Search for neutrinos from decaying dark matter with IceCube
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10052_2018_Article_6273.pdf
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1.08 MB
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Checksum (MD5)
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Author(s)
Aartsen, M. G
Ackermann, M.
Adams, J.
Aguilar, J. A
Ahlers, M.
Ahrens, M.
Samarai, I. A
Altmann, D.
Andeen, K.
Anderson, T.
Date Issued
October 2018
Journal
European Physical Journal C: Particles and Fields
Publisher
Springer Berlin Heidelberg
Citation
Aartsen, M. G. et al. "Search for neutrinos from decaying dark matter with IceCube." European Physical Journal C: Particles and Fields 78 (October 2018): 831 © 2018 The Author(s)
Version
Final published version
Abstract
With the observation of high-energy astrophysical neutrinos by the IceCube Neutrino Observatory, interest has risen in models of PeV-mass decaying dark matter particles to explain the observed flux. We present two dedicated experimental analyses to test this hypothesis. One analysis uses 6 years of IceCube data focusing on muon neutrino ‘track’ events from the Northern Hemisphere, while the second analysis uses 2 years of ‘cascade’ events from the full sky. Known background components and the hypothetical flux from unstable dark matter are fitted to the experimental data. Since no significant excess is observed in either analysis, lower limits on the lifetime of dark matter particles are derived: we obtain the strongest constraint to date, excluding lifetimes shorter than 10²⁸ s at 90% CL for dark matter masses above 10 TeV.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1140/epjc/s10052-018-6273-3
