Speaker
Description
We combine the latest experimental data to investigate the potential of future precision measurements at the CEPC to probe new physics beyond the Standard Model, focusing on the Type-II two Higgs doublet model (Type-II 2HDM). The contributions from the heavy Higgs bosons at both the tree level and the one-loop level are included over the full parameter space. We perform a multiple variable global fit and study the extent to which the parameters of non-alignment limit and non-degenerate masses can be probed by the precision measurements. We find that future Higgs precision measurements can significantly constrain the allowed parameter space of the Type-II 2HDM, especially for small and large values of $\tan\beta$. The precision measurements at the Z-pole and at the Higgs factory are highly complementary in constraining the mass splittings among the heavy Higgs bosons and can provide indirect constraints on their masses. The typical results are $|\cos(\beta-\alpha)| < 0.0038, |\Delta m_\Phi | < 100$ GeV.
