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  • Rapid Communication

Is there evidence for sterile neutrinos in IceCube data?

V. Barger1, Y. Gao2, and D. Marfatia3,1

  • 1Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA
  • 2Department of Physics, University of Oregon, Eugene, Oregon 97403, USA
  • 3Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, USA

Phys. Rev. D 85, 011302(R) – Published 18 January, 2012

DOI: https://doi.org/10.1103/PhysRevD.85.011302

Abstract

Data from the Liquid Scintillator Neutrino Detector and Mini-Booster Neutrino experiments, and the revised expectations of the antineutrino flux from nuclear reactors suggest the existence of eV-mass sterile neutrinos. The 3+2 and 1+3+1 scenarios accommodate all relevant short-baseline neutrino data except for the low-energy Mini-Booster Neutrino Experiment anomaly. We analyze the angular distribution of upward going atmospheric neutrino events in the IceCube-40 data set for evidence of sterile neutrinos within these scenarios. Depending on how systematic uncertainties are handled, we find strong evidence for, or weak evidence against sterile neutrinos. We show that future IceCube data will definitively settle the issue.

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