| Study of Σ~*-Δ Interactions |
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| 作者单位： | DAI Lian-rong,BAI Li-hui,ZHANG He,LIU Jia(Department of Physics,Liaoning Normal University,Dalian 116029,Liaoning,China);FU Yao(Department of Physics,Liaoning Normal University,Dalian 116029,Liaoning,China;School of Police Dog Technique,Public Security Ministry of China,Shenyang 110034,China);TONG De-xin(Department of Physics,Liaoning Normal University,Dalian 116029,Liaoning,China;Department of Police Technology,Liaoning Police Academy,Dalian 116036,Liaoning,China) |
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| 基金项目： | 国家自然科学基金，Scientific Research Foundation of Liaoning Education Department |
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| 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 5/2 and (Σ~*Δ)_(ST)=3 1/2 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.
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