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 ...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).展开更多
基金Supported in part py the National Natural Science Foundation of China under Grant Nos.10075071 and 19975010the Foundation of Education Ministry of China,and Chinese Academy of Sciences under contract No.KJ951-A1-410.
文摘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).