Constraints on axino warm dark matter from X-ray observation at the Chandra telescope

Details Constraints on axino warm dark matter from X-ray observation at the Chandra telescope Constraints on axino warm dark matter from X-ray observation at the Chandra telescope

2011-08-05

arxiv.org/abs/1108.1368v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 7 figures

Scientific paper

A sufficiently long lived warm dark matter could be a source of X-rays observed by Chandra and other X-ray telescopes. We consider axinos and gravitinos with masses between 2 keV and 100 keV in supersymmetric models with small R-parity violation. We show that axino dark matter receives significant constraints from X-ray observations, especially for the lower end of the allowed range of the axino decay constant $f_{a}$, while the gravitino dark matter remains unconstrained.

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