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A Search for Dark Matter in the Sun with AMANDA and IceCube
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (IceCube)
2011 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

A search for weakly interacting massive particles (WIMPs) annihilating in the Sun was performed with the IceCube and AMANDA neutrino telescopes, using data from 2008 corresponding to 149 days of livetime. Assuming that particles in the dark matter halo scatter and accumulate in the centre of the Sun, Majorana WIMPs may pair-wise annihilate and give rise to a neutrino signal detectable in an experiment at Earth. No excess of muon-neutrinos from the Sun was observed, and limits on the νμ-flux were set for masses between 50 GeV and 5 TeV considering WIMPs annihilating into b‾b and W+W-. Separate limits were also calculated for the case of the lightest Kaluza-Klein particle. The flux limits were converted to limits on the spin-dependent and spin-independent WIMP-proton cross sections, σSD and σSI. The search was combined using a joint likelihood method with AMANDA and IceCube data from 2001-2007, yielding the 90% CL upper limits Φμ < 103 km-2y-1 for a WIMP mass of 1000 GeV and σSD < 1.28×10-4 pb for 250 GeV, both for the W+Wspectrum.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis , 2011. , 118 p.
Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-2516 ; 97
Keyword [en]
Dark matter, WIMP, neutralino, MSSM, Kaluza-Klein, IceCube, AMANDA, neutrino telescope
National Category
Subatomic Physics
Research subject
Physics with specialization in Elementary Particle Physics
URN: urn:nbn:se:uu:diva-160833ISBN: 978-91-554-8218-3OAI: diva2:453245
Public defence
2011-12-15, Polhemssalen, Ångström Laboratory, Uppsala, 13:15 (English)
Available from: 2011-11-24 Created: 2011-11-01 Last updated: 2012-01-19

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