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|Title:||Search for nonstandard neutrino interactions with IceCube DeepCore|
Al Samarai, I.
|Citation:||Physical Review D, 2018; 97(7):072009-1-072009-10|
|Publisher:||American Physical Society|
|M.G. Aartsen … G.C. Hill … A. Kyriacou … S. Robertson … A. Wallace … B.J. Whelan … et al. [The IceCube Collaboration]|
|Abstract:||As atmospheric neutrinos propagate through the Earth, vacuumlike oscillations are modified by Standard Model neutral- and charged-current interactions with electrons. Theories beyond the Standard Model introduce heavy, TeV-scale bosons that can produce nonstandard neutrino interactions. These additional interactions may modify the Standard Model matter effect producing a measurable deviation from the prediction for atmospheric neutrino oscillations. The result described in this paper constrains nonstandard interaction parameters, building upon a previous analysis of atmospheric muon-neutrino disappearance with three years of IceCube DeepCore data. The best fit for the muon to tau flavor changing term is εμτ=−0.0005, with a 90% C.L. allowed range of −0.0067<εμτ<0.0081. This result is more restrictive than recent limits from other experiments for εμτ. Furthermore, our result is complementary to a recent constraint on εμτ using another publicly available IceCube high-energy event selection. Together, they constitute the world’s best limits on nonstandard interactions in the μ−τ sector.|
|Rights:||Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.|
|Appears in Collections:||Physics publications|
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