WIMP capture by the Sun in the effective theory of dark matter self-interactions
Journal article, 2016

We study the capture of WIMP dark matter by the Sun in the non-relativistic effective theory of dark matter self-interactions. The aim is to assess the impact of self- interactions on the expected neutrino flux from the annihilation of WIMPs trapped in the Sun in a model independent manner. We consider all non-relativistic Galilean invariant self- interaction operators that can arise from the exchange of a heavy particle of spin less than or equal to 1 for WIMPs of spin equal to 0, 1/2 and 1. We show that for interaction operators depending at most linearly on the momentum transfer, the WIMP-induced neutrino flux can be enhanced by several orders of magnitude compared to the same flux in absence of self- interactions. This is true even for standard values of the thermally averaged annihilation cross- section. This conclusion impacts the analysis of present and future observations performed at neutrino telescopes.


Riccardo Catena

Chalmers, Physics, Subatomic and Plasma Physics

Axel Widmark

Chalmers, Physics

Journal of Cosmology and Astroparticle Physics

1475-7516 (ISSN)

Vol. 2016 12 Article number 016-

Subject Categories

Subatomic Physics

Astronomy, Astrophysics and Cosmology


Basic sciences



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