中国科学技术大学学报 ›› 2014, Vol. 44 ›› Issue (3): 214-216.DOI: 10.3969/j.issn.0253-2778.2014.03.008

• 论著 • 上一篇    

用e+e-→D*+D*-检验一个微扰QCD预言

郭晗,张子平   

  1. 中国科学技术大学近代物理系, 安徽合肥 230026
  • 收稿日期:2013-03-18 修回日期:2013-09-27 接受日期:2013-09-27 出版日期:2013-09-27 发布日期:2013-09-27

Test a perturbative QCD prediction with e+e-→D*+D*-

GUO Han, ZHANG Ziping   

  1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2013-03-18 Revised:2013-09-27 Accepted:2013-09-27 Online:2013-09-27 Published:2013-09-27
  • Contact: ZHANG Ziping
  • About author:GUO Han, male, born in 1982, PhD candidate. Research field: Experimental particle physics. E-mail: guohan@mail.ustc.edu.cn
  • Supported by:
    Supported by National Natural Science Foundation of China (10935008).

摘要: 计算了e+e-→D*+D*-过程的微分截面, 以D*介子的电磁形状因子表示. 代入微扰QCD预言的电磁形状因子比值, 得到的角分布与中心系能量为1058 GeV的实验测量不一致.

关键词: D*介子, 电磁形状因子, 微扰QCD

Abstract: The differential cross section for e+e-→D*+D*- process was calculated in terms of the electromagnetic form factors of D* meson. After putting in the ratios of form factors predicted by perturbative QCD (quantum chromodynamics), the angular distribution obtained was found to be inconsistent with experimental measurement at s=1058 GeV.

Key words: D* meson, electromagnetic form factor, perturbative QCD

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