期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 10, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP10(2022)048
关键词
Multi-Higgs Models; Electroweak Precision Physics
资金
- National Natural Science Foundation of China (NNSFC) [12105118, 11947118]
- International Postdoctoral Exchange Fellowship Program
- KIAS Individual Grant at Korea Institute for Advanced Study [PG084201]
- Junior Foundation of Sun Yat-sen University
- National Research Foundation of Korea [PG084201] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This work revisits the existence of a strong first order electroweak phase transition (SFOEWPT) and recent m(W) precision measurement in the Type-I and Type-II 2HDMs. The study finds that both Type-I and Type-II 2HDM can explain these precision measurements under current constraints, and heavy Higgs mass splitting in 2HDM plays a crucial role. The allowed parameters for Type-I and Type-II 2HDM are Delta m(A/C) is an element of (-400, 400) GeV, tan beta is an element of (1, 50), and Delta m(A/C) is an element of (-200, 300) GeV, tan beta is an element of (1, 10) respectively.
In this work we revisit the existence of a strong first order electroweak phase transition (SFOEWPT) and recent m(W) precision measurement in the Type-I and Type-II 2HDMs. The O(100) GeV new scalars in 2HDMs are favored by SFOEWPT, which is necessary for electroweak baryogenesis, and observed m(W) shift as well. We find that under current constraints, both Type-I and Type-II 2HDM can explain the SFOEWPT, Z-pole, Higgs precision measurements and m(W) precision measurement of CDF-II at same time, and all these precision measurements are sensitive to heavy Higgs mass splitting in 2HDM. The allowed regions are Delta m(A/C) is an element of (-400, 400) GeV, tan beta is an element of (1, 50), and Delta m(A/C) is an element of (-200, 300) GeV, tan beta is an element of (1, 10) for Type-I and Type-II 2HDM respectively. Furthermore future lepton collider measurements on Higgs and Z boson properties can explore this scenario in more detail or even rule out it.
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