Dr. Thomas Shutt (University of California at Berkeley)

Monday, April 7, 1997 at 4:00 pm in 144 Loomis

The Search for WIMP Dark Matter with Cryogenic Detectors

Abstract

It is well established that most of the mass of the universe is not in thestars and gas observed directly via light of any wavelength. This missingmass is called dark matter, and there is considerable evidence that it isin fact not in the form of ordinary baryons (i.e., not composed of neutronsor protons.) One intriguing possibility is that it consists of a vastnumber of weakly-interacting particles left over from the big bang withmasses on the order of 10-1000 GeV/c^2. Just such particles are a genericprediction of supersymmetry. I will discuss the CDMS experiment, which isnow collecting data based on a new cryogenic detector technology which hasa powerful background rejection technique.