{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"a626359e631cc5df0f7b2cfa5fdbcfd40a67fe50be70a7f76669d6795b624907","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["803f6c61383951a1e03e0a6e06849793a7e488ac6cf7c0b6df95233710df0a6b","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"9ef13953549595c7132fb48f5903c9f0ad29430812d273abbe33df7071cc4bdc","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"hep.neutrino-mass.mass-origin","kind":"phenomenon","literature_status":"open","n":"2","parents":[],"plain":"Neutrinos are at least a million times lighter than the electron. They could get mass like other particles but with a tiny coupling, or through a seesaw with very heavy partner particles.","posed_since":"1998","precise":"Identify the origin of $m_{\\nu} < \\sim 0.1\\ \\mathrm{eV}$: Dirac Yukawas with $y \\sim 10^{-12}$ plus right-handed neutrinos, the type I, II or III seesaw ($m_{\\nu} \\sim y^2 v^2 / M$), or radiative and low-scale mechanisms. An answer is the mechanism together with its scale, confirmed by a signature such as lepton number violation or heavy neutral leptons.","problem_ref":"803f6c61383951a1e03e0a6e06849793a7e488ac6cf7c0b6df95233710df0a6b","references":"","settled_by":"Observation of neutrinoless double beta decay plus identification of the associated new states or interactions at colliders or in rare decays.","status_note":"","title":"What mechanism generates neutrino masses?","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"1184506c279d9c802e4169d82169effc7679f69bc8484ca312f392fb9499a702","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"0b27adfa6e84818b079156c575e468c28f1ac229a383c796962c85279837e647","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"tXVSFz3-dBzQYinFzcsz3cYrAZLofdDPl4wUeHDxzRt_oO0h16mh1UFfaU0K0tcsx60qgq_P8mydP_e9LNxTCA"},"schema":"pubphys.envelope/1"},"record_hash":"1184506c279d9c802e4169d82169effc7679f69bc8484ca312f392fb9499a702","leaf_index":3380}