{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:O3KTTZ2FZ7PS3IGCDQRMLJXZL4","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":"7c10c9c407593c8eaee7e1a08017cd0561b1b8cfd341d0a97c3eedeba492d8bb","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-05-10T08:47:31Z","title_canon_sha256":"b524a89004bf9fed586fff4af3b3da1d97b0280fc5dfc2a14b4459c608ae22bc"},"schema_version":"1.0","source":{"id":"1205.2198","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2198","created_at":"2026-05-18T01:57:34Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2198v2","created_at":"2026-05-18T01:57:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2198","created_at":"2026-05-18T01:57:34Z"},{"alias_kind":"pith_short_12","alias_value":"O3KTTZ2FZ7PS","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"O3KTTZ2FZ7PS3IGC","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"O3KTTZ2F","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:d360dd2f2f9bdde8a935c007233b5142fcf47a3fbcc11aeaa6bf70dd72bedc9a","target":"graph","created_at":"2026-05-18T01:57:34Z","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":"We discuss the seesaw mechanism which includes the minimum number of parameters for successful leptogenesis and three neutrino oscillations in the spirit of Occam's razor. We show that models with two right-handed neutrinos with two texture zeros supported by Occam's razor cannot fit the observed neutrino parameters consistently for the normal light neutrino mass hierarchy. For the inverted light neutrino mass hierarchy, on the other hand, we find that the models can fit the observed neutrino parameters consistently. Besides, we show that the model predicts the maximal Dirac CP-phase of the ne","authors_text":"Keisuke Harigaya, Masahiro Ibe, Tsutomu T. Yanagida","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-05-10T08:47:31Z","title":"Seesaw Mechanism with Occam's Razor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2198","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":"sha256:620e513156703c787b9600b569051e07a9a044af6417e535ad1f12827b4eef9a","target":"record","created_at":"2026-05-18T01:57:34Z","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":"7c10c9c407593c8eaee7e1a08017cd0561b1b8cfd341d0a97c3eedeba492d8bb","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-05-10T08:47:31Z","title_canon_sha256":"b524a89004bf9fed586fff4af3b3da1d97b0280fc5dfc2a14b4459c608ae22bc"},"schema_version":"1.0","source":{"id":"1205.2198","kind":"arxiv","version":2}},"canonical_sha256":"76d539e745cfdf2da0c21c22c5a6f95f0dc409c7bc07d21ec646b0c878f2e525","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76d539e745cfdf2da0c21c22c5a6f95f0dc409c7bc07d21ec646b0c878f2e525","first_computed_at":"2026-05-18T01:57:34.057415Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:34.057415Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J9FDbX2dqgAT57VE3TDDPqT/2DclCG4dFeRrHpWF8MCEpcNxTcJFGQxc2X7gD1FiplF8Ic0qhXQpPxmmY6AbDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:34.057896Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.2198","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:620e513156703c787b9600b569051e07a9a044af6417e535ad1f12827b4eef9a","sha256:d360dd2f2f9bdde8a935c007233b5142fcf47a3fbcc11aeaa6bf70dd72bedc9a"],"state_sha256":"cdbe12771833fc60638cdc04708ce3e5421805f0622450f6625d358823f8a67c"}