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Search for Active Neutrino Disappearance Using Neutral-Current Interactions in the MINOS Long-Baseline Experiment (2008)

Abstract
We report the first detailed comparisons of the rates and spectra of neutral-current neutrino interactions at two widely separated locations. A depletion in the rate at the far site would indicate mixing between vµ and a sterile particle. No anomalous depletion in the reconstructed energy spectrum is observed. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra limits the fraction of vµ oscillating to a sterile neutrino to be below 0.68 at 90% confidence level. A less stringent limit due to a possible contribution to the measured neutral-current event rate at the far site from ve appearance at the current experimental limit is also presented.

Publication details
Download http://authors.library.caltech.edu/14777/1/Adamson2008p2864Phys_Rev_Lett.pdf
http://resolver.caltech.edu/CaltechAUTHORS:20090804-072242697
Publisher American Physical Society
Repository Caltech Authors (United States)
Type Article, PeerReviewed
Relation http://resolver.caltech.edu/CaltechAUTHORS:20090804-072242697
http://authors.library.caltech.edu/14777/