4.4 Article

Geometric compatibility of IceCube TeV-PeV neutrino excess and its galactic dark matter origin

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 1, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP01(2016)161

Keywords

Neutrino Detectors and Telescopes

Funding

  1. U.S. Department of Energy [DE-FG-02-95ER40896, DE-FG-02-95ER40899]
  2. UW-Madison
  3. Wisconsin IceCube Particle Astrophysics Center

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We perform a geometric analysis for the sky map of the IceCube TeV-PeV neutrino excess and test its compatibility with the sky map of decaying dark matter signals in our galaxy. We have found that a galactic decaying dark matter component in general improve the goodness of the fit of our model, although the pure isotropic hypothesis has a better fit than the pure dark matter one. We also consider several representative decaying dark matter, which can provide a good fit to the observed spectrum at IceCube with a dark matter lifetime of around 12 orders of magnitude longer than the age of the universe.

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