Su, W.Williams, A.G.G.Zhang, M.2023-01-302023-01-302022International Journal of Modern Physics A: particles and fields; gravitation; cosmology; nuclear physics, 2022; 37(30):2246008-1-2246008-70217-751X1793-656Xhttps://hdl.handle.net/2440/137323The electroweak phase transition can be made first order by extending the Standard Model (SM) Higgs sector with extra scalars. Here, we focus on the strong first-order electroweak phase transition (SFOEWPT) in the Type-II two Higgs doublet models (2HDMs). Through a parameter space scan, we find that SFOEWPT suggests upper limits on the masses of the heavy Higgs mA∕H ∕ H±, which is less than 1TeV. High-temperature expansion and Higgs vacuum uplifting are used for analytical understanding of our results. We find that sizeable loop corrections require mA≈mH±>mH to meet the SFOEWPT condition in the Type-II 2HDM. We also study the possibility of probing SFOEWPT at the one-loop level from Higgs and Z-pole precision measurements at future Higgs and Z factories.en© World Scientific Publishing CompanyElectroweak phase transition; 2HDM; Higgs factoryJournal article10.1142/S0217751X224600832023-01-25630169Su, W. [0000-0001-5958-6366]Williams, A.G.G. [0000-0002-1472-1592]