Active to sterile neutrino mixing limits from neutral-current interactions in MINOS

Details Active to sterile neutrino mixing limits from neutral-current interactions in MINOS Active to sterile neutrino mixing limits from neutral-current interactions in MINOS

2011-04-20

arxiv.org/abs/1104.3922v4

Phys.Rev.Lett.107:011802,2011

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 3 tables, 2 figures. Published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.107.011802

Results are reported from a search for active to sterile neutrino oscillations in the MINOS long-baseline experiment, based on the observation of neutral-current neutrino interactions, from an exposure to the NuMI neutrino beam of $7.07\times10^{20}$ protons on target. A total of 802 neutral-current event candidates is observed in the Far Detector, compared to an expected number of $754\pm28\rm{(stat.)}\pm{37}\rm{(syst.)}$ for oscillations among three active flavors. The fraction $f_s$ of disappearing \numu that may transition to $\nu_s$ is found to be less than 22% at the 90% C.L.

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