QCD sum rules: Isospin symmetry breakings in pion-nucleon couplings

被引：9

作者：

Hwang, WYP ^{[1
]}

Yang, ZS

Zhong, YS

Zhou, ZN

Zhu, SL

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan

[2] MIT, Ctr Theoret Phys, Nucl Sci Lab, Cambridge, MA 02139 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

[4] Beijing Univ, Dept Phys, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW C | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.57.61

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 the method of QCD sum rules in the presence of an external point field to investigate isospin symmetry breakings in pion-nucleon couplings. Possible manifestations of such isospin symmetry breakings are examined in the context of low-energy nucleon-nucleon scattering. We discuss numerical results in relation to both the existing data and other theoretical predictions.

引用

页码：61 / 68

页数：8

共 25 条

[1] PROTON AND NEUTRON MAGNETIC-MOMENTS FROM QCD SUM-RULES [J].