Description |
The recent observations with neutrino telescopes have opened a
new window to the cosmos, giving the chance to explore very high-energy
phenomena that can be potentially linked to new physics. The recent study
on the the 6-year up-going muon neutrinos by the IceCube Collaboration and
the multi-messenger analyses support the hypothesis of a two-component
scenario explaining the diffuse TeV-PeV neutrino flux. Depending on the
steepness of the astrophysical power-law, an excess in the IceCube data is
shown in the energy range 10-100 TeV (low-energy excess) or at PeV
(high-energy excess). The origin of such excesses is characterized by
performing a statistical analysis on the neutrino energy spectrum and on
the angular distribution of neutrino events. Such excesses could be
explained in terms of a decaying/annihilating Dark Matter signal with mass
of about 100 TeV up to few PeV.
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