Dark Matter in the Finely Tuned Minimal Supersymmetric Standard Model

We explore dark matter in the Finely Tuned Minimal Supersymmetric Standard model recently proposed by Arkani-Hamed and Dimopoulos. Relative to the MSSM, there are fewer particles at freezeout, so the calculation of the relic abundance simplifies. Similarly, the predictions for direct detection of the dark matter sharpen. There is a large region of mixed bino–higgsino dark matter where the lightest supersymmetric particle will be accessible at both the LHC and future direct detection experiments, allowing for a conclusive identification of the dark matter particle. Typical dark matter-nucleon cross sections are 10−45−10−44 cm. This model also possesses a novel region where the dark matter annihilates via an s-channel Higgs boson resonance. ∗AP is supported by the U.S. Department of Energy under contract number DE-AC0376SF00515.