Dark Matter and SUSY: LEP results

Abstract

The negative outcome of searches for supersymmetry performed at LEP have been used to derive indirect constraints on the parameters of the most plausible supersymmetric candidates for cold dark matter, in particular for the lightest neutralino. We review the basic ideas leading to the present lower limit on the lightest neutralino mass of about 37 GeV, with emphasis on the underlying assumptions.Comment: 12 pages, 8 figures, to appear in the proceedings of Vulcano Workshop 2000: Frontier Objects In Astrophysics And Particle Physics, 22-27 May 2000, Vulcano, Ital