ELECTROMAGNETIC FORM-FACTOR OF THE π MESON WITH LIGHT-CONE QCD SUM RULES

被引：0
|
作者：
Wang, Zhi-Gang [1 ]
Wang, Zhi-Bin [2 ]
机构：
[1] N China Elect Power Univ, Dept Phys, Baoding 071003, Peoples R China
[2] Yanshan Univ, Coll Elect Engn, Qinhuangdao 066004, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2008年 / 23卷 / 27-28期
关键词：
Electromagnetic form-factor; light-cone QCD sum rules;
D O I：
10.1142/S0217751X08041499
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In this paper, we calculate the electromagnetic form-factor of the pi meson with the light-cone QCD sum rules. The numerical value F-pi(p)(0) = 0.999 +/- 0.001 is in excellent agreement with the experimental data (extrapolated to the limit of zero momentum transfer or the normalization condition F-pi(0) = 1). For large momentum transfers, the values from the two sum rules are all comparable with the experimental data and theoretical estimations.
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页码：4621 / 4636
页数：16
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