Nucleon Form Factors and N-A Transitions in a Hypercentral Constituent Quark Model with Meson Cloud

被引：1
|
作者：
CHEN Dina-Yong~(1
机构：
来源：
CommunicationsinTheoreticalPhysics | 2007年 / 47卷 / 03期
基金：
中国国家自然科学基金;
关键词：
electromagnetic form factor; nucleon and △(1232); hypercentral constituent quark model; meson cloud;
D O I：
暂无
中图分类号：
O572.33 [介子];
学科分类号：
070202 ;
摘要：
We study the nucleon form factors and the nucleon-△(1232)transitions in a framework of hypercentralconstituent quark model.The pion meson cloud effect is taken into account explicitly.Our results show that the pioncloud contributes substantially to the nucleon form factors as well as to the helicity amplitudes of △(1232),and it givesan improved agreement compared to the experimental measurement.
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页码：539 / 546
页数：8
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