DIRECT INSTANTONS IN QCD NUCLEON SUM-RULES

被引：49

作者：

FORKEL, H

BANERJEE, MK

机构：

[1] Department of Physics, University of Maryland, College Park

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.71.484

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the role of direct (i.e., small-scale) instantons in QCD correlation functions for the nucleon. They generate sizable nonperturbative corrections to the conventional operator product expansion, which improve the quality of both QCD nucleon sum rules and cure the long-standing stability problem, in particular, of the chirally odd sum rule.

引用

页码：484 / 487

页数：4

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