{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:MIOFK4IIJHUQJXM6DAHII7LYM5","short_pith_number":"pith:MIOFK4II","canonical_record":{"source":{"id":"2410.06970","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T15:08:46Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ff79d77cc21a531588cc0ff061a3c6aec9aff09be5964845bede18b3b3558ee9","abstract_canon_sha256":"c9c9259bd0a8f3da0d7d011dca690050aac0c5a1759954a8e951b1d83a196b12"},"schema_version":"1.0"},"canonical_sha256":"621c55710849e904dd9e180e847d78676bcd090ee4ab5cc4cc923a9b873d920d","source":{"kind":"arxiv","id":"2410.06970","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.06970","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"arxiv_version","alias_value":"2410.06970v2","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.06970","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"pith_short_12","alias_value":"MIOFK4IIJHUQ","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"pith_short_16","alias_value":"MIOFK4IIJHUQJXM6","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"pith_short_8","alias_value":"MIOFK4II","created_at":"2026-07-05T10:19:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:MIOFK4IIJHUQJXM6DAHII7LYM5","target":"record","payload":{"canonical_record":{"source":{"id":"2410.06970","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T15:08:46Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ff79d77cc21a531588cc0ff061a3c6aec9aff09be5964845bede18b3b3558ee9","abstract_canon_sha256":"c9c9259bd0a8f3da0d7d011dca690050aac0c5a1759954a8e951b1d83a196b12"},"schema_version":"1.0"},"canonical_sha256":"621c55710849e904dd9e180e847d78676bcd090ee4ab5cc4cc923a9b873d920d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:19:29.397593Z","signature_b64":"yZVfbpJlPSumC8tMJEjM56PeYkBjIVm8jdIo84ipGXbkrGLpsXlHBPSF1hQokEv3g6Iop+1R4KxSUyc9FXuGBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"621c55710849e904dd9e180e847d78676bcd090ee4ab5cc4cc923a9b873d920d","last_reissued_at":"2026-07-05T10:19:29.397088Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:19:29.397088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.06970","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:19:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kQW3VmfkhTkv02CIJ0O+IkiwQUja8agQ0Fobb1o19A6LSwGcgaQcxh6jfEl9iiqP42MOrs9BGrUd/CPZWVNjDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T10:00:27.511278Z"},"content_sha256":"3dc9f10d447a1a1d4e0d9ed3a7989b961f2c6349ab7c8636c10451b428af3753","schema_version":"1.0","event_id":"sha256:3dc9f10d447a1a1d4e0d9ed3a7989b961f2c6349ab7c8636c10451b428af3753"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:MIOFK4IIJHUQJXM6DAHII7LYM5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Relaxing Limits from Big Bang Nucleosynthesis on Heavy Neutral Leptons with Axion-like Particles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Chayan Majumdar, Frank F. Deppisch, Tom\\'as E. Gonzalo, Zhong Zhang","submitted_at":"2024-10-09T15:08:46Z","abstract_excerpt":"Heavy neutral leptons (HNLs) are constrained by requirements of Big Bang Nucleosynthesis (BBN) as their decays significantly impact the formation of the primordial elements. We propose here a model where the primary decay channel for the HNLs is to an axion-like particle (ALP) and a neutrino. Consequently, HNLs can decay earlier and evade the BBN bound for lower masses, provided the ALPs themselves decay considerably later. Further cosmological and astrophysical constraints limit severely the range of validity of the ALP properties. We find that a new parameter region opens up for HNLs with ma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.06970","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2410.06970/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:19:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ti+ocmmEcln70NHqLg4z9/G1WJvVO6xMVdAXEJuglWEcz0NkBjL6WQzjWPxcaXxjxyvYUwx+boKaR6oTVBozAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T10:00:27.512198Z"},"content_sha256":"236d4b8bd7bf3ae696c840404866f7cf14bbb436b9aab7a50cd3b3ae0f19e3cd","schema_version":"1.0","event_id":"sha256:236d4b8bd7bf3ae696c840404866f7cf14bbb436b9aab7a50cd3b3ae0f19e3cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MIOFK4IIJHUQJXM6DAHII7LYM5/bundle.json","state_url":"https://pith.science/pith/MIOFK4IIJHUQJXM6DAHII7LYM5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MIOFK4IIJHUQJXM6DAHII7LYM5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T10:00:27Z","links":{"resolver":"https://pith.science/pith/MIOFK4IIJHUQJXM6DAHII7LYM5","bundle":"https://pith.science/pith/MIOFK4IIJHUQJXM6DAHII7LYM5/bundle.json","state":"https://pith.science/pith/MIOFK4IIJHUQJXM6DAHII7LYM5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MIOFK4IIJHUQJXM6DAHII7LYM5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:MIOFK4IIJHUQJXM6DAHII7LYM5","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":"c9c9259bd0a8f3da0d7d011dca690050aac0c5a1759954a8e951b1d83a196b12","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T15:08:46Z","title_canon_sha256":"ff79d77cc21a531588cc0ff061a3c6aec9aff09be5964845bede18b3b3558ee9"},"schema_version":"1.0","source":{"id":"2410.06970","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.06970","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"arxiv_version","alias_value":"2410.06970v2","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.06970","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"pith_short_12","alias_value":"MIOFK4IIJHUQ","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"pith_short_16","alias_value":"MIOFK4IIJHUQJXM6","created_at":"2026-07-05T10:19:29Z"},{"alias_kind":"pith_short_8","alias_value":"MIOFK4II","created_at":"2026-07-05T10:19:29Z"}],"graph_snapshots":[{"event_id":"sha256:236d4b8bd7bf3ae696c840404866f7cf14bbb436b9aab7a50cd3b3ae0f19e3cd","target":"graph","created_at":"2026-07-05T10:19:29Z","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/2410.06970/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Heavy neutral leptons (HNLs) are constrained by requirements of Big Bang Nucleosynthesis (BBN) as their decays significantly impact the formation of the primordial elements. We propose here a model where the primary decay channel for the HNLs is to an axion-like particle (ALP) and a neutrino. Consequently, HNLs can decay earlier and evade the BBN bound for lower masses, provided the ALPs themselves decay considerably later. Further cosmological and astrophysical constraints limit severely the range of validity of the ALP properties. We find that a new parameter region opens up for HNLs with ma","authors_text":"Chayan Majumdar, Frank F. Deppisch, Tom\\'as E. Gonzalo, Zhong Zhang","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T15:08:46Z","title":"Relaxing Limits from Big Bang Nucleosynthesis on Heavy Neutral Leptons with Axion-like Particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.06970","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":"sha256:3dc9f10d447a1a1d4e0d9ed3a7989b961f2c6349ab7c8636c10451b428af3753","target":"record","created_at":"2026-07-05T10:19:29Z","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":"c9c9259bd0a8f3da0d7d011dca690050aac0c5a1759954a8e951b1d83a196b12","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2024-10-09T15:08:46Z","title_canon_sha256":"ff79d77cc21a531588cc0ff061a3c6aec9aff09be5964845bede18b3b3558ee9"},"schema_version":"1.0","source":{"id":"2410.06970","kind":"arxiv","version":2}},"canonical_sha256":"621c55710849e904dd9e180e847d78676bcd090ee4ab5cc4cc923a9b873d920d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"621c55710849e904dd9e180e847d78676bcd090ee4ab5cc4cc923a9b873d920d","first_computed_at":"2026-07-05T10:19:29.397088Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:19:29.397088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yZVfbpJlPSumC8tMJEjM56PeYkBjIVm8jdIo84ipGXbkrGLpsXlHBPSF1hQokEv3g6Iop+1R4KxSUyc9FXuGBw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:19:29.397593Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.06970","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dc9f10d447a1a1d4e0d9ed3a7989b961f2c6349ab7c8636c10451b428af3753","sha256:236d4b8bd7bf3ae696c840404866f7cf14bbb436b9aab7a50cd3b3ae0f19e3cd"],"state_sha256":"2776f2dc7130a46f95184bd2946abab9c4bd0ec419f83ed4e1364068845907de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3OzOA1dOju2SalVABJm7hBp1/c7s0aZNNgvCIlc9jeCgJ3ay3jstQ3FG16JGDSG8lqVduIj3SGYB77jYWYiHDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T10:00:27.574463Z","bundle_sha256":"484934eb0c37fa29a9365ee102d35c99f943d1d4d0e4115e56dd6341f0b534fa"}}