THE SEARCH FOR DARK MATTER

Abstract

The particle constituting probably more than 90% of the mass of the universe is unknown in the Standard Model of particle physics. Non-accelerator experiments, particularly those using Ge and Si detectors, and accelerator experiments, especially at SLC and LEP, have eliminated as dark matter wide classes of candidate particles. Examples are weak isodoublet neutrinos of mass ≳30 eV/c 2, sneutrinos, technibaryons, microcharged shadow matter, and probably Cosmions, which could both be dark matter and solve the solar neutrino problem.