Light stops, blind spots, and isospin violation in the MSSM

Understand

In the framework of the MSSM, we examine several simplified models where only a few superpartners are light.

• This allows us to study WIMP--nucleus scattering in terms of a handful of MSSM parameters and thereby scrutinize their impact on dark matter direct-detection experiments.
• Focusing on spin-independent WIMP--nucleon scattering, we derive simplified, analytic expressions for the Wilson coefficients associated with Higgs and squark exchange.
• We utilize these results to study the complementarity of constraints due to direct-detection, flavor, and collider experiments.