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科技导报 |专稿 2023 , 41 (15) : 6 -11
W玻色子质量精确测量:新物理隐藏其中?
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于江浩
作者信息
    中国科学院理论物理研究所, 北京 100190
作者简介:
于江浩,研究员,研究方向为粒子物理理论及粒子宇宙学,电子信箱:jhyu@itp.ac.cn
W boson mass: New physics hidden in precision measurement?
  • YU Jianghao
  • Affiliations
      CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
    出版时间: 2023-08-13 doi: 10.3981/j.issn.1000-7857.2023.15.001
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    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玻色子  /  质量精确测量  /  粒子物理标准模型  /  新物理
    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.
    W boson  /  precision mass measurement  /  standard model of particle physics  /  new physics
    于江浩. W玻色子质量精确测量:新物理隐藏其中?. 科技导报, 2023 , 41 (15) : 6 -11 . DOI: 10.3981/j.issn.1000-7857.2023.15.001
    YU Jianghao. W boson mass: New physics hidden in precision measurement?[J]. Science & Technology Review, 2023 , 41 (15) : 6 -11 . DOI: 10.3981/j.issn.1000-7857.2023.15.001

      国家自然科学基金项目(12022514)

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    doi: 10.3981/j.issn.1000-7857.2023.15.001
    • 接收时间:2022-05-03
    • 首发时间:2023-08-30
    • 出版时间:2023-08-13
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    • 收稿日期:2022-05-03
    • 修回日期:2022-06-28
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    2种不同金属材料的力学参数

    Family
    属数
    Number of
    genus
    种数
    Number of
    species
    占总种数比例
    Percentage of
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    Genus
    种数
    Number of
    species
    占总种数比例
    Percentage of total
    species (%)
    鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
    小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
    多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
    红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
    小菇属 Mycena 11 5.26
    光柄菇属 Pluteus 5 2.39
    红菇属 Russula 17 8.13
    栓菌属 Trametes 5 2.39
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