R值测量及相关物理

R Measurement and Related Physics

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摘要工作在北京正负电子对撞机(BEPC)上的北京谱仪(BES)对2—5GeV能区的R值进行了精确测量,这一成果对寻找新物理和新粒子Higgs在国际高能物理界带来巨大冲击,本文对R值测量及相关物理,如μ子反常磁矩α_μ,QED耦合常数α(M_z^2),μ子偶素的基态超精细劈裂(HFS)以及确定强耦合常数α_s和重夸克质量等的最新进展和未来展望在实验和理论两方面均作了较详尽的介绍。 New measurements of R value in the energy range of 2-5GeV were completed by Beijing Spectrometer Collaboration (BES) at Beijing Electron Positron Collider (BEPC) and caused a strong impact on the search for new physics and Higgs particle in the international high energy physics community. The newest progress and future prospect for the experimental measurement of R value and some relative physics, such as the anomalous magnetic moment of muon αμ , the running QED coupling constant a ( Mz2 ) , the muonium hyperfine splitting ( HFS) VHFS , and the determination of strong coupling constant αs and heavy quark masses, in both experimental and theoretical aspects, were introduced.

作者薛生田

机构地区中国科学院高能物理研究所

出处《高能物理与核物理》 CSCD 北大核心 2003年第11期1044-1052,共9页 High Energy Physics and Nuclear Physics

基金国家自然科学基金(19991480)~~

关键词 R值测量粒子物理学高能物理 Μ子反常磁矩 QED耦合常数偶素基态超精细劈裂强耦合常数重夸克质量 R value, higgs, anomalous magnetic moment of muon, running QED coupling constant, muonium hyper- fine splitting, strong coupling constant αs, heavy quark masses

分类号 O572.3 [理学—粒子物理与原子核物理]

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参考文献20

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高能物理与核物理

2003年第11期

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R值测量及相关物理

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