{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:PE4YPPKAS2L4TH7MMEIAVEN3QQ","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":"01d09362492a0c9d38e60fdef78343ac3399da3ae1f061285e2af94b1ebfcfa4","cross_cats_sorted":["astro-ph"],"license":"","primary_cat":"hep-ph","submitted_at":"1999-12-22T16:16:59Z","title_canon_sha256":"df4ebbc0da4c8ca3da4056c0400c86441b6883a660c18cf02a5751c910f6af5a"},"schema_version":"1.0","source":{"id":"hep-ph/9912471","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9912471","created_at":"2026-05-18T02:36:21Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9912471v2","created_at":"2026-05-18T02:36:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9912471","created_at":"2026-05-18T02:36:21Z"},{"alias_kind":"pith_short_12","alias_value":"PE4YPPKAS2L4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"PE4YPPKAS2L4TH7M","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"PE4YPPKA","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:c4a9bd6cea035f1a7147a8362cd458e628e48c6226408219e29b9fe273133b98","target":"graph","created_at":"2026-05-18T02:36:21Z","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 propose a new mechanism producing a non-vanishing lepton number asymmetry, based on decays of heavy Majorana neutrinos. If they are produced out of equilibrium, as occurs in preheating scenario, and are superpositions of mass eigenstates rapidly decaying, their decay rates contains interference terms provided the mass differences $\\Delta m$ are small compared to widths $\\Gamma$. The resulting lepton asymmetry, which is the analogue of the time-integrated CP asymmetry in $B^0-\\bar{B}^0$ system, is found to be proportional to $\\Delta m/\\Gamma$.","authors_text":"G.Mangano, G. Miele","cross_cats":["astro-ph"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1999-12-22T16:16:59Z","title":"Unstable Heavy Majorana Neutrinos and Leptogenesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9912471","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":"sha256:20547b97c26769fe43610c791123a6bc2707563d9de3bf26e7899795032cc92f","target":"record","created_at":"2026-05-18T02:36:21Z","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":"01d09362492a0c9d38e60fdef78343ac3399da3ae1f061285e2af94b1ebfcfa4","cross_cats_sorted":["astro-ph"],"license":"","primary_cat":"hep-ph","submitted_at":"1999-12-22T16:16:59Z","title_canon_sha256":"df4ebbc0da4c8ca3da4056c0400c86441b6883a660c18cf02a5751c910f6af5a"},"schema_version":"1.0","source":{"id":"hep-ph/9912471","kind":"arxiv","version":2}},"canonical_sha256":"793987bd409697c99fec61100a91bb84392d6f3488ea217e3fc80bd58bc6b118","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"793987bd409697c99fec61100a91bb84392d6f3488ea217e3fc80bd58bc6b118","first_computed_at":"2026-05-18T02:36:21.428077Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:36:21.428077Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WiMgeF89TyyI7YMYg2RciClACvF4aUYlBy+gBpd8fdQHhiXP0OLQZLxtH/VgFMe0AkqGjLZYc5BXFQYgcDHnAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:36:21.428751Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9912471","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:20547b97c26769fe43610c791123a6bc2707563d9de3bf26e7899795032cc92f","sha256:c4a9bd6cea035f1a7147a8362cd458e628e48c6226408219e29b9fe273133b98"],"state_sha256":"f04df53fbb1f55ff53a80d13f8cfb9b11024db6b8845def5aa4ed3b2df0604d6"}