Hadronically decaying heavy dark matter and high-energy neutrino limits
M. Yu. Kuznetsov
Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
Abstract
We consider dark matter consisting of long-living particles
with masses GeV decaying through
hadronic channel as a source of high energy neutrino.
Using recent data on high energy neutrino from IceCube and Pierre Auger
experiments we
derive the upper-limits on neutrino flux from dark matter decay and
constraints on dark matter parameter space. For the dark matter masses
of order 108 GeV the constraints derived are slightly stronger than
those obtained for the same dark matter model using the high energy
gamma-ray limits.