Sterile Neutrino searches with MINOS and MINOS+

A search for sterile neutrinos was performed by looking for muon neutrino disappearance using the MINOS/MINOS+ detectors. The two detectors are at baselines of 1.04 km and 735 km from the neutrino production target of the NuMI neutrino beam at Fermilab. The data exposure consists of $10.56 \times 10^{20}$ protons-on-target from a beam configuration with a neutrino energy distribution peaked at 3 GeV and a further $5.8 \times 10^{20}$ protons-on-target in a higher energy configuration with a beam peak energy of 7 GeV. A simultaneous analysis of the $\nu_{\mu}$ charged-current and neutral- current neutrino energy spectra in the two detectors, using a $3+1$ sterile neutrino model, yields no evidence of sterile neutrino mixing. A world-leading limit on the sterile mixing angle $\sin^2 \theta_{24}$ is set for many values of the sterile neutrino mass-splitting $\Delta m^2_{41} \gt 10^{-4}\,$eV$^2$.