Probing EWPT in 2HDM with future lepton colliders
Date
2022
Authors
Su, W.
Williams, A.G.G.
Zhang, M.
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Journal article
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International Journal of Modern Physics A: particles and fields; gravitation; cosmology; nuclear physics, 2022; 37(30):2246008-1-2246008-7
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Wei Su, Anthony G. Williams, Mengchao Zhang
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Abstract
The 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.
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© World Scientific Publishing Company