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Abstract：
The mass spectra of leptons and quarks have a span of at least 12 orders of magnitude, unlike the small and hierarchical mixing between quarks, neutrino oscillation experiments reveal large mixing angles. But the Standard Model does not provide a fundamental organizing principle to explain why the masses of quarks and leptons are so different, or why their mixing patterns are so distinct. This is known as the flavor puzzle, and it is a longstanding mystery in particle physics. In this talk, I shall present various theoretical approaches to understand the mass, mixing angles, and CP violation phases of leptons and quarks, and discuss the phenomenological implications in future experiments such as neutrino oscillation, neutrinoless double decay and Cosmology.
Biography:
Gui-Jun Ding is a professor at the School of Physics, University of Science and Technology of China (USTC). He obtained his PhD degree from USTC in 2007. He served as a postdoctoral researcher at USTC from 2007 to 2009. Then he started as an associate professor and was promoted to a full professor in 2016. His research interests mainly focus on the origin of fermion masses and flavor mixing, neutrino physics, and particle cosmology. He was invited to give a theoretical overview on the lepton flavor mixing at the 31st International Conference on Neutrino Physics in 2024. He has published 110 papers in journals such as JHEP and PRD, with more than 5600 citations. He has been invited to write lengthy reviews for Physics Reports and Reports on Progress in Physics.
Host: Prof. Yifeng Sun
Alternative online link: https://meeting.tencent.com/dm/Uqb10KtgZas4 (id: 313242272 passcode: 123456）