{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:MJDFXCCIFF2MCQV3TCG2PFHAJC","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":"c56d1ae66fdfddd03f4128756c90387075976a5904d11de1a70f7cbc65191bf4","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"1999-12-24T16:44:11Z","title_canon_sha256":"389ed6bdacde9cfa08354fa9328342ebf1c03dbc8ef5fefebbbc11db560f9ba7"},"schema_version":"1.0","source":{"id":"hep-ex/9912062","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/9912062","created_at":"2026-07-04T15:29:27Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/9912062v1","created_at":"2026-07-04T15:29:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/9912062","created_at":"2026-07-04T15:29:27Z"},{"alias_kind":"pith_short_12","alias_value":"MJDFXCCIFF2M","created_at":"2026-07-04T15:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"MJDFXCCIFF2MCQV3","created_at":"2026-07-04T15:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"MJDFXCCI","created_at":"2026-07-04T15:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:5b6f686a61bf34359963b763ebbdd051a3db38ae57d11e7fa32daa7dbe09d045","target":"graph","created_at":"2026-07-04T15:29:27Z","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/hep-ex/9912062/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The E815 (NuTeV) neutrino experiment has performed a search for a 33.9 MeV/c^2 weakly-interacting neutral particle produced in pion decay. Such a particle may be responsible for an anomaly in the timing distribution of neutrino interactions in the KARMEN experiment. E815 has searched for this particle's decays in an instrumented decay region; no evidence for this particle was found. The search is sensitive to pion branching ratios as low as 10^-13.","authors_text":"A. Alton, A. Bodek, A. Romosan, A. Vaitaitis, B. T. Fleming, C. McNulty, D. A. Harris, D. Buchholz, D. Mason, D. Naples, E. D. Zimmerman, E. G. Stern, G .P. Zeller, H. Budd, H. M. Schellman, J. A. Formaggio, J. Brau, J. Goldman, J. H. Kim, J. M. Conrad, J. Yu, K. S. McFarland, L. Bugel, L. de Barbaro, M. Goncharov, M. H. Shaevitz, M. J. Lamm, M. Vakili, P. de Barbaro, P. Nienaber, P. Spentzouris, R. A. Johnson, R. B. Drucker, R. Frey, R. H. Bernstein, S. Avvakumov, S. Case, S. Koutsoliotas, T. Adams, T. Bolton, U. K. Yang, V. Wu, W. K. Sakumoto, W. Marsh","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"1999-12-24T16:44:11Z","title":"Search for a 33.9 MeV/c^2 Neutral Particle in Pion Decay"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9912062","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":"sha256:40e27ff50ef56ce8b0e8671b78e49c0481d4b9bb9c82c3f7eff30d0049b92dd9","target":"record","created_at":"2026-07-04T15:29:27Z","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":"c56d1ae66fdfddd03f4128756c90387075976a5904d11de1a70f7cbc65191bf4","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"1999-12-24T16:44:11Z","title_canon_sha256":"389ed6bdacde9cfa08354fa9328342ebf1c03dbc8ef5fefebbbc11db560f9ba7"},"schema_version":"1.0","source":{"id":"hep-ex/9912062","kind":"arxiv","version":1}},"canonical_sha256":"62465b88482974c142bb988da794e048b50a20b8b432e51200743d4c8f28a8f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62465b88482974c142bb988da794e048b50a20b8b432e51200743d4c8f28a8f1","first_computed_at":"2026-07-04T15:29:27.631188Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:29:27.631188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tTMANGmleeNMvWEDmbJ5xn2x5dhybGN8CU4YNS96O2hZ84USHYAK8m9z9HGPzBRRBaeOE10ewM4DTZY5wO/xDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:29:27.631641Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/9912062","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40e27ff50ef56ce8b0e8671b78e49c0481d4b9bb9c82c3f7eff30d0049b92dd9","sha256:5b6f686a61bf34359963b763ebbdd051a3db38ae57d11e7fa32daa7dbe09d045"],"state_sha256":"985a60420cbccc4be80e07f9ddfe24ebff1cc92ac0960e026c7cb66504523129"}