title: Particle components of dark matter.
abstract: Particle candidates for astrophysical dark matter are reviewed, with particular emphasis on the lightest supersymmetric particle and the axion. The former is now constrained by accelerator experiments to have a mass above about 40 GeV, and ongoing searches at accelerators, in space, and in underground experiments have a good chance to detect it. A reevaluation of the constraint on the axion from supernova 1987a leaves open an interesting window where it may be detected if it constitutes the galactic halo.
authors.affiliation: Theoretical Physics Division, European Center for Nuclear Research, CH-1211 Geneva 23, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Ellis