Department of Astronomy & Physics
Time: April 6, 2018 - 3:00 PM
Location: Atrium 101
The discovery of the higgs boson completed the standard model of particle physics (SM), a set of fundamental sub-atomical particles and force carriers that describe the nature of all known matter. However, there are many remaining questions that hint at physics beyond the assembled SM. In particular, supported by multiple cosmological and astrophysical evidence, is the resistance of Dark Matter (DM) which comprises up to 27% of the entire universe. DM is expected to be made of non-relativistic particles which do not interact with light. At the present time, Weakly Interacting Massive Particles (WIMPs) are the most theoretically motivated among DM candidates. High-energy collider experiments have mostly excluded WIMPs with masses below 80 GeV/c2, in minimal models, pushing direct detection experiment to search for high-mass WIMPs (>100 GeV/c2). In this talk, we will review how low-background liquid argon experiments are currently being used to perform a precision measurement of beyond the SM physics, by directly searching for WIMP-nuclei coherent elastic scattering. Particular emphasis will be given to the DEAP-3600 experiment, currently operating 2 km underground at the SNOLAB facility in Sudbury, Ontario, Canada.