Gravitino Dark Matter and general neutralino NLSP

Details Gravitino Dark Matter and general neutralino NLSP Gravitino Dark Matter and general neutralino NLSP

2009-08-24

arxiv.org/abs/0908.3399v1

JHEP 0911:003,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 15 figures, pdflatex

Scientific paper

10.1088/1126-6708/2009/11/003

We study the scenario of gravitino DM with a general neutralino NLSP in a model independent way. We consider all neutralino decay channels and compare them with the most recent BBN constraints. We check how those bounds are relaxed for a Higgsino or a Wino NLSP in comparison to the Bino neutralino case and look for possible loopholes in the general MSSM parameter space.We determine constraints on the gravitino and neutralino NLSP mass and comment on the possibility of detecting these scenarios at colliders.

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