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ExperimentNo Access

Probing EWPT in 2HDM with future lepton colliders

School of Science, Shenzhen Campus of Sun Yat-sen University, No. 66, Gongchang Road, Guangming District, Shenzhen, Guangdong 518107, P. R. China

E-mail Address: suwei26@mail.sysu.edu.cn

Speaker.

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Anthony G. Williams

Department of Physics, ARC Centre of Excellence for Dark Matter Particle Physics, University of Adelaide, Adelaide, South Australia 5005, Australia

E-mail Address: anthony.williams@adelaide.edu.au

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Department of Physics, Jinan University, Guangzhou 510632, P. R. China

Siyuan Laboratory, Jinan University, Guangzhou 510632, P. R. China

E-mail Address: mczhang@jnu.edu.cn

Corresponding author.

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https://doi.org/10.1142/S0217751X22460083Cited by:0 (Source: Crossref)

This article is part of the issue:

Special Issue: The Future of High Energy Physics - Some Aspects (VII)
Guest Editors: L. R. Flores Castillo, K. Prokofiev and Y. Tu

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 $m_{A ∕ H ∕ H^{\pm}}$ $m_{A ∕ H ∕ H^{\pm}}$ , 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 $m_{A} \approx m_{H^{\pm}} > m_{H}$ $m_{A} \approx m_{H^{\pm}} > m_{H}$ 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 $Z$ $Z$ -pole precision measurements at future Higgs and $Z$ $Z$ factories.

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Vol. 37, No. 30

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History

Received 28 February 2021

Revised 29 August 2022

Accepted 27 September 2022

Published: 3 December 2022

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