# Search for sterile neutrinos in MINOS and MINOS+ using a two-detector fit

Adamson, P. and Anghel, I. and Aurisano, A. and Barr, G. and Bishai, M. and Blake, A. and Bock, G. J. and Bogert, D. and Cao, S. V. and Carroll, T. J. and Castromonte, C. M. and Chen, R. and Childress, S. and Coelho, J. A. B. and Corwin, L. and Cronin-Hennessy, D. and Jong, J. K. de and Rijck, S. De and Devan, A. V. and Devenish, N. E. and Diwan, M. V. and Escobar, C. O. and Falk, E. and Feldman, G. J. and Flanagan, W. and Frohne, M. V. and Gabrielyan, M. and Gallagher, H. R. and Germani, S. and Gomes, R. A. and Gouffon, P. and Graf, N. and Gran, R. and Grzelak, K. and Habig, A. and Hahn, S. R. and Hartnell, J. and Hatcher, R. and Holin, A. and Hylen, J. and Irwin, G. M. and Isvan, Z. and Jensen, D. and Kafka, T. and Kasahara, S. M. S. and Koerner, L. W. and Koizumi, G. and Kordosky, M. and Kreymer, A. and Nowak, J. A. (2019) Search for sterile neutrinos in MINOS and MINOS+ using a two-detector fit. Physical review letters, 122 (9). ISSN 1079-7114

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PhysRevLett.122.091803.pdf - Published Version
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 km and 735 km, using a combined MINOS and MINOS+ exposure of $16.36\times10^{20}$ 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 $\sin^2\theta_{24}$ for most values of the sterile neutrino mass-splitting $\Delta m^2_{41} > 10^{-4}$ eV$^2$.