Search for Sterile Neutrinos in MINOS and MINOS plus Using a Two-Detector Fit

Adamson P.,Anghel I.,Aurisano A., Barr G.,Bishai M.,Blake A.,Bock G. J.,Bogert D.,Cao S. V.,Carroll T. J., Castromonte C. M.,Chen R.,Childress S.,Coelho J. A. B., Corwin L.,Cronin-Hennessy D.,de Jong J. K.,De Rijck S., Devan A. V., Devenish N. E., Diwan M. V., Escobar C. O.,Evans J. J., Falk E.,Feldman G. J., Flanagan W., Frohne M. V.,Gabrielyan M., Gallagher H. R., Germani S.,Gomes R. A., Goodman M. C., Gouffon P., Graf N., Gran R., Grzelak K.,Habig A.,Hahn S. R.,Hartnell J.,Hatcher R., Holin A.,Huang J., Hylen J., Irwin G. M., Isvan Z.,James C., Jensen D., Kafka T., Kasahara S. M. S., Koerner L. W., Koizumi G., Kordosky M., Kreymer A., Lang K.,Ling J., Litchfield P. J.,Lucas P., Mann W. A.,Marshak M. L., Mayer N., McGivern C., Medeiros M. M., Mehdiyev R., Meier J. R., Messier M. D.,Miller W. H.,Mishra S. R.,Sher S. Moed,Moore C. D., Mualem L., Musser J., Naples D.,Nelson J. K., Newman H. B.,Nichol R. J., Nowak J. A., O'Connor J., Orchanian M.,Pahlka R. B., Paley J., Patterson R. B., Pawloski G., Perch A., Pfützner M. M.,Phan D. D., Phan-Budd S., Plunkett R. K.,Poonthottathil N.,Qiu X.,Radovic A.,Rebel B., Rosenfeld C., Rubin H. A., Sail P., Sanchez M. C., Schneps J., Schreckenberger A., Schreiner P.,Sharma R.,Sousa A., Tagg N., Talaga R. L.,Thomas J., Thomson M. A., Tian X., Timmons A., Todd J.,Tognini S. C., Toner R., Torretta D., Tzanakos G., Urheim J., Vahle P., Viren B., Weber A.,Webb R. C., White C.,Whitehead L. H., Wojcicki S. G., Zwaska R.

PHYSICAL REVIEW LETTERS（2019）

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摘要

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 735 km, using a combined MINOS and MINOS+ exposure of 16.36 x 10(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(41)(2) > 10(-4) eV(2).

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