Constraints on sterile neutrino as a dark matter candidate from the diffuse X-ray background

Abstract

Sterile neutrinos with masses in the keV range are viable candidates for the warm dark matter. We analyze existing data for the extragalactic diffuse X-ray background for signatures of sterile neutrino decay. The absence of detectable signal within current uncertainties of background measurements puts model-independent constraints on allowed values of sterile neutrino mass and mixing angle, which we present in this work.

6 pages, 2 figures; v2 -- journal version. References added, discussion expanded

References in corpus (1)

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