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|Title:||Search for dark matter annihilation in the Galactic Center with IceCube-79|
Becker Tjus, J.
|Citation:||European Physical Journal C, 2015; 75(10):492-1-492-12|
|M. G. Aartsen ... G. C. Hill ... S. Robertson ... B. J. Whelan ... et al. (IceCube Collaboration)|
|Abstract:||The Milky Way is expected to be embedded in a halo of dark matter particles, with the highest density in the central region, and decreasing density with the halo-centric radius. Dark matter might be indirectly detectable at Earth through a flux of stable particles generated in dark matter annihilations and peaked in the direction of the Galactic Center. We present a search for an excess flux of muon (anti-) neutrinos from dark matter annihilation in the Galactic Center using the cubic-kilometer-sized IceCube neutrino detector at the South Pole. There, the Galactic Center is always seen above the horizon. Thus, new and dedicated veto techniques against atmospheric muons are required to make the southern hemisphere accessible for IceCube. We used 319.7 live-days of data from IceCube operating in its 79-string configuration during 2010 and 2011. No neutrino excess was found and the final result is compatible with the background. We present upper limits on the self-annihilation cross-section, ⟨σAv⟩, for WIMP masses ranging from 30 GeV up to 10 TeV, assuming cuspy (NFW) and flat-cored (Burkert) dark matter halo profiles, reaching down to ≃4⋅10−24 cm3 s−1, and ≃2.6⋅10−23 cm3 s−1 for the νν¯¯¯ channel, respectively.|
|Rights:||© The Author(s) 2015. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3.|
|Appears in Collections:||Chemistry and Physics publications|
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