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A search for solar dark matter with the IceCube neutrino telescope
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- Wikström, Gustav, 1979- (author)
- Stockholms universitet,Fysikum,Elementary particle physics
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- Hultqvist, Klas, Professor (thesis advisor)
- Stockholms universitet,Fysikum
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- Carr, John, Professor (opponent)
- CPPM
- (creator_code:org_t)
- ISBN 9789171558817
- Stockholm : Department of Physics, Stockholm University, 2009
- English 100 s.
- Doctoral thesis (other academic/artistic)
Abstract
Subject headings
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- Dark matter particles in the form of supersymmetric Weakly Interacting Massive Particles (WIMPs) could accumulate in the centre of the Sun because of gravitational trapping. Pair-wise annihilations of WIMPs could create standard model particles out of which neutrinos could reach the Earth. Data from the IceCube 22-string neutrino telescope have been searched for signals from dark matter annihilations in the Sun. Highly sophisticated analysis methods have been developed to discern signal neutrinos from the severe background of atmospheric particle showers. No signal has been found in a dataset of 104 days livetime taken in 2007, and an upper limit has been placed on the muon flux in the South Pole ice induced by neutrinos from the Sun, reaching down to 330 km-2y-1. The flux limit has been converted into an upper limit on the neutralino scattering cross-section, which reaches down to 2.8*10-40 cm2 for spin-dependent interactions.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Dark matter
- neutrinos
- neutrino telescopes
- IceCube
- Astroparticle physics
- Astropartikelfysik
- fysik
- Physics
Publication and Content Type
- vet (subject category)
- dok (subject category)
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