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

作　　者：Jin-Lei Yang Zhao-Feng Ge Xiu-Yi Yang Sheng-Kai Cui Tai-Fu Feng 杨金磊;葛兆丰;杨秀一;崔生恺;冯太傅(Department of Physics,Hebei University,Baoding 071002,China;Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province,Baoding 071002,China;CAS Key Laboratory of Theoretical Physics,School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;School of Science,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]Department of Physics,Hebei University,Baoding 071002,China [2]Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province,Baoding 071002,China [3]CAS Key Laboratory of Theoretical Physics,School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [4]School of Science,University of Science and Technology Liaoning,Anshan 114051,China

出　　处：《Chinese Physics C》2024年第11期15-21,共7页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China (12075074,12235008);the Hebei Natural Science Foundation for Distinguished Young Scholars (A2022201017,A2023201041);the Natural Science Foundation of Guangxi Autonomous Region (2022GXNSFDA035068);the Youth Top-Notch Talent Support Program of the Hebei Province,China。

摘　　要：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 U(1)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 U(1)local gauge group,even with nonzero kinetic mixing effects.

关 键 词：extra U(1) oblique parameters kinetic mixing 

分 类 号：O413[理学—理论物理]