BARYONIC AND COLD DARK-MATTER

Baryonic and cold dark matter is reviewed in the context of cosmologic al models. Theoretical searches for particle candidates are Limited by the supersymmetric extension of the Standard Model. Generically, in t hese models, there are just two candidates associated with each other: the generalized neutralino, whose components are a usual neutralino a nd an axino, and the axion, which is a partner of the axion in the sup ermultiplet. The status of these particles as dark-matter candidates i s described. The light gravitino is briefly discussed.