1Institute of High Energy Physics, Chinese Academy of Science, Beijing 100039
2Chinese Center of Advanced Science and Technology (World Laboratory), Beijing 100080
3Institute of Theoretical Physics, Chinese Acedemy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
ΞΩ and Ξ*Ω Dibaryons in SU(3) Chiral Quark Model
LI Qiang-Bing1;SHEN Peng-Nian1,2,3,4
1Institute of High Energy Physics, Chinese Academy of Science, Beijing 100039
2Chinese Center of Advanced Science and Technology (World Laboratory), Beijing 100080
3Institute of Theoretical Physics, Chinese Acedemy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
Abstract： The binding energy of the six quark system with strangeness s =-5 is investigated by the SU(3) chiral constituent quark model. The single Ξ*Ω channel calculation with spin S = 0 and the coupled ΞΩ - Ξ*Ω channel calculation with spin S = 1 are considered. It is shown that in the spin S = 0 case, the binding energy of Ξ*Ω is ranged from 80.0 to 92.4 MeV, while in the S = 1 case, the additional Ξ*Ω channel increases the binding energy of ΞΩ to a range of 26.2 - 32.9MeV.
2000, Vol. 17 
