摘要
The strange hadronic matter with nucleon,Λ-hyperon andΞ-hyperon is studied by using a chiral symmetry model in a mean-field approximation.The saturation properties and stabilities of the strange hadronic matter are discussed.The result indicates a quite large strangeness fraction(fs)region where the strange hadronic matter is stable against particle emission.In the large fs region,theΞcomponent dominates,resulting in a deep minimum in the curve of the binding energy per baryon EB versus the strangeness fraction fs with(EB,fs)~_(-26.0MeV,1.23).
作者
章利良
宋宏秋
王平
苏汝铿
ZHANG Li-Liang;SONG Hong-Qiu;WANG Ping;SU Ru-Keng(Shanghai Institute of Nuclear Research,Chinese Academy of Sciences,Shanghai 201800;Department of Physics,Fudan University,Shanghai 200433;Research Center of Nuclear Theory of National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing,100039)
基金
Supported in part py the National Natural Science Foundation of China under Grant Nos.10075071 and 19975010
the Foundation of Education Ministry of China,and Chinese Academy of Sciences under contract No.KJ951-A1-410.
