{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:T42V3WMADJ6YYMD4PMQC33N5RH","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":"a7ef6140c487975884225c5570303b23b0f515b34b162f834f5682159121e3fa","cross_cats_sorted":["astro-ph.CO","hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T18:00:28Z","title_canon_sha256":"98698cc59eeb9c272959bc08d062cc4e17795e3de0eb6bc93a4fd4d7dbf7f26a"},"schema_version":"1.0","source":{"id":"2410.07343","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.07343","created_at":"2026-07-05T10:43:25Z"},{"alias_kind":"arxiv_version","alias_value":"2410.07343v2","created_at":"2026-07-05T10:43:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.07343","created_at":"2026-07-05T10:43:25Z"},{"alias_kind":"pith_short_12","alias_value":"T42V3WMADJ6Y","created_at":"2026-07-05T10:43:25Z"},{"alias_kind":"pith_short_16","alias_value":"T42V3WMADJ6YYMD4","created_at":"2026-07-05T10:43:25Z"},{"alias_kind":"pith_short_8","alias_value":"T42V3WMA","created_at":"2026-07-05T10:43:25Z"}],"graph_snapshots":[{"event_id":"sha256:71f2c6402ff88555133a2f6f7d5f6616bf3ade864b77658bfee4808336a54162","target":"graph","created_at":"2026-07-05T10:43:25Z","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/2410.07343/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore the big-bang nucleosynthesis (BBN) constraint on heavy neutrino that is a mixture of gauge singlet fermion and active neutrinos in the Standard Model. We work in the minimal model with only two parameters, the heavy neutrino mass $m_4$ and the mixing parameter $|U_{a4}|^2$, where $a=e$, $\\mu$, or $\\tau$ stands for the active neutrino flavor. We show that both the early universe production mechanism and decay products of the heavy neutrino are determined by $m_4$ and $|U_{a4}|^2$, with little room for further assumptions. This predictivity allows us to present a portrait of the entir","authors_text":"Yue Zhang, Yu-Ming Chen","cross_cats":["astro-ph.CO","hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T18:00:28Z","title":"BBN Constraint on Heavy Neutrino Production and Decay"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.07343","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":"sha256:391b56bca6d8036258e3f18311a4832ee976e2cede690c3462276b75832f0ad6","target":"record","created_at":"2026-07-05T10:43:25Z","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":"a7ef6140c487975884225c5570303b23b0f515b34b162f834f5682159121e3fa","cross_cats_sorted":["astro-ph.CO","hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T18:00:28Z","title_canon_sha256":"98698cc59eeb9c272959bc08d062cc4e17795e3de0eb6bc93a4fd4d7dbf7f26a"},"schema_version":"1.0","source":{"id":"2410.07343","kind":"arxiv","version":2}},"canonical_sha256":"9f355dd9801a7d8c307c7b202dedbd89c4b17c926f35e4ca1a82c22724533747","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f355dd9801a7d8c307c7b202dedbd89c4b17c926f35e4ca1a82c22724533747","first_computed_at":"2026-07-05T10:43:25.561793Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:43:25.561793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0Kq7al0tlX0jw/xIlsu5vnOzDG3AVnESeSAS81A7BXITIspBPJzBaIEWi6+F0Hg3hMCmIEC9T5P2BojDd3KFAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:43:25.562255Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.07343","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:391b56bca6d8036258e3f18311a4832ee976e2cede690c3462276b75832f0ad6","sha256:71f2c6402ff88555133a2f6f7d5f6616bf3ade864b77658bfee4808336a54162"],"state_sha256":"82186b57b66dd55b99ec106146fedc04d6d4ce50bd6398d8598c6d6833dbd4f6"}