Axino Cold Dark Matter Revisited

Details Axino Cold Dark Matter Revisited Axino Cold Dark Matter Revisited

2011-08-10

arxiv.org/abs/1108.2282v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 10 figures, version accepted by JHEP

Scientific paper

Axino arises in supersymmetric versions of axion models and is a natural candidate for cold or warm dark matter. Here we revisit axino dark matter produced thermally and non-thermally in light of recent developments. First we discuss the definition of axino relative to low energy axion one for several KSVZ and DFSZ models of the axion. Then we review and refine the computation of the dominant QCD production in order to avoid unphysical cross-sections and, depending on the model, to include production via SU(2) and U(1) interactions and Yukawa couplings.

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