Review of sterile neutrino searches at very short-baseline reactor experiments

Abstract

Search for New Physics beyond the Standard Model is the main direction in particle physics nowadays. There are several experimental hints of New Physics. The most statistically significant (5-6$\sigma$) are the hints of eV mass scale sterile neutrinos. They come from antineutrino disappearance in reactor experiments, ${\nu }_e$ disappearance in experiments with very powerful radioactive sources, and electron (anti)neutrino appearance in the muon (anti)neutrino beams. Very important results in this field were obtained in 2021 by the BEST, MicroBooNE, and Neutrino-4 collaborations as well as by several other experiments. However, the situation is still or maybe even more controversial. We review these indications of New Physics and prospects for the next few years with the emphasis on reactor experiments.

References in corpus (25)

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• MicroBooNE and the ${\nu }_e$ Interpretation of the MiniBooNE Low-Energy Excess
• Sterile neutrino self-interactions: $H_0$ tension and short-baseline anomalies
• Statistical significance of the sterile-neutrino hypothesis in the context of reactor and gallium data
• Sterile Neutrinos and the Global Reactor Antineutrino Dataset
• Neutrino-4 anomaly: oscillations or fluctuations?
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Cited by in corpus (1)

• Baseline and other effects for a sterile neutrino at DUNE