A Singlet Extension of the MSSM with a Dark Matter Portal
arXiv:1309.6359 · doi:10.1007/JHEP07(2014)087
Abstract
The minimal extension of the MSSM (NMSSM) has been widely studied in the search for a natural solution to the problem. In this work, we consider a variation of the NMSSM where an extra singlet is added and a Peccei-Quinn symmetry is imposed. We study its neutralino sector and compute the annihilation cross section of the lightest neutralino. We use existent cosmological and collider data to constrain the parameter space and consider the lightest neutralino, which is very light, as a dark matter candidate.
26 pages, 8 figures . v4: minor corrections; version accepted for publication
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