Search for Sterile Neutrinos in MINOS and MINOS+ Using a Two-Detector Fit.
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A search for mixing between active neutrinos and light sterile neutrinos has been performed by looking for muon neutrino disappearance in two detectors at baselines of 1.04 and 735km, using a combined MINOS and MINOS+ exposure of 16.3610^{20} protons on target. A simultaneous fit to the charged-current muon neutrino and neutral-current neutrino energy spectra in the two detectors yields no evidence for sterile neutrino mixing using a 3+1 model. The most stringent limit to date is set on the mixing parameter sin^{2}_{24} for most values of the sterile neutrino mass splitting m_{41}^{2}>10^{-4}eV^{2}.