Panorama of new-physics explanations to the MiniBooNE excess
(2025) Physical review D — Vol. 111 (2025)
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- Abstract
- The MiniBooNE low-energy excess stands as an unexplained anomaly in short-baseline neutrino oscillation experiments. It has been shown that it can be explained in the context of dark sector models. Here, we provide an overview of the possible new-physics solutions based on electron, photon, and dilepton final states. We systematically discuss the various production mechanisms for dark particles in neutrino-nucleus scattering. Our main result is a comprehensive fit to the MiniBooNE energy spectrum in the parameter space of dark neutrino models, where short-lived heavy neutral leptons are produced in neutrino interactions and decay to <math display="inline"><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>-</mo></msup></math> pairs inside the detector. For the first time, other experiments will be able to directly confirm or rule out dark neutrino interpretations of the MiniBooNE low-energy excess.
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Citations
Massaro, D., & et al. (2025). Panorama of new-physics explanations to the MiniBooNE excess. Physical review D, 111. https://doi.org/10.1103/PhysRevD.111.035028 (Original work published 2025)