Axino Dark Matter and the CMSSM

Details Axino Dark Matter and the CMSSM Axino Dark Matter and the CMSSM

2004-02-23

arxiv.org/abs/hep-ph/0402240v2

JHEP 0406 (2004) 003

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, JHEP style, 18 pages, 7 figures, small changes and references added, version to appear in JHEP

Scientific paper

10.1088/1126-6708/2004/06/003

If the axino is the lightest superpartner and satisfies cosmological bounds, including a preferred range of the relic abundance of cold dark matter, then the usual stringent constraints on the parameter space of the CMSSM become greatly relaxed. The lightest superpartner of the usual CMSSM spectrum will appear to be stable in collider experiments but will not necessarily obey relic abundance constraints. It may be either neutral (lightest neutralino) or charged (typically a stau). With the axino as cold dark matter, large regions of the CMSSM, often corresponding to heavy superpartners, become allowed, depending on the axino mass and the reheating temperature.

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