Prof. Dr. Tao Han

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.