At the designed circular electron-positron collider(CEPC), similar to the hadron collider, the angular distribution coefficients of the decay lepton pair from t
We reexamine the simplified dark matter(DM) models with fermionic DM particle and spin-0 mediator.The DM-nucleon scattering cross sections in these models are l
Vacuum polarization is a part of the initial-state radiative correction for the cross-section of e^+e^- annihilation processes. In the energy region in the vici