Dark Matter, Muon g - 2 And Other Accelerator Constraints

Abstract

We review the current status of the Brookhaven muon g - 2 experiment, and it's effects on the SUSY parameter space when combined with dark matter relic density bounds, b->s\gamma and Higgs mass constraints. If the 3\sigma deviation of g - 2 from the Standard Model value is correct, these data constrain the mSUGRA parameter space strongly, i.e. 300 GeV <~m_{1/2}<~850 GeV, and m_0 (at fixed \tan\beta, A_0) is tightly constrained (except at very large \tan\beta). Dark matter detection cross sections lie within the range accessible to future planned experiments. A non-universal gluino soft breaking mass however can greatly reduce the lower bound on m_{1/2} (arising from the b->s\gamma constraint) allowing for relatively light neutralinos, while non-universal Higgs H_2 mass can lead to new regions of allowed relic density where the detection cross sections can be increased by a factor of 10 or more.