Multiyear search for dark matter annihilations in the Sun with the AMANDA-II and IceCube detectors
By R. Abbasi, Y. Abdou, T. Abu-Zayyad, M. Ackermann, J. Adams, K. Andeen, J. Aguilar, M. Ahlers, D. Altmann, J. Auffenberg and 250 more. 2011
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A search for an excess of muon neutrinos from dark matter annihilations in the Sun has been performed with the AMANDA-II neutrino telescope using data collected in 812 days of live time between 2001 and 2006 and 149 days of live time collected with the AMANDA-II and the 40-string configuration of IceCube during 2008 and early 2009. No excess over the expected atmospheric neutrino background has been observed. We combine these results with the previously published IceCube limits obtained with data taken during 2007 to obtain a total live time of 1065 days. We provide an upper limit at 90% confidence level on the annihilation rate of captured neutralinos in the Sun, as well as the corresponding muon flux limit at the Earth, both as functions of the neutralino mass in the range 50-5000 GeV. We also derive a limit on the neutralino-proton spin-dependent and spin-independent cross section. The limits presented here improve the previous results obtained by the collaboration between a factor of 2 and 5, as well as extending the neutralino masses probed down to 50 GeV. The spin-dependent cross section limits are the most stringent so far for neutralino masses above 200 GeV, and well below direct search results in the mass range from 50 GeV to 5 TeV.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/1303c21008227ee3788f25843b11108201f029a8
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In Nuclear and High Energy Physics
Citations in the corpus
- Colloquium: Annual modulation of dark matter (2013, background): “This particular case is also uniquely suited to be probed by indirect searches involving detection of neutrinos produced byWIMPs annihilating in the Sun, e.g., with the Super-Kamiokande (Desai et al., 2004) and IceCube detectors (Abbasi et al., 2012).”
- Constraints on low-mass WIMP interactions on 19F from PICASSO (2012, background): “ allowed regions are also shown (light grey: with ion channelling). Also shown are the spin dependent search results in both soft and hard annihilation channels from SuperK [30] and AMANDA-II/IceCube [31]; and theoretical predictions discussed in [32, 33]. 9. Limits in the Spin Independent Sector Sp”