In spite of the many successes of the Standard Model (SM) of particle physics, several important ingredients of our universe are still mysteries, including dark matter, the origin of the matter-antimatter asymmetry, and the physics underlying neutrino masses. These phenomena point to collections of as-yet unidentified new particles and forces called hidden sectors. Taking as a concrete example the recently proposed mechanism of freeze-in baryogenesis via dark matter oscillations, I will show how relatively simple extensions of the SM can give rise to rich dynamics in the early universe that resolve the open questions of the SM and point towards energy and length scales that are experimentally accessible today. I will then describe new efforts and proposals to discover cosmologically motivated hidden-sector particles using collider experiments, with complementarity between high- and low-energy colliders.
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2022-02-23T12:00:002022-02-23T13:00:00 Hidden Sectors: From the Early Universe to TodayEvent Information:
Hidden Sectors: From the Early Universe to Today
In spite of the many successes of the Standard Model (SM) of particle physics, several important ingredients of our universe are still mysteries, including dark matter, the origin of the matter-antimatter asymmetry, and the physics underlying neutrino masses. These phenomena point to collections of as-yet unidentified new particles and forces called hidden sectors. Taking as a concrete example the recently proposed mechanism of freeze-in baryogenesis via dark matter oscillations, I will show how relatively simple extensions of the SM can give rise to rich dynamics in the early universe that resolve the open questions of the SM and point towards energy and length scales that are experimentally accessible today. I will then describe new efforts and proposals to discover cosmologically motivated hidden-sector particles using collider experiments, with complementarity between high- and low-energy colliders.
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https://ubc.zoom.us/j/64832214108?pwd=VWR1TmoxNVo1ZHpaUHA0dU1xTkRqdz09
Meeting ID: 648 3221 4108
Passcode: 024707
Event Location:
Zoom