BARYON MASS SPLITTINGS IN THE 1/N-C EXPANSION

被引：137

作者：

JENKINS, E

机构：

[1] Department of Physics, University of California at San Diego, San Diego

来源：

PHYSICAL REVIEW D | 1995年 / 52卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.52.282

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The I=0,1,2,3 mass splittings of the spin-1/2 octet and spin-3/2 decuplet baryons are analyzed in the 1/Nc expansion combined with perturbative flavor breaking. We show there is considerable experimental evidence that the baryon masses satisfy the hierarchy predicted by this expansion. Since flavor symmetry-breaking suppression factors alone are not sufficient to describe the observed hierarchy, we conclude that there is firm evidence for the 1/Nc expansion in the baryon masses. Our analysis differs from nonrelativistic SU(6). © 1995 The American Physical Society.

引用

页码：282 / 294

页数：13

共 38 条

[1] LOW-ENERGY SUM-RULES AND LARGE-N-C CONSISTENCY CONDITIONS [J].