Axinos as Cold Dark Matter

Details Axinos as Cold Dark Matter Axinos as Cold Dark Matter

2006-10-10

arxiv.org/abs/hep-ph/0610114v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 4 figures, contribution to the Proceedings of the International Workshop "The dark side of the Universe", Madrid, Jun

Scientific paper

10.1063/1.2409080

The connection of Dark Matter to our particle physics model is still one of the open cosmological questions. In these proceedings I will argue that axinos can be successful Cold Dark Matter candidates in models with Supersymmetry and the Peccei-Quinn solution of the strong CP problem. If they are the Lightest Supersymmetric Particle (LSP), they can be produced in the right abundance by thermal scatterings and out of equilibrium decays of the Next-to-Lightest Supersymmetric Particles (NLSPs). Moreover if the NLSPs are charged, their decay could help us understand which is the LSP, e.g. between axino and gravitino.

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