W玻色子是一种传递弱力的媒介粒子，其质量来自于电弱对称性破缺，对其精确测量可以检验标准模型的自洽性，提供揭示可能的新物理迹象的重要途径。介绍了美国费米国家实验室对W玻色子质量的最精确测量结果，即比标准模型的预期结果偏离高了7个标准偏差，这一结果直接挑战粒子物理学的标准模型。分析了该实验结果以及理论误差的可能来源，解读了其可能引发的新物理效应。
W boson is the elementary bosonic particle mediating the weak force and its mass is originated from electroweak symmetry breaking. Precision measurements of W boson mass provide a self-consistence check of the standard model theory and could hint at new particles or other mysteries of physics yet to be discovered. The Fermilab CDF group published the most precise result on W boson mass and found that this new measurement disagreed with the standard model's expectation by 7 sigma on the statistical significance. This finding would possibly challenge the current understanding of the standard model of particle physics.
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