Custodial symmetry violation in scalar extensions of the standard model

doi:10.1088/1674-1137/ace5a6

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	Custodial symmetry violation in scalar extensions of the standard model
	Song, Huayang 1; Wan, Xia 1; Yu, Jiang-Hao
刊名	CHINESE PHYSICS C
	2023
卷号	47 期号:10 页码:103103
关键词	W-BOSON MASS CDF II HIGGS
ISSN号	1674-1137
DOI	10.1088/1674-1137/ace5a6
英文摘要	The new measurement of the Wboson mass from the CDF collaboration shows a significant tension with the standard model prediction, which evidences violation of custodial symmetry in the scalar sector. We study the scalar extensions of the standard model, which can be categorized into two classes, the scalar sector with custodial symmetry (Georgi-Machacek model and its generalizations) and the scalar sector without custodial symmetry, and explore how these extensions fit to electroweak precision data and the new CDFmw. The favored oblique parameters originate from either the large mass splitting in the multiplet via the loop contribution or the large vacuum expectation value, which breaks custodial symmetry at the tree level. In particular, we find that O(100) GeV new particles are allowed in the scalar extension scenarios.
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/311006/27957]
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.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 5.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 6.Int Ctr Theoret Phys Asia Pacific, Beijing Hangzhou, Peoples R China
推荐引用方式 GB/T 7714	Song, Huayang,Wan, Xia,Yu, Jiang-Hao. Custodial symmetry violation in scalar extensions of the standard model[J]. CHINESE PHYSICS C,2023,47(10):103103.
APA	Song, Huayang,Wan, Xia,&Yu, Jiang-Hao.(2023).Custodial symmetry violation in scalar extensions of the standard model.CHINESE PHYSICS C,47(10),103103.
MLA	Song, Huayang,et al."Custodial symmetry violation in scalar extensions of the standard model".CHINESE PHYSICS C 47.10(2023):103103.