Search for flavor-changing nonstandard neutrino interactions using ν_e appearance in MINOS

Abstract

We report new constraints on flavor-changing nonstandard neutrino interactions from the MINOS long-baseline experiment using ν_e and ν_e appearance candidate events from predominantly ν_μ and ν_μ beams. We used a statistical selection algorithm to separate ν_e candidates from background events, enabling an analysis of the combined MINOS neutrino and antineutrino data. We observe no deviations from standard neutrino mixing, and thus place constraints on the nonstandard interaction matter effect, |ϵ_(eτ)|, and phase, (δ_(CP)+δ_(eτ)), using a 30-bin likelihood fit.

Additional Information

© 2017 American Physical Society. Received 24 May 2016; published 9 January 2017. This work was supported by the U.S. DOE; the United Kingdom STFC; the U.S. NSF; the State and University of Minnesota; and Brazil's FAPESP, CNPq and CAPES. We are grateful to the Minnesota Department of Natural Resources, the crew of the Soudan Underground Lab, and the personnel of Fermilab for their contribution to this effort. We thank the Texas Advanced Computing Center at The University of Texas at Austin for the provision of computing resources.

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Submitted - 1605.06169v3.pdf

Published - PhysRevD.95.012005.pdf

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