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All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore

Journal Article · · European Physical Journal. C, Particles and Fields
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We present the first IceCube search for a signal of dark matter annihilations in the Milky Way using all-flavour neutrino-induced particle cascades. The analysis focuses on the DeepCore sub-detector of IceCube, and uses the surrounding IceCube strings as a veto region in order to select starting events in the DeepCore volume. We use 329 live-days of data from IceCube operating in its 86-string configuration during 2011–2012. No neutrino excess is found, the final result being compatible with the background-only hypothesis. From this null result, we derive upper limits on the velocity-averaged self-annihilation cross-section, < σ A v > , for dark matter candidate masses ranging from 30 GeV up to 10 TeV, assuming both a cuspy and a flat-cored dark matter halo profile. For dark matter masses between 200 GeV and 10 TeV, the results improve on all previous IceCube results on < σ A v > , reaching a level of 10 - 23 cm 3 s - 1 , depending on the annihilation channel assumed, for a cusped NFW profile. The analysis demonstrates that all-flavour searches are competitive with muon channel searches despite the intrinsically worse angular resolution of cascades compared to muon tracks in IceCube.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
IceCube Collaboration
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1377519
Alternate ID(s):
OSTI ID: 22556473
Journal Information:
European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 10 Vol. 76; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

A consistent theory of decaying Dark Matter connecting IceCube to the Sesame Street journal April 2017
Searches for exotica and dark matter with neutrino telescopes journal November 2019
Search for neutrinos from dark matter self-annihilations in the center of the Milky Way with 3 years of IceCube/DeepCore: IceCube Collaboration journal September 2017
Asymmetric dark matter: residual annihilations and self-interactions journal January 2018
Asymmetric Dark Matter: Residual Annihilations and Self-Interactions text January 2017
Asymmetric dark matter: residual annihilations and self-interactions text January 2018
Ultralight Axion Dark Matter and Its Impact on Dark Halo Structure in N -body Simulations journal January 2018
Asymmetric dark matter: residual annihilations and self-interactions text January 2017


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