General Physics Colloquium and Cooper Lecture, Professor Kent Irwin, Stanford University.
Refreshments from 3:30-3:50 pm
Title: Searching for axion and hidden photon dark matter with electromagnetic resonators: the Dark Matter Radio experiment (DM Radio)
Host: Mike Niemack
Abstract: About 85% of the matter in the universe is made-up of an unknown "dark" component that is mostly non-baryonic. For several decades, searches for this mysterious substance has principally focused on one candidate particle: the Weakly Interacting Massive Particle (WIMP). These searches have successfully ruled out significant phase space for WIMP dark matter, and experiments at the Large Hadron Collider have so far not produced this hypothetical particle. Recently, there has been a surge in theoretical interest in ultra-light-field dark matter, including axions (spin 0 bosons) and hidden photons (spin 1 bosons). The Dark Matter Radio (DM Radio) is a tunable superconducting high-Q lumped-element resonator using SQUIDs for detection. I will discuss the motivation, status and prospects for the DM Radio experiment in searching for both axions and hidden photons, and the remarkable phase space that DM Radio will search over the next several years.