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

Loading...
Thumbnail Image
Date
2010-12-09
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
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. Because of the unique high energy reach of IceCube, it was possible to improve constraints on certain Lorentz-violating oscillations by 3 orders of magnitude with respect to limits set by other experiments.

Description
Keywords
Astronomy & Astrophysics, Physics, Particles & Fields, Physics
Citation
Abbasi, R., et al. (2010): Search for the Lorentz-violating Sidereal Signal with Atmospheric Neutrinos in IceCube. Physical Review D, 82(11). DOI: http://dx.doi.org/10.1103/PhysRevD.82.112003