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arXiv · 1704.05300

Heavy decaying dark matter and large-scale anisotropy of high-energy cosmic rays

O. E. Kalashev·M. Yu. Kuznetsov
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Abstract

We examine the role of the large--scale anisotropy of the high--energy cosmic ray distribution in a search for the heavy decaying dark matter (DM) signal. Using recent anisotropy measurements from the extensive air shower (EAS) observatories we constrain the lifetime of the DM particles with masses $10^{7}~\leq~M_X~\leq~10^{16}$ GeV. These constraints appear to be weaker than that obtained with the high energy gamma-ray limits. We also estimate the desired precision level for the anisotropy measurements to discern the decaying DM signal marginally allowed by the gamma-ray limits and discuss the prospects of the DM search with the modern EAS facilities.

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O. E. Kalashev, M. Yu. Kuznetsov. 2017-04-18. Heavy decaying dark matter and large-scale anisotropy of high-energy cosmic rays. https://doi.org/10.1134/s0021364017140016

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