Dr. Tsuguo Aramaki (SLAC)
"Hunting for Dark Matter With SuperCDMS" (ICRR & IPMU joint seminar)
The existence of dark matter has been inferred through many astrophysical phenomena, but the nature and origin of dark matter are still unknown. For over a decade, the SuperCDMS (Cryogenic Dark Matter Search) collaboration has been one of the leading direct dark matter search experiments using low-temperature semiconductor detectors to identify the dark matter-nucleus interaction. The nuclear recoil energy induced by dark matter-nucleus scattering is measured through phonon (lattice vibration) and ionization signals. SuperCDMS has the best dark matter-nucleon cross section limits in the world for low-mass dark matter particles with masses between 2-5GeV/c2. With unique discovery potential for low-mass dark matter and complementary search at higher-mass dark matter, SuperCDMS plays a vital role in dark matter search. We are now moving forward with the SuperCDMS SNOLAB experiment, a DOE/NSF funded direct detection dark matter search program. In this talk, I will present the recent result of the CDMS low-ionization threshold experiment (CDMSlite) and then discuss the scientific goals and the recent status of the SuperCDMS SNOLAB project.