Applicability of perturbative QCD to virtual Compton scattering

被引：0

作者：

Su, J ^{[1
]}

Ma, BQ ^{[1
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

来源：

HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION | 2004年 / 28卷 / 02期

关键词：

virtual Compton scattering; pQCD; distribution amplitude; work point;

D O I：

暂无

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：

We use pertubative QCD to calculate the cross sections of pion virtual Compton scattering. QCD running coupling constant and different pion distribution amplitudes are explored in detail. The "work point" is defined to determine when pQCD is applicable to exclusive processes. We show that pQCD begins to work at 10 GeV2. H we relax our constraint to a weak sense, the work point may be as low as 4 GeV2.

引用

页码：116 / 121

页数：6

共 23 条

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