THE PERTURBATIVE PION FORM-FACTOR WITH SUDAKOV SUPPRESSION

被引：405

作者：

LI, HN

STERMAN, G

机构：

[1] Institute for Theoretical Physics, State University of New York, Stony Brook

来源：

NUCLEAR PHYSICS B | 1992年 / 381卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(92)90643-P

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We give a modified perturbative expression for the pion electromagnetic form factor in perturbative QCD, which includes Sudakov suppression of the elastic scattering of quarks that are isolated in space. Beyond momentum transfers of 20-LAMBDA(QCD) the perturbative calculation becomes relatively insensitive to soft gluon exchange. Our analysis involves no phenomenological parameters such as a gluon mass, and may be applied to the proton form factor.

引用

页码：129 / 140

页数：12

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