Short Baseline Oscillations and the Gallium Mystery

Abstract

Data from several neutrino experiments suggest an anomalous neutrino flavor transition across relatively short baselines which is in conflict with the three-flavor neutrino oscillation paradigm. In particular, MiniBooNE and BEST collaborations have reported anomalous findings at $\sim 5\sigma$. In this contribution, such measurements and their possible explanations within and beyond the Standard Model are discussed.

Comments: 7 pages, 3 figures, contribution to the 2023 Electroweak session of the 57th Rencontres de Moriond