{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1992:DYW4DLYLEVBX44ZCEI6RJ4P3NO","short_pith_number":"pith:DYW4DLYL","schema_version":"1.0","canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","source":{"kind":"arxiv","id":"astro-ph/9210007","version":1},"attestation_state":"computed","paper":{"title":"Effect of Neutrino Heating on Primordial Nucleosynthesis","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"B. Fields, M.S. Turner (U. Chicago/Fermilab), S. Dodelson","submitted_at":"1992-10-31T20:40:38Z","abstract_excerpt":"We have modified the standard code for primordial nucleosynthesis to include the effect of the slight heating of neutrinos by $e^\\pm$ annihilations. There is a small, systematic change in the $^4$He yield, $\\Delta Y \\simeq +1.5\\times 10^{-4}$, which is insensitive to the value of the baryon-to-photon ratio $\\eta$ for $10^{-10}\\la \\eta \\la 10^{-9}$. We also find that the baryon-to-photon ratio decreases by about 0.5\\% less than the canonical factor of 4/11 because some of the entropy in $e^\\pm$ pairs is transferred to neutrinos. These results are in accord with recent analytical estimates."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"astro-ph/9210007","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1992-10-31T20:40:38Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"db7a23ab9d808fc4bc7ba449185fd9666784257e71155bf36afc8c835a0c0c8b","abstract_canon_sha256":"b1e7b67f362da4d2cfbb5ef4c1a2fc2861826201424bfa175ba24650e26a3c71"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:54:47.965115Z","signature_b64":"4EUbsIRkqvBp3wJMq50WaqXM1Jr4laW7cDsNGZNlApLXI78zqDXB5+ug5eFlQ22iCkRfbwQiBJrbRJfGcoNDDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","last_reissued_at":"2026-07-04T15:54:47.964726Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:54:47.964726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Effect of Neutrino Heating on Primordial Nucleosynthesis","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"B. Fields, M.S. Turner (U. Chicago/Fermilab), S. Dodelson","submitted_at":"1992-10-31T20:40:38Z","abstract_excerpt":"We have modified the standard code for primordial nucleosynthesis to include the effect of the slight heating of neutrinos by $e^\\pm$ annihilations. There is a small, systematic change in the $^4$He yield, $\\Delta Y \\simeq +1.5\\times 10^{-4}$, which is insensitive to the value of the baryon-to-photon ratio $\\eta$ for $10^{-10}\\la \\eta \\la 10^{-9}$. We also find that the baryon-to-photon ratio decreases by about 0.5\\% less than the canonical factor of 4/11 because some of the entropy in $e^\\pm$ pairs is transferred to neutrinos. These results are in accord with recent analytical estimates."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9210007","kind":"arxiv","version":1},"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/astro-ph/9210007/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9210007","created_at":"2026-07-04T15:54:47.964787+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9210007v1","created_at":"2026-07-04T15:54:47.964787+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9210007","created_at":"2026-07-04T15:54:47.964787+00:00"},{"alias_kind":"pith_short_12","alias_value":"DYW4DLYLEVBX","created_at":"2026-07-04T15:54:47.964787+00:00"},{"alias_kind":"pith_short_16","alias_value":"DYW4DLYLEVBX44ZC","created_at":"2026-07-04T15:54:47.964787+00:00"},{"alias_kind":"pith_short_8","alias_value":"DYW4DLYL","created_at":"2026-07-04T15:54:47.964787+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO","json":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO.json","graph_json":"https://pith.science/api/pith-number/DYW4DLYLEVBX44ZCEI6RJ4P3NO/graph.json","events_json":"https://pith.science/api/pith-number/DYW4DLYLEVBX44ZCEI6RJ4P3NO/events.json","paper":"https://pith.science/paper/DYW4DLYL"},"agent_actions":{"view_html":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO","download_json":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO.json","view_paper":"https://pith.science/paper/DYW4DLYL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9210007&json=true","fetch_graph":"https://pith.science/api/pith-number/DYW4DLYLEVBX44ZCEI6RJ4P3NO/graph.json","fetch_events":"https://pith.science/api/pith-number/DYW4DLYLEVBX44ZCEI6RJ4P3NO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/action/storage_attestation","attest_author":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/action/author_attestation","sign_citation":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/action/citation_signature","submit_replication":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/action/replication_record"}},"created_at":"2026-07-04T15:54:47.964787+00:00","updated_at":"2026-07-04T15:54:47.964787+00:00"}