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Journal article
All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore
The European physical journal. C, Particles and fields, v 76(10)
2016
Abstract
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, , 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 , reaching a level of 10 cm s, 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.
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Details
- Title
- All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore
- Creators
- Maryon Ahrens - Oskar Klein-centrum för kosmopartikelfysik (OKC)Christian Bohm - Stockholm UniversityJonathan P. Dumm - Stockholm UniversityChad Finley - Stockholm UniversitySamuel Flis - Stockholm UniversityKlas Hultqvist - Stockholm UniversityChristian Walck - Stockholm UniversityMartin Wolf - Oskar Klein-centrum för kosmopartikelfysik (OKC)Marcel Zoll - Stockholm UniversityLawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Details
- The European physical journal. C, Particles and fields, v 76(10)
- Publisher
- Springer Nature
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000388972200001
- Scopus ID
- 2-s2.0-84989864726
- Other Identifier
- 991019169517904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Particles & Fields