Pion Cloud Effects on △-N Mass Splitting from Quark Models
Pion Cloud Effects on △-N Mass Splitting from Quark Models作者机构：Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918-4 Beijing 100039 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918-4 Beijing 100039 China
出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)
年 卷 期：2002年第38卷第8期
页 面：189-194页
核心收录：
基 金：国家自然科学基金 教育部资助项目 中国科学院资助项目 中国科学院知识创新工程项目
主 题：quark models, coupling constants, pion cloud, △-N mass splitting
摘 要：Pion cloud effects on △-N mass splitting are studied based on quark models. Pseudo-scalar pion-quarkcoupling is discussed in the relativistic and nonrelativistic frameworks. We separately calculate the pion cloud effects bythe one-pion exchange potential and by another method which is consistent with the baryon chiral perturbation *** able discrepancy in the mass splitting between the two methods is shown.
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