{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"15236dcf1dcf0f377774e22c6adce6fb0b3265616d64553381acfa0f3bb01461","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["80a55df00727257e5ffd06c3456611878d5e3450a708b81f8986a5377faadb26","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"454710384fbeb480d47b22b84aad5c024359ebef905c033cbe2a57f4acdb1c25","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"hep.baryogenesis.baryon-asymmetry-origin","kind":"phenomenon","literature_status":"open","n":"2","parents":[],"plain":"For every billion antiquarks there were about a billion and one quarks in the early universe. Something broke the matter-antimatter balance, and we do not know what.","posed_since":"1967","precise":"Explain $\\eta_B = n_B/n_\\gamma \\sim 6.1 \\times 10^{-10}$ (CMB and BBN) satisfying the Sakharov conditions, given that SM CP violation and the SM crossover fail by many orders of magnitude. An answer is a mechanism (thermal or resonant leptogenesis, electroweak baryogenesis, Affleck-Dine, or others) with an independent experimental confirmation.","problem_ref":"80a55df00727257e5ffd06c3456611878d5e3450a708b81f8986a5377faadb26","references":"","settled_by":"Laboratory confirmation of the ingredients of one mechanism, for example lepton number violation plus leptonic CP violation plus heavy neutral leptons for leptogenesis.","status_note":"","title":"Which mechanism produced the cosmic baryon asymmetry?","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"c27d9615db62af8174702c9dc71d542a8805b18790af590ed93ee65efef15dc2","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"ae7e844e8a86b0cbb4a75317b6b76630634e71de6cfff8f42b401c85b6124425","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"BD6p_TUKY2j60Gr-c0fNXknZr9ffqP3ibbgQ9n7s-5906QehqRBxsx3ktkxGNAGtffJFKR_N0QWjFP4zhzBlAQ"},"schema":"pubphys.envelope/1"},"record_hash":"c27d9615db62af8174702c9dc71d542a8805b18790af590ed93ee65efef15dc2","leaf_index":3320}