News on the Physics Potential of the Reaction E + E − → Zγ

The next large project in particle physics is widely expected to be a high-energy electron-positron collider.Such a facil-ity could be realised as a circular collider,like the Circular Electron Positron Collider(CEPC)and the Future e+e-Cir-cular Collider(FCC-ee)[1],or as a linear collider,like the International Linear Collider(ILC)and the Compact Linear Collider(CLIC)[2].Besides the direct observation of new phenomena making use of the clean experimental environ-ment in electron-positron collisions,the precision study of Standard Model(SM)processes provides an important tool to search for new physics at these colliders.