| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5494787 | Physics Letters B | 2017 | 5 Pages |
Abstract
The assumption of a single astrophysical power-law flux to explain the IceCube 6-year HESE extraterrestrial events yields a large spectral index that is in tension with gamma-ray observations and the 6-year up-going muon neutrinos data. Adopting a spectral index belonging to the range [2.0,2.2], which is compatible with the one deduced by the analysis performed on the 6-year up-going muon neutrinos data and with p-p astrophysical sources, the latest IceCube data show an up to 2.6Ï excess in the number of events in the energy range 40-200 TeV. We interpret such an excess as a decaying Dark Matter signal and we perform a likelihood-ratio statistical test to compare the two-component scenario with respect to the single-component one.
Related Topics
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Authors
Marco Chianese, Gennaro Miele, Stefano Morisi,