{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:6XSOYK5Y5ZJTIRAIMHLCGLBPLV","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":"3bac0854d2dd9988f04996dd7bc0dc44762ec6f33b18939ef31e0ffdafffb9c0","cross_cats_sorted":["astro-ph"],"license":"","primary_cat":"hep-ph","submitted_at":"1995-03-10T21:43:33Z","title_canon_sha256":"5c2dd0fc950315c81a301c39e080fc37a0867dbfff3069d360e3585496031366"},"schema_version":"1.0","source":{"id":"hep-ph/9503295","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9503295","created_at":"2026-07-04T15:50:51Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9503295v4","created_at":"2026-07-04T15:50:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9503295","created_at":"2026-07-04T15:50:51Z"},{"alias_kind":"pith_short_12","alias_value":"6XSOYK5Y5ZJT","created_at":"2026-07-04T15:50:51Z"},{"alias_kind":"pith_short_16","alias_value":"6XSOYK5Y5ZJTIRAI","created_at":"2026-07-04T15:50:51Z"},{"alias_kind":"pith_short_8","alias_value":"6XSOYK5Y","created_at":"2026-07-04T15:50:51Z"}],"graph_snapshots":[{"event_id":"sha256:d7379aceb3566aef88a6ca1252e03912469c3fed0788291e92911519670a0b72","target":"graph","created_at":"2026-07-04T15:50:51Z","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-ph/9503295/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A recently reported anomaly in the time structure of signals in the KARMEN neutrino detector suggests the decay of a new particle $x$, produced in $\\pi^+ \\to \\mu^+ x$ with mass $m_x=33.9$ MeV. We discuss the constraints and difficulties in interpreting $x$ as a neutrino. We show that a mainly-sterile neutrino scenario is compatible with all laboratory constraints, within narrow limits on the mixing parameters, although there are problems with astrophysical and cosmological constraints. This scenario predicts that appreciable numbers of other $x$-decay events with different origins and time str","authors_text":"R.J.N. Phillips (RAL), S. Sarkar (Oxford), V. Barger (Wisconsin)","cross_cats":["astro-ph"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1995-03-10T21:43:33Z","title":"Remarks on the KARMEN Anomaly"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9503295","kind":"arxiv","version":4},"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":"sha256:6ae369f1968f5f5089a5262327c6932bc3c1172ce0f2c4fa166468425a101d8b","target":"record","created_at":"2026-07-04T15:50:51Z","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":"3bac0854d2dd9988f04996dd7bc0dc44762ec6f33b18939ef31e0ffdafffb9c0","cross_cats_sorted":["astro-ph"],"license":"","primary_cat":"hep-ph","submitted_at":"1995-03-10T21:43:33Z","title_canon_sha256":"5c2dd0fc950315c81a301c39e080fc37a0867dbfff3069d360e3585496031366"},"schema_version":"1.0","source":{"id":"hep-ph/9503295","kind":"arxiv","version":4}},"canonical_sha256":"f5e4ec2bb8ee5334440861d6232c2f5d63b295ea557e4de77bc74596e6c4d45b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5e4ec2bb8ee5334440861d6232c2f5d63b295ea557e4de77bc74596e6c4d45b","first_computed_at":"2026-07-04T15:50:51.147249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:50:51.147249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cdBF6Lb7rZWFIje0VAnTwC39Uy3nfl+07WB3esFaMfBBdHUcKlwjg/V3g62xcEzeJufOxoGyyglbOEZVbKMqCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:50:51.147663Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9503295","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ae369f1968f5f5089a5262327c6932bc3c1172ce0f2c4fa166468425a101d8b","sha256:d7379aceb3566aef88a6ca1252e03912469c3fed0788291e92911519670a0b72"],"state_sha256":"8d4a9c5ad72c6328816a7012681afc1ea18ee2a9589a4db5a3597f130562587d"}