PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Dark Matter. DM-indirect searches
Search for Signatures of Heavy Decaying Dark Matter with IceCube
J. Stettner,* H. Dujmovic on behalf of the IceCube Collaboration
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
Neutrino telescopes provide some of the best sensitivities for heavy decaying dark matter. With IceCube's observation of high-energy astrophysical neutrinos, interest in scenarios that could explain their origin as a result of the decay of long-lived heavy dark matter particles has risen. We present two dedicated experimental analyses to test this scenario of decaying dark matter with masses above 10 TeV. One analysis uses 6 years of IceCube data focusing on muon-neutrino tracks from the northern hemisphere and one analysis uses 2 years of cascade data from the full sky. The following contributions to the neutrino flux are considered: Atmospheric neutrinos, a diffuse astrophysical flux following a power-law spectrum and a potential flux of neutrinos produced in dark matter decays. The latter can be distinguished by its distinctive features in the energy spectrum (cut-off at half the mass of the DM-particle) and asymmetry of the arrival directions due to the DM halo of our galaxy. We present best-fit results and deduce lower lifetime limits on the order of $10^{28}$ sec for dark matter masses above 10 TeV. \\
DOI: https://doi.org/10.22323/1.301.0923
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.