Z_2-Singlino Dark Matter in a Portal-Like Extension of the Minimal Supersymmetric Standard Model

Details Z_2-Singlino Dark Matter in a Portal-Like Extension of the Minimal Supersymmetric Standard Model Z_2-Singlino Dark Matter in a Portal-Like Extension of the Minimal Supersymmetric Standard Model

2008-02-26

arxiv.org/abs/0802.3847v3

JCAP 0806:026,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages LaTeX, 7 figures, version to be published in JCAP

Scientific paper

10.1088/1475-7516/2008/06/026

We propose a Z_2-stabilised singlino (\bar{\chi}) as a dark matter candidate in extended and R-parity violating versions of the supersymmetric standard model. \bar{\chi} interacts with visible matter via a heavy messenger field S, which results in a supersymmetric version of the Higgs portal interaction. The relic abundance of \bar{\chi} can account for cold dark matter if the messenger mass satisfies M_S \lsim 10^{4} GeV. Our model can be implemented in many realistic supersymmetric models such as the NMSSM and nMSSM.

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