Strong decays of N*(1535) in an extended chiral quark model

被引：19

作者：

An ChunSheng ^{[1
,2
,3
]}

Zou BingSong ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2009年 / 52卷 / 10期

基金：

中国国家自然科学基金;

关键词：

N*(1535); strong decays; five-quark components;

D O I：

10.1007/s11433-009-0199-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The strong decays of the N*(1535) resonance are investigated in an extended chiral quark model by including the low-lying qqqq (q) over bar components in addition to the qqq component. The results show that these five-quark components in N*(1535) contribute significantly to the N*(1535) -> N pi and N*(1535) -> N eta decays. The contributions to the N eta decay come from both the lowest energy and the next-to-lowest energy five-quarks components, while the contributions to the N pi decay come from only the latter one. Taking these contributions into account, the description for the strong decays of N*(1535) is improved, especially for the puzzling large ratio of the decays to N eta and N pi.

引用

页码：1452 / 1457

页数：6

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