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VOLUME 105 | ISSUE 9 | PAGE 533
Hadronically decaying heavy dark matter and high-energy neutrino limits
We consider dark matter consisting of long-living particles with masses 10^{7}\lesssim M\lesssim 10^{16} 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.