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arXiv · 2204.04183

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

Guan-Wen Yuan·Lei Zu·Lei Feng·Yi-Fu Cai·Yi-Zhong Fan
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Abstract

The $W$-boson mass ($m_{W}=80.4335 \pm 0.0094 \mathrm{GeV}$) measured by the Collider Detector at Fermilab collaboration is greater than the standard model (SM) prediction at a confidence level of $7\sigma$, 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.

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Guan-Wen Yuan, Lei Zu, Lei Feng, Yi-Fu Cai, Yi-Zhong Fan. 2022-04-08. Is the $W$-boson mass enhanced by the axion-like particle, dark photon, or chameleon dark energy?. https://doi.org/10.1007/s11433-022-2011-8

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