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引用次数: 0
摘要
作为弱核力的媒介,W 玻色子影响着基本粒子及其相互作用的许多特性。几十年来,尽可能精确地了解 W 玻色子,包括知道它的质量,一直是粒子物理学的当务之急。在过去的几年里,CDF 协作组织连续通过多个实验进行了精度越来越高的测量,并记录了测量质量与预测质量之间的显著矛盾。此外,不同测量结果之间还存在较小的差异。由于 W 玻色子的质量提供了一个了解新物理学的窗口,对不同测量技术进行比较可以为进一步研究提供信息。这篇 "视角 "文章概述了 W 玻色子质量在粒子物理标准模型及其扩展中的作用,对比了其测量技术,并讨论了前景和未来方向。
The precision measurement of the W boson mass and its impact on physics
As a mediator of the weak nuclear force, the W boson influences many properties of fundamental particles and their interactions. Understanding the W boson as accurately as possible, including knowing its mass, has been a priority in particle physics for decades. In the past few years, in a succession of increasing-precision measurements by multiple experiments, a significant tension between the measured and predicted mass has been documented by the CDF Collaboration. Furthermore, smaller differences between different measurements exist. Because the W boson mass provides a window on new physics, a comparison between different measurement techniques can inform the path to further investigations. This Perspective article overviews the role of the W boson mass in the Standard Model of Particle Physics and its extensions, compares and contrasts its measurement techniques and discusses prospects and future directions. Understanding the W boson as accurately as possible, including knowing its mass, has been a priority in particle physics for decades. This Perspective article gives an overview of the role of the W boson mass in the Standard Model and its extensions and compares techniques for measuring it.
期刊介绍:
Nature Reviews Physics is an online-only reviews journal, part of the Nature Reviews portfolio of journals. It publishes high-quality technical reference, review, and commentary articles in all areas of fundamental and applied physics. The journal offers a range of content types, including Reviews, Perspectives, Roadmaps, Technical Reviews, Expert Recommendations, Comments, Editorials, Research Highlights, Features, and News & Views, which cover significant advances in the field and topical issues. Nature Reviews Physics is published monthly from January 2019 and does not have external, academic editors. Instead, all editorial decisions are made by a dedicated team of full-time professional editors.