Speaker
XIANG Qianfei
Description
In this work, we investigate the loop effects of some dark matter (DM) models at the CEPC.
We extend the standard model by adding a singlet and two $SU_L(2)$ doublets, and a $SU_L(2)$ triplet and two doublets. The lightest neutral fermion in the dark sector can be the DM candidate after electroweak symmetry-breaking. The current experimental constraints from the LHC mono-jet search, DM relic density, and DM direct detection have been considered. We identify parameter regions which would be probed by the measurements of $e^+e^-\to Zh$ production cross section and Higgs decay partial widths at the CEPC.
