Are IceCube neutrinos unveiling PeV-scale decaying dark matter?

Abstract

Recent observations by IceCube, notably two PeV cascades accompanied by events at energies ~ (30-400) TeV, are clearly in excess over atmospheric background fluxes and beg for an astroparticle physics explanation. Although some models of astrophysical accelerators can account for the observations within current statistics, intriguing features in the energy and possibly angular distributions of the events make worth exploring alternatives. Here, we entertain the possibility of interpreting the data with a few PeV mass scale decaying Dark Matter, with lifetime of the order of 10^27 s. We discuss generic signatures of this scenario, including its unique energy spectrum distortion with respect to the benchmark $E_{\nu }^{-2}$ expectation for astrophysical sources, as well as peculiar anisotropies. A direct comparison with the data show a good match with the above-mentioned features. We further discuss possible future checks of this scenario.

7 pages, 3 figures; v2: discussion improved, reference added, matches the version published in JCAP

References in corpus (6)

• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Global fit to three neutrino mixing: critical look at present precision
• Weak Corrections are Relevant for Dark Matter Indirect Detection
• Constraining Very Heavy Dark Matter Using Diffuse Backgrounds of Neutrinos and Cascaded Gamma Rays
• Indirect Searches for Decaying Dark Matter
• Demystifying the PeV Cascades in IceCube: Less (Energy) is More (Events)

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