Neutralino Dark Matter in BMSSM Effective Theory

Understand

We study thermal neutralino dark matter in an effective field theory extension of the MSSM, called "Beyond the MSSM" (BMSSM) in Dine, Seiberg and Thomas (2007).

• In this class of effective field theories, the field content of the MSSM is unchanged, but the little hierarchy problem is alleviated by allowing small corrections to the Higgs/higgsino part of the Lagrangian.
• We perform parameter scans and compute the dark matter relic density.
• The light Higgsino LSP scenario is modified the most; we find new regions of parameter space compared to the standard MSSM.