Z2-Singlino Dark Matter in a Portal-Like Extension of the Minimal Supersymmetric Standard Model
Abstract
We propose a Z2-stabilised singlino () as a dark matter candidate in extended and R-parity violating versions of the supersymmetric standard model. 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 can account for cold dark matter if the messenger mass satisfies MS 104 GeV. Our model can be implemented in many realistic supersymmetric models such as the NMSSM and nMSSM.
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