Supersymmetric dark matter and constraints from LEP

Accelerator constraints on the parameter space of the minimal supersymmetric extension of the standard model are analyzed and contrasted with the parameter space yielding dark matter which is allowed by the cosmological constraints on the relic density. The most important accelerator limits are those from searches for charginos chi /sup +or-/ neutralinos chi /sub 2/ and Higgs bosons at LEP. Constraints derived from b to s gamma decay are also incorporated. It is found that m/sub chi / > 51 GeV and tan beta > 2.7 if all soft supersymmetry-breaking scalar masses are universal, including those of the Higgs bosons, and that these limits weaken to, m/sub chi / > 47 Ge V and tan beta > 2.1 if non-universal scalar masses are allowed.