Direct and Indirect Detection and LHC Signals of Bino-Higgsino Dark Matter

Understand

If the lightest dark matter neutralino has a sufficiently large Higgsino component, its spin-independent and spin-dependent cross sections on nucleons can be sizable enough to be detected soon in direct and indirect surveys.

• We outline in this paper some characteristic features expected of mixed bino-Higgsino dark matter.
• If the observed relic density is saturated by the bino-Higgsino dark matter, it fixes the amount of allowable bino-Higgsino mixing and provides predictions for other observables which can be tested at the Large Hadron Collider (LHC).
• We study the correlation between the cross sections and the branching ratio of B_s -> mu^+ mu^-.