{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2000:WI47OY7GGDKC534YIFEDWCI4YX","short_pith_number":"pith:WI47OY7G","schema_version":"1.0","canonical_sha256":"b239f763e630d42eef9841483b091cc5d2c3f09347865e5b0b5aec10a018e6c8","source":{"kind":"arxiv","id":"astro-ph/0002248","version":2},"attestation_state":"computed","paper":{"title":"Big Bang Nucleosynthesis updated with the NACRE Compilation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alain Coc, Elisabeth Vangioni-Flam, Michel Casse","submitted_at":"2000-02-11T10:48:17Z","abstract_excerpt":"We update the Big Bang Nucleosynthesis calculations on the basis of the recent NACRE compilation. The average values of the calculated abundances of light nuclei do not differ significantly from that obtained using the previous Fowler's compilation.\n ${^7}Li$ is slightly depressed at high baryon to photon ratio $\\eta$.\n  The main uncertainty concerns the $D(p,\\gamma){^3}He$ reaction rate affecting the synthesis of ${^7}Li$ (via the ${^3}He(\\alpha,\\gamma){^7}Be(e\\nu){^7}Li$) at rather high baryonic density. On the left part of the lithium valley the uncertainty is strongly reduced due to the im"},"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/0002248","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-11T10:48:17Z","cross_cats_sorted":[],"title_canon_sha256":"02f1e9baef53eed714b3b88b4f072f418410bc50dab6608a08bf6e78295ed1e0","abstract_canon_sha256":"d89bbdb784006161e7e21b8c1fdd081c67a555dbb99c6261545c80ed986f724b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:46.858369Z","signature_b64":"1Nb9PtCEddP5NFdY6gv1ZGf4UCSZpmLStccgatJRa9RxSrlKqgh3uRaEhuRzhhXlpeDXMipP9XwhXJWosYpGDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b239f763e630d42eef9841483b091cc5d2c3f09347865e5b0b5aec10a018e6c8","last_reissued_at":"2026-05-18T01:07:46.857841Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:46.857841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Big Bang Nucleosynthesis updated with the NACRE Compilation","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alain Coc, Elisabeth Vangioni-Flam, Michel Casse","submitted_at":"2000-02-11T10:48:17Z","abstract_excerpt":"We update the Big Bang Nucleosynthesis calculations on the basis of the recent NACRE compilation. The average values of the calculated abundances of light nuclei do not differ significantly from that obtained using the previous Fowler's compilation.\n ${^7}Li$ is slightly depressed at high baryon to photon ratio $\\eta$.\n  The main uncertainty concerns the $D(p,\\gamma){^3}He$ reaction rate affecting the synthesis of ${^7}Li$ (via the ${^3}He(\\alpha,\\gamma){^7}Be(e\\nu){^7}Li$) at rather high baryonic density. On the left part of the lithium valley the uncertainty is strongly reduced due to the im"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0002248","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":""},"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/0002248","created_at":"2026-05-18T01:07:46.857930+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0002248v2","created_at":"2026-05-18T01:07:46.857930+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0002248","created_at":"2026-05-18T01:07:46.857930+00:00"},{"alias_kind":"pith_short_12","alias_value":"WI47OY7GGDKC","created_at":"2026-05-18T12:25:50.254431+00:00"},{"alias_kind":"pith_short_16","alias_value":"WI47OY7GGDKC534Y","created_at":"2026-05-18T12:25:50.254431+00:00"},{"alias_kind":"pith_short_8","alias_value":"WI47OY7G","created_at":"2026-05-18T12:25:50.254431+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/WI47OY7GGDKC534YIFEDWCI4YX","json":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX.json","graph_json":"https://pith.science/api/pith-number/WI47OY7GGDKC534YIFEDWCI4YX/graph.json","events_json":"https://pith.science/api/pith-number/WI47OY7GGDKC534YIFEDWCI4YX/events.json","paper":"https://pith.science/paper/WI47OY7G"},"agent_actions":{"view_html":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX","download_json":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX.json","view_paper":"https://pith.science/paper/WI47OY7G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0002248&json=true","fetch_graph":"https://pith.science/api/pith-number/WI47OY7GGDKC534YIFEDWCI4YX/graph.json","fetch_events":"https://pith.science/api/pith-number/WI47OY7GGDKC534YIFEDWCI4YX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX/action/storage_attestation","attest_author":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX/action/author_attestation","sign_citation":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX/action/citation_signature","submit_replication":"https://pith.science/pith/WI47OY7GGDKC534YIFEDWCI4YX/action/replication_record"}},"created_at":"2026-05-18T01:07:46.857930+00:00","updated_at":"2026-05-18T01:07:46.857930+00:00"}