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With the milestone discovery of the Higgs boson at the LHC, precision measurements of the electroweak physics at high energies hold the key to understand the Standard Model (SM) and to uncover new physics beyond the SM. After a brief overview of the properties of the longitudinal gauge bosons and the Higgs boson, we revisit the Goldstone boson equivalence theorem and define the “electroweak symmetry restoration” (EWSR) quantitatively. We present some examples to examine the EWSR at the LHC and beyond, in particular via the processes with "radiation amplitude zeros” by separating out the gauge sector and the scalar sector. We discuss what we may learn from testing the EWSR at high energies.
Bio： Tao Han is Distinguished Professor of High Energy Physics at the University of Pittsburgh and the founding Director of the Pittsburgh Particle Physics, Astrophysics and Cosmology Center. He received his PhD from the University of Wisconsin–Madison in 1990. He was previously a faculty member at the University of California, Davis, and the University of Wisconsin–Madison, where he served as Professor and Co-Director of the Phenomenology Institute before joining the University of Pittsburgh in 2011.
His research focuses on collider phenomenology and the exploration of physics beyond the Standard Model. He has made important contributions to Higgs physics, new physics searches at the Large Hadron Collider, and the study of future high-energy colliders, including the International Linear Collider, Future Circular Collider, and muon collider. He is a Fellow of the American Physical Society and the American Association for the Advancement of Science.
Tencent Meeting: 171-655-621
Prof. Jia Liu