52HKkVyjFAmj0pJNX6qTyUg1RsHWcPoTdCg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:26:16.275859Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.07412","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b6aa0c3f6867df8e5ba6cfcdfb272c1b0f67a08d2b82fbd1e1a3f091209739b5","sha256:e7a6728b4df8fd802b516c14406e0e951ccf42c2cd174cb712661ad8caf8965b"],"state_sha256":"b6186934c6c1bae82ccac7293e252f6bde3cde15d1f1ea36934e44c8a021fafc"}