Search for dark matter annihilation in the Galactic Center with IceCube-79
Journal Article
·
· European Physical Journal. C, Particles and Fields
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. Here, 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 ν ν¯ channel, respectively.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC)
- Contributing Organization:
- IceCube Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1332123
- Alternate ID(s):
- OSTI ID: 22431163
OSTI ID: 1377614
- Journal Information:
- European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 10 Vol. 75; ISSN 1434-6044
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- Germany
- Language:
- English
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