# On DUNE prospects in the search for sterile neutrinos

## TL;DR

This paper evaluates DUNE's potential to detect GeV-scale sterile neutrinos, providing decay estimates and mixing limits, indicating promising prospects for exploring new parameter space regions before other projects commence.

## Contribution

It offers the first detailed analysis of DUNE's sensitivity to sterile neutrinos with GeV masses, including decay predictions based on the detector design.

## Key findings

- DUNE can set competitive limits on sterile neutrino mixing angles.
- Predicted decay counts suggest DUNE's potential to explore previously inaccessible parameter space.
- Results indicate DUNE's significant role in sterile neutrino searches before other experiments start.

## Abstract

Experiments measuring the parameters of active neutrino oscillations can also search for the sterile neutrinos in a part of sterile neutrino parameter space. In this paper, we analyze the prospects for the sterile neutrino search in the upcoming experiment DUNE for the sterile neutrinos with masses at GeV scale. As it relies on the still-undecided design of the Near Detector, we provide the expected number of the sterile neutrino decays in the Near Detector volume. Our most optimistic predictions show that the corresponding limit on mixing can be approximately of the same order as the previous estimates made for the LBNE. We present our results as separate plots for the sterile neutrino mixing with electron, muon and tau neutrinos. Generally, DUNE has good prospects to probe large region of the previously unavailable part of the parameter space before the new projects (like SHiP) join the searches.