摘要
We study the Σ*-Δ interaction in the chiral SU(3) quark model and in the extended chiral SU(3) quark model. In these two models,the short-range interaction mechanism are totally different,one is from the one-gluon exchange and another is from the vector meson exchange. The possible reasons of forming strangeness -1 bound states are given. Comparisons between the cases with and without quark exchange effect are made. The results show the quark exchange effect does give attractions to (Σ*Δ)ST=0 52 and (Σ*Δ)ST=3 12 systems,which means the special symmetry is important. Also,we make some analysis on chiral field effect,our results show that the σ exchange dominantly provides the attractive interaction for these two states.
We study the Σ*-Δ interaction in the chiral SU(3) quark model and in the extended chiral SU(3) quark model. In these two models,the short-range interaction mechanism are totally different,one is from the one-gluon exchange and another is from the vector meson exchange. The possible reasons of forming strangeness -1 bound states are given. Comparisons between the cases with and without quark exchange effect are made. The results show the quark exchange effect does give attractions to (Σ*Δ)ST=0 52 and (Σ*Δ)ST=3 12 systems,which means the special symmetry is important. Also,we make some analysis on chiral field effect,our results show that the σ exchange dominantly provides the attractive interaction for these two states.
作者
DAI Lian-rong1,BAI Li-hui1,ZHANG He1, LIU Jia1,FU Yao1,2,TONG De-xin1,3 (1 Department of Physics,Liaoning Normal University,Dalian 116029,Liaoning,China
2 School of Police Dog Technique,Public Security Ministry of China,Shenyang 110034, China
3 Department of Police Technology,Liaoning Police Academy,Dalian 116036, Liaoning,China)
出处
《原子核物理评论》
CAS
CSCD
北大核心
2009年第S1期148-152,共5页
Nuclear Physics Review
基金
National Natural Science Foundation of China(10675058)
Scientific Research Foundation of Liaoning EducationDepart ment(20060490)
