{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:4MEELXY7Q4V6AV2BHJM6VTWHHT","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":"26f76cf5683bd2f7212074e3dbc23dc6cf1c4f8d1ce457e585ab0cc0219d57ac","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-04-30T13:28:51Z","title_canon_sha256":"8d303a1cd31fef9378bae0808e474b9f494a343b23a2b0a56d277013432e5678"},"schema_version":"1.0","source":{"id":"hep-ph/0204351","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0204351","created_at":"2026-05-18T01:06:14Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0204351v2","created_at":"2026-05-18T01:06:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0204351","created_at":"2026-05-18T01:06:14Z"},{"alias_kind":"pith_short_12","alias_value":"4MEELXY7Q4V6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"4MEELXY7Q4V6AV2B","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"4MEELXY7","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:0496e5b70ed28d4fa34706350ea555a3c1b7d4221afc2e6bb55392aa8d58d901","target":"graph","created_at":"2026-05-18T01:06:14Z","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":"In this talk I will consider the possibility of distinguish the usual three neutrino model from scenarios in which a light sterile neutrino is also present. I will show that the confusion with the so-called 3+1 scheme can arise in some particular region of the parameter space whereas it is essentially absent for the 2+2 scheme.\n Then I will discuss the ambiguities in the determination of the CP-violating phase $\\delta$.","authors_text":"D. Meloni","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2002-04-30T13:28:51Z","title":"Telling three from four neutrino scenarios"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0204351","kind":"arxiv","version":2},"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":"sha256:1beeb135138497a4a38c870accb2680d76a98c97a3bb19d93f8fc987f4f974fa","target":"record","created_at":"2026-05-18T01:06:14Z","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":"26f76cf5683bd2f7212074e3dbc23dc6cf1c4f8d1ce457e585ab0cc0219d57ac","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-04-30T13:28:51Z","title_canon_sha256":"8d303a1cd31fef9378bae0808e474b9f494a343b23a2b0a56d277013432e5678"},"schema_version":"1.0","source":{"id":"hep-ph/0204351","kind":"arxiv","version":2}},"canonical_sha256":"e30845df1f872be057413a59eacec73ce5d3edf896a77b1046ff336881574cdb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e30845df1f872be057413a59eacec73ce5d3edf896a77b1046ff336881574cdb","first_computed_at":"2026-05-18T01:06:14.210601Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:14.210601Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JE73RS7rs4TjgTzgzCJ5hzFSBSKcaCZsYEM6L5T1YF6Hza5j/oi3oVID46GDFVdmDjnbN4t/HEEpSNOb6tgfBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:14.211188Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0204351","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1beeb135138497a4a38c870accb2680d76a98c97a3bb19d93f8fc987f4f974fa","sha256:0496e5b70ed28d4fa34706350ea555a3c1b7d4221afc2e6bb55392aa8d58d901"],"state_sha256":"bc1569ec0ffe73e2d000ec9f688cd7ce49fe0f9331073b956c6759d045d6cbbe"}