Is the W-boson mass enhanced by the axion-like particle,dark photon,or chameleon dark energy?  

作　　者：Guan-Wen Yuan Lei Zu Lei Feng Yi-Fu Cai Yi-Zhong Fan 

机构地区：[1]Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing,210023,China [2]School of Astronomy and Space Science,University of Science and Technology of China,Hefei,230026,China [3]Department of Astronomy,School of Physical Sciences,University of Science and Technology of China,Hefei,230026,China [4]CAS Key Laboratory for Researches in Galaxies and Cosmology,University of Science and Technology of China,Hefei,230026,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2022年第12期145-152,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Key R&D Program of China(Grant No.2021YFC2203100);the National Natural Science Foundation of China(Grant Nos.11921003,11961131007,and 11653002);the CAS Project for Young Scientists in Basic Research(Grant No.YSBR-006);the USTC Research Funds of the Double First-Class Initiative。

摘　　要：The W-boson mass(m W=(80.4335±0.0094)Ge V)measured by the Collider Detector at Fermilab Collaboration is greater than the standard model(SM)prediction at a confidence level of 7σ,strongly suggesting the presence of new particles or fields.In the literature,various new particles and/or fields have been introduced to explain the astrophysical and experimental data,and their presence,in principle,may also enhance the W-boson mass.In this study,we investigate axion-like particle(ALP),dark photon(DP),and chameleon dark energy(DE)models for a solution to the W-boson mass excess.We find that the ALP and DP interpretations have been significantly narrowed down by global electroweak fits.The possibility of attributing the W-boson mass anomaly to the chameleon DE is ruled out by other experiments.

关 键 词：W-boson mass axion-like particle dark photon chameleon dark energy 

分 类 号：P14[天文地球—天体物理]