{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZA5U6YDGZQSIBWFW5JPRR6VHWM","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":"bbcf4d52a4598d2dd4339d34f15022bb7ee3a59ed8ac97611459df043f46863d","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-19T13:24:30Z","title_canon_sha256":"40ade4254d3a91397bfc04a9e6540773b60b65e6c50051910495165cd4ac6acd"},"schema_version":"1.0","source":{"id":"1804.07148","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07148","created_at":"2026-05-18T00:18:01Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07148v1","created_at":"2026-05-18T00:18:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07148","created_at":"2026-05-18T00:18:01Z"},{"alias_kind":"pith_short_12","alias_value":"ZA5U6YDGZQSI","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"ZA5U6YDGZQSIBWFW","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"ZA5U6YDG","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:d5d27d433141a31a2de7bef3c95416d5acf728353b0381acf04b3636a847c5e5","target":"graph","created_at":"2026-05-18T00:18:01Z","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 article reports on the feasibility of testing of the symmetry under reversal in time in a purely leptonic system constituted by positronium atoms using the J-PET detector. The present state of T symmetry tests is discussed with an emphasis on the scarcely explored sector of leptonic systems. Two possible strategies of searching for manifestations of T violation in non-vanishing angular correlations of final state observables in the decays of metastable triplet states of positronium available with J-PET are proposed and discussed. Results of a pilot measurement with J-PET and assessment of","authors_text":"A. Gajos, B. C. Hiesmayr, B. Jasi\\'nska, B. Zgardzi\\'nska, C. Curceanu, D. Kisielewska, E. Czerwi\\'nski, E. Kubicz, G. Korcyl, J. Raj, K. Dulski, K. Kacprzak, {\\L}. Kap{\\l}on, L. Raczy\\'nski, M. Gorgol, M. Mohammed, M. Pa{\\l}ka, M. Pawlik-Nied\\'zwiecka, M. Silarski, M. Skurzok, M. Zieli\\'nski, N. Gupta-Sharma, P. Kowalski, P. Moskal, R. Shopa, Shivani, S. Sharma, Sz. Nied\\'zwiecki, T. Kozik, W. Krzemie\\'n, W. Wi\\'slicki, Z. Rudy","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-19T13:24:30Z","title":"Feasibility study of the time reversal symmetry tests in decays of metastable positronium atoms with the J-PET detector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07148","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":"sha256:361bb9748791bcbdea4259ae93832c1cf6352f25a5685e3df5578b3c0a6f08e7","target":"record","created_at":"2026-05-18T00:18:01Z","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":"bbcf4d52a4598d2dd4339d34f15022bb7ee3a59ed8ac97611459df043f46863d","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-04-19T13:24:30Z","title_canon_sha256":"40ade4254d3a91397bfc04a9e6540773b60b65e6c50051910495165cd4ac6acd"},"schema_version":"1.0","source":{"id":"1804.07148","kind":"arxiv","version":1}},"canonical_sha256":"c83b4f6066cc2480d8b6ea5f18faa7b30e5f27269210a025f4866a55e8dfca68","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c83b4f6066cc2480d8b6ea5f18faa7b30e5f27269210a025f4866a55e8dfca68","first_computed_at":"2026-05-18T00:18:01.283133Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:01.283133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vsMdBpwz3XYYPQpJ5Jewd2oAjm2IwzjPoGvNwxH6lcrZWr4p9YIOMAgC5gPUVJMJsCvkXrjIx/xCuRErsiCKAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:01.283839Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.07148","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:361bb9748791bcbdea4259ae93832c1cf6352f25a5685e3df5578b3c0a6f08e7","sha256:d5d27d433141a31a2de7bef3c95416d5acf728353b0381acf04b3636a847c5e5"],"state_sha256":"b498ebb1663b6d3dc1ca8858db919bce89bf60e70b3aa74f116304d82f66a200"}