{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"456417db67d50a2097eedd92af5e31f2d4652e77843e16676d410711379d845f","created":"2026-10-03T07:18:05Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"d41a0bdce2784a09241cc7a34cac9f9f71b02128ee447c2af562333b2240eeb1","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"hep.sterile-neutrino-anomalies.anomaly-origin","kind":"phenomenon","literature_status":"open","n":"1","parents":[],"plain":"LSND and MiniBooNE saw extra electron-like events, and gallium detectors saw too few neutrino captures. These do not fit the three-neutrino picture.","posed_since":"1995","precise":"Explain the LSND (1995) and MiniBooNE electron-like excesses and the gallium deficit in a single consistent framework, or show they have separate conventional origins. An answer is the mechanism (sterile oscillation, decaying heavy states, new interactions, or background and cross-section mismodeling) consistent with disappearance limits.","problem_ref":null,"references":"","settled_by":"The Fermilab SBN program (SBND, MicroBooNE, ICARUS) measuring $\\nu_e$ appearance and $\\nu_\\mu$ disappearance with one technology at several baselines.","status_note":"MicroBooNE (Nature, December 2025) excludes a single light sterile neutrino explanation of LSND and MiniBooNE at 95 percent CL.","title":"What causes the short-baseline neutrino anomalies?","topic_ref":"7c3a93300e8710b41f3d7fcb0f1c9a791d835219d51f56a2ebbdc44a8de8988d"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"e40db54d49b7bbcae272f1539b8bcc9bf6317cdea1fb76b8ba7ab069c56691ac","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"ecd7aec8b3554741f8150022b1b1c883d322480f1745b98b618928feeaa603ab","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"zhB_Odv33HbsjmAj1srsLjGCK6wbVR488WEbJxEJvSgd9mdxnQnKiaylYmTx2rXrKOzX1nLN1e_XDjwpL-v2Cw"},"schema":"pubphys.envelope/1"},"record_hash":"e40db54d49b7bbcae272f1539b8bcc9bf6317cdea1fb76b8ba7ab069c56691ac","leaf_index":1576}