Details

Autor(en) / Beteiligte

• Ackermann, M.
• Altmann, D.
• Auffenberg, J.
• Barwick, S. W.
• Becker Tjus, J.
• Becker, K.-H.
• Binder, G.
• Bindig, D.
• Blaufuss, E.
• Böser, S.
• Christy, B.
• Clark, K.
• Classen, L.
• Coenders, S.
• Cruz Silva, A. H.
• Daughhetee, J.
• Davis, J. C.
• de Vries, K. D.
• DeYoung, T.
• Eberhardt, B.
• Fedynitch, A.
• Feintzeig, J.
• Fischer-Wasels, T.
• Flis, S.
• Franckowiak, A.
• Gaisser, T. K.
• Gerhardt, L.
• Glüsenkamp, T.
• Goldschmidt, A.
• Gretskov, P.
• Hallen, P.
• Halzen, F.
• Helbing, K.
• Hickford, S.
• Hill, G. C.
• Hoffman, K. D.
• Hoffmann, R.
• Hoshina, K.
• Hultqvist, K.
• Hussain, S.
• Jurkovic, M.
• Kaminsky, B.
• Karle, A.
• Kiryluk, J.
• Kläs, J.
• Köhne, J.-H.
• Köpke, L.
• Koskinen, D. J.
• Kurahashi, N.
• Labare, M.
• Larsen, D. T.
• Lünemann, J.
• Macías, O.
• Madsen, J.
• Meli, A.
• Miarecki, S.
• Middell, E.
• Morse, R.
• Nahnhauer, R.
• Nowicki, S. C.
• Palczewski, T.
• Penek, Ö.
• Pfendner, C.
• Pieloth, D.
• Posselt, J.
• Price, P. B.
• Rees, I.
• Rhode, W.
• Richman, M.
• Riedel, B.
• Rongen, M.
• Ruhe, T.
• Ruzybayev, B.
• Sander, H.-G.
• Santander, M.
• Sarkar, S.
• Schatto, K.
• Schmidt, T.
• Schönwald, A.
• Schulte, L.
• Smith, M. W. E.
• Spiczak, G. M.
• Stasik, A.
• Stokstad, R. G.
• Strahler, E. A.
• Strotjohann, N. L.
• Toale, P. A.
• Tobin, M. N.
• Tosi, D.
• Unger, E.
• Vallecorsa, S.
• Voge, M.
• Wellons, M.
• Wendt, C.
• Wichary, C.
• Wolf, M.
• Xu, D. L.
• Yanez, J. P.
• Zarzhitsky, P.
• Zierke, S.

Titel

Multipole analysis of IceCube data to search for dark matter accumulated in the Galactic halo: IceCube Collaboration

Ist Teil von

• The European physical journal. C, Particles and fields, 2015, Vol.75 (1), p.1-16, Article 20

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Dark matter which is bound in the Galactic halo might self-annihilate and produce a flux of stable final state particles, e.g. high energy neutrinos. These neutrinos can be detected with IceCube, a cubic-kilometer sized Cherenkov detector. Given IceCube’s large field of view, a characteristic anisotropy of the additional neutrino flux is expected. In this paper we describe a multipole method to search for such a large-scale anisotropy in IceCube data. This method uses the expansion coefficients of a multipole expansion of neutrino arrival directions and incorporates signal-specific weights for each expansion coefficient. We apply the technique to a high-purity muon neutrino sample from the Northern Hemisphere. The final result is compatible with the null-hypothesis. As no signal was observed, we present limits on the self-annihilation cross-section averaged over the relative velocity distribution ⟨ σ A v ⟩ down to 1.9 × 10 - 23 cm 3 s - 1 for a dark matter particle mass of 700–1,000 GeV and direct annihilation into ν ν ¯ . The resulting exclusion limits come close to exclusion limits from γ -ray experiments, that focus on the outer Galactic halo, for high dark matter masses of a few TeV and hard annihilation channels.