Searches for Sterile Neutrinos with the IceCube Detector

IceCube Collaboration

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171 Scopus citations

Abstract

The IceCube neutrino telescope at the South Pole has measured the atmospheric muon neutrino spectrum as a function of zenith angle and energy in the approximate 320 GeV to 20 TeV range, to search for the oscillation signatures of light sterile neutrinos. No evidence for anomalous νμ or νμ disappearance is observed in either of two independently developed analyses, each using one year of atmospheric neutrino data. New exclusion limits are placed on the parameter space of the 3+1 model, in which muon antineutrinos experience a strong Mikheyev-Smirnov-Wolfenstein-resonant oscillation. The exclusion limits extend to sin22θ24≤0.02 at Δm2∼0.3 eV2 at the 90% confidence level. The allowed region from global analysis of appearance experiments, including LSND and MiniBooNE, is excluded at approximately the 99% confidence level for the global best-fit value of |Ue4|2.

Original languageEnglish (US)
Article number071801
JournalPhysical review letters
Volume117
Issue number7
DOIs
StatePublished - Aug 8 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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