Short-baseline neutrino anomalies and sterile neutrinos
This text mentions work from 2024 on. Those parts were partly written without a live literature search and have not been checked by an editor yet.
Several experiments saw more or fewer neutrinos than expected over short distances, hinting at a fourth, non-interacting (sterile) neutrino. Newer experiments do not confirm the simplest version, but some excesses remain unexplained.
Why it matters
A sterile neutrino would be a new particle; if none exists, the anomalies expose flaws in neutrino flux or interaction modeling.
Review
M. A. Acero et al., White paper on light sterile neutrino searches and related phenomenology, Journal of Physics G, 2024. https://arxiv.org/abs/2203.07323 reference checked
Timestamp record
- Signed record
- 7c3a93300e87…
- Public log
- Entry 250, in checkpoint 2,123
- In the log by
- Block 969,698, 2026-10-03
This text was in the PubPhys log by that date. The date says nothing about when the problem was first posed.