Work

W boson mass in NP models with an extra U(1) gauge group*

Year: 2024

Type: article

Abstract: The precise measurement of the W boson mass is closely related to the contributions of new physics (NP), which can significantly constrain the parameter space of NP models, particularly those with an additional local gauge group. The inclusion of a new Z' gauge boson and gauge couplings in these models can contribute to the oblique parameters S, T, and U and the W boson mass at tree level. Considering the effects of kinetic mixing, in this study, we calculate and analyze the oblique parameters S, T, and U and the W boson mass in such NP models. We find that the kinetic mixing effects can make significant contributions to the W boson mass, and these contributions can be eliminated by redefining the gauge boson fields by removing neutral currents with charged leptons if the leptonic Yukawa couplings are invariant under the extra local gauge group, even with nonzero kinetic mixing effects.

Source: Chinese Physics C

DOI: 10.1088/1674-1137/ad7012

Authors: Jin-Lei 金磊 Yang 杨, Zhao-Feng 兆丰 Ge 葛, Xiu-Yi 秀一 Yang 杨, Sheng-Kai 生恺 Cui 崔, Tai-Fu 太傅 Feng 冯

Institutions: Hebei University, Chinese Academy of Sciences, Institute of Theoretical Physics, University of Science and Technology Liaoning, Guangxi University

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,295

Funders: National Natural Science Foundation of China, Natural Science Foundation of Hebei Province