Research summary
Despite its success in explaining the known universe, the Standard Model of particle physics accounts for only 5% of the universe’s energy, leaving fundamental questions unanswered. One of the most promising avenues for new physics beyond the Standard Model is the search for neutrinoless double-beta decay (0?ßß)—a rare process that, if observed, would redefine our understanding of matter and the evolution of the universe.
Dr. Thomas Brunner, Canada Research Chair in Subatomic Physics, is leading Canada’s contributions to nEXO, a global experiment designed to be the world’s most sensitive 0?ßß detector, operating deep underground at SNOLAB in Sudbury, Ontario. He and his research team are developing radiation shielding, validating detector technology, and optimizing sensor performance to enhance nEXO’s discovery potential. By advancing Canada’s role in cutting-edge subatomic physics, Brunner’s research could help unlock one of the greatest mysteries of the universe, with profound implications for physics and cosmology.