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Physics Colloquium Series

Date: Thursday, November 7, 2019

Speaker: Zoltan Ligeti, Lawrence Berkeley National Laboratory

Title: Flavor Physics: Past, Present, Future

Abstract: Despite its spectacular successes, the standard model of particle physics does not contain a possible candidate for dark matter, nor can it explain the observed asymmetry between matter and antimatter in the Universe.

The interactions of the Higgs boson, which give quarks and leptons their masses, also lead to violation of the symmetry between matter and antimatter in electroweak interactions.  This can explain the differences observed between matter and antimatter in laboratory experiments, but it is insufficient to explain the dominance of matter over antimatter in the Universe.  Thus, additional interactions must exist, which differentiate between matter and antimatter.  The Large Hadron Collider will test the properties of the Higgs boson with ever increasing precision.  After a brief review of the standard model, I discuss some of the current constraints on extensions of the standard model, what we may learn in the next decade, and how this information could be combined with possible other discoveries to answer some deep questions.

Location: Room 100, Willamette hall

Host: Graham Kribs

Please join us for a catered reception at 3:40pm in the Paul Olum, Willamette Hall Atrium.

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