All-flavour search for neutrinos from dark matter annihilations in the Milky Way with IceCube/DeepCore
- Author(s): Aartsen, MG
- Abraham, K
- Ackermann, M
- Adams, J
- Aguilar, JA
- Ahlers, M
- Ahrens, M
- Altmann, D
- Andeen, K
- Anderson, T
- Ansseau, I
- Anton, G
- Archinger, M
- Arguelles, C
- Arlen, TC
- Auffenberg, J
- Axani, S
- Bai, X
- Barwick, SW
- Baum, V
- Bay, R
- Beatty, JJ
- Becker Tjus, J
- Becker, KH
- BenZvi, S
- Berghaus, P
- Berley, D
- Bernardini, E
- Bernhard, A
- Besson, DZ
- Binder, G
- Bindig, D
- Bissok, M
- Blaufuss, E
- Blot, S
- Boersma, DJ
- Bohm, C
- Börner, M
- Bos, F
- Bose, D
- Böser, S
- Botner, O
- Braun, J
- Brayeur, L
- Bretz, HP
- Burgman, A
- Casey, J
- Casier, M
- Cheung, E
- Chirkin, D
- Christov, A
- Clark, K
- Classen, L
- Coenders, S
- Collin, GH
- Conrad, JM
- Cowen, DF
- Cruz Silva, AH
- Daughhetee, J
- Davis, JC
- Day, M
- de André, JPAM
- De Clercq, C
- del Pino Rosendo, E
- Dembinski, H
- De Ridder, S
- Desiati, P
- de Vries, KD
- de Wasseige, G
- de With, M
- DeYoung, T
- Díaz-Vélez, JC
- di Lorenzo, V
- Dujmovic, H
- Dumm, JP
- Dunkman, M
- Eberhardt, B
- Ehrhardt, T
- Eichmann, B
- Euler, S
- Evenson, PA
- Fahey, S
- Fazely, AR
- Feintzeig, J
- Felde, J
- Filimonov, K
- Finley, C
- Flis, S
- Fösig, CC
- Franckowiak, A
- Fuchs, T
- Gaisser, TK
- Gaior, R
- Gallagher, J
- Gerhardt, L
- Ghorbani, K
- et al.
Published Web Location
https://doi.org/10.1140/epjc/s10052-016-4375-3Abstract
© The Author(s) 2016. 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, ⟨ σAv ⟩ , 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 ⟨ σAv ⟩ , reaching a level of 10- 23cm3s- 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.