The anomalous shift of the weak boson mass and the quintessence electroweak axion  

作　　者：Weikang Lin Tsutomu T Yanagida Norimi Yokozaki 

机构地区：[1]Tsung-Dao Lee Institute(TDLI)&School of Physics and Astronomy,Shanghai Jiao Tong University,Shengrong Road 520,201210 Shanghai,China [2]Kavli IPMU(WPI),The University of Tokyo,Kashiwa,Chiba 277-8583,Japan [3]Zhejiang Institute of Modern Physics and Department of Physics,Zhejiang University,Hangzhou,Zhejiang 310027,China

出　　处：《Communications in Theoretical Physics》2023年第3期70-74,共5页理论物理通讯（英文版）

基　　金：supported in part by the China Grant for Talent Scientific Start-Up Project;by the Natural Science Foundation of China(NSFC)under Grant No.12175134;by World Premier International Research Center Initiative(WPI Initiative),MEXT,Japan;supported by a start-up grant from Zhejiang University。

摘　　要：One of the simplest ways to account for the observed W-boson mass shift is to introduce the SU(2)L triplet Higgs boson with zero hypercharge,whose vacuum expectation value is about 3 GeV.If the triplet is heavy enough at O(1) TeV,it essentially contributes only to T parameter without any conflict with the observation.The presence of a complex triplet Higgs boson raises the SU(2)_(L) gauge coupling constant toα_(2)(M_(PL))≃1/44 at the Planck scale.Thanks to this larger gauge coupling constant,we show that the electroweak axion vacuum energy explains the observed cosmological constant provided that the axion field is located near the hill top of the potential at present.

关 键 词：electroweak axion dark energy dark matter W-boson mass anomaly 

分 类 号：O572.2[理学—粒子物理与原子核物理]