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.

引用

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页码：4621 / 4636

页数：16

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