报告题目：Grand Unified Theories beyond SU(5)

报告人：陈宁 副教授（南开大学）

报告时间：2022年12月01日（周四）下午15:00-16:00

报告地点：在线报告（腾讯会议ID：442 4477 5872）

报告摘要：

The discovery and the current measurements of the SM Higgs boson at the LHC indicate an intrinsic problem of the flavor sector. This is deeply related to the origin of three generations in and beyond the SM. In this talk, I motivate a study of the flavor unification beyond the minimal SU(5) Georgi-Glashow model, where the SM flavors can be embedded non-trivially. The realistic symmetry breaking pattern is crucial to understand the origin of the observed SM fermion masses. We conjectured a modified third law of Georgi's 1979 efforts in such model building, and utilized the emergent global symmetries to generate additional EWSB VEVs for the light SM fermions other than the top quark. Some phenomenological implications will be described.

参考文献：

1. Ning Chen, High-quality grand unified theories with three generations *, Chin. Phys. C 46 (2022) 5, 053107, arXiv:2108.08690 [hep-ph].

2. Ning Chen, Ying-nan Mao, Zhaolong Teng, Bottom quark and tau lepton masses in a toy SU(6), arXiv:2112.14509 [hep-ph].

3. Ning Chen, Ying-nan Mao, Zhaolong Teng, Bin Wang, Xiangjun Zhao, A two-generational SU(7) model with extended weak sector: mass hierarchies, mixings, and the flavor non-universality, arXiv:2209.11446 [hep-ph].

报告人简介：

2002-2006,  中国科学技术大学近代物理系，学士。
2006-2011, Stony Brook University, 博士。
2011-2014, 清华大学工程物理系，博士后。
2014-2017, 中国科学技术大学近代物理系，特聘副研究员。
2017-2018, 北京科技大学讲师。
2018 至今，南开大学物理科学学院，副教授。

报告链接：

Grand Unified Theories beyond SU(5)_哔哩哔哩_bilibili