Shadow dark matter, sterile neutrinos and neutrino events at IceCube

TL;DR

This paper proposes that high-energy neutrino excesses observed by IceCube could originate from dark mirror sector baryon decays producing sterile neutrinos, which oscillate into observable neutrinos, explaining spectral features like the 2 PeV cutoff and energy gap.

Contribution

It introduces a novel scenario linking dark mirror baryons and sterile neutrinos to IceCube neutrino observations, explaining spectral features.

Findings

Sterile neutrinos from dark sector can produce observable neutrino spectrum features.

The model explains the spectral cutoff above 2 PeV and the gap between 400 TeV and 1 PeV.

Proposes a new connection between dark matter and high-energy neutrino signals.

Abstract

The excess of high energy neutrinos observed by the IceCube collaboration might originate from baryon number violating decays of heavy shadow baryons from dark mirror sector which produce shadow neutrinos. These sterile neutrino species then oscillate into ordinary neutrinos transferring to them specific features of their spectrum. In particular, this scenario can explain the end of the spectrum above 2 PeV and the presence of the energy gap between 400 TeV and 1 PeV.