Speaker
Joachim Kopp
(University of Mainz)
Description
We show that the high energy events observed in the IceCube detector - usually interpreted as evidence for an astrophysical neutrino flux - could also be a signal of highly boosted dark matter particles scattering on nucleons. This scenario is for instance realized in models featuring a superheavy DM particle which decays into a much lighter dark sector species. We show that, besides explaining the total rate, energy spectrum and track vs. shower ratio of the IceCube events, such a scenario could also easily accommodate the Fermi gamma ray excess if the light dark sector species has a non-negligible relic abundance and annihilates into Standard Model particles.
Author
Joachim Kopp
(University of Mainz)
Co-authors
Jia Liu
(University of Mainz)
Xiaoping Wang
(University of Mainz)
