W-boson mass anomaly from a general SU(2) L scalar multiplet

doi:10.1088/1674-1137/acc8bf

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	W-boson mass anomaly from a general SU(2) L scalar multiplet
	Wu, Jiajun 2; Huang, Da 4; Geng, Chao-Qiang
刊名	CHINESE PHYSICS C
	2023
卷号	47 期号:6 页码:63103
关键词	VECTOR-LIKE LEPTONS OBLIQUE PARAMETERS NEUTRINO MASSES DARK-MATTER HIGGS MODELS MIXINGS SU(5)
ISSN号	1674-1137
DOI	10.1088/1674-1137/acc8bf
英文摘要	We explain the W-boson mass anomaly by introducing an W-boson mass arises at the one-loop level, which can be expressed in terms of the electroweak (EW) oblique parameters T and S at leading order. We first rederive the general formulae of T and S induced by a scalar multiplet of EW charges, confirming the results in literature. We then study several specific examples of great phenomenological interest by applying these general expressions. As a result, it is found that the model with a scalar multiplet in an T and S. However, the cases with scalars in a complex representation under T and S. We further consider the strong constraints from the perturbativity and EW global fit of the precision data and vary the isospin representation and hypercharge of the additional scalar multiplet to assess the extent of the model to solve the W-boson mass anomaly. It turns out that these constraints play important roles in setting limits on the model parameter space. We also briefly describe the collider signatures of the extra scalar multiplet, especially when it contains long-lived, heavy, highly charged states.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/28109]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 2.Univ Chinese Acad Sci UCAS, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Wu, Jiajun,Huang, Da,Geng, Chao-Qiang. W-boson mass anomaly from a general SU(2) L scalar multiplet[J]. CHINESE PHYSICS C,2023,47(6):63103.
APA	Wu, Jiajun,Huang, Da,&Geng, Chao-Qiang.(2023).W-boson mass anomaly from a general SU(2) L scalar multiplet.CHINESE PHYSICS C,47(6),63103.
MLA	Wu, Jiajun,et al."W-boson mass anomaly from a general SU(2) L scalar multiplet".CHINESE PHYSICS C 47.6(2023):63103.