Search for a Lorentz-violating sidereal signal with atmospheric neutrinos in IceCube
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Search for a Lorentz-violating sidereal signal with atmospheric neutrinos in IceCube

  • Author(s): etal, Abbasi, R,
  • et al.
Abstract

A search for sidereal modulation in the flux of atmospheric muon neutrinos in IceCube was performed. Such a signal could be an indication of Lorentz-violating physics. Neutrino oscillation models, derivable from extensions to the Standard Model, allow for neutrino oscillations that depend on the neutrino's direction of propagation. No such direction-dependent variation was found. A discrete Fourier transform method was used to constrain the Lorentz and CPT-violating coefficients in one of these models. Due to the unique high energy reach of IceCube, it was possible to improve constraints on certain Lorentz-violating oscillations by three orders of magnitude with respect to limits set by other experiments.

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