Hadronically decaying heavy dark matter and high-energy neutrino limits

Abstract

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 $10^8$ GeV the constraints derived are slightly stronger than those obtained for the same dark matter model using the high energy gamma-ray limits.

arXiv comment12 pages, 5 figures, minor corrections in text, results unchanged, published in JETP Letters

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