EOS of Hadron Matter with Inclusions of Pentaquark (?)^(+1)  

作　　者：Li Xiguo, Gao Yuan and Li Yongqing 

出　　处：《近代物理研究所和兰州重离子加速器实验室年报：英文版》2004年第1期17-17,共1页IMP & HIRFL Annual Report

基　　金：Supported by Chinese Academy of Sciences Knowledge Innovation Project (KJCX2-SW-No2)National Natural Science Foundation of China(10435080).

摘　　要：In 1997, Diakonov, Petrov, and Polyakov, in the framework of the chiral soliton model, predicted an exotic baryon (?)+ with mass M ≈1.53 GeV, S = +1, spin 1/2 and isospin 0. However, the subject has been thrust to the fore- front during the past two years by the experimental discovery of an exotic baryon. The self energy of the (?)+ pentaquark shows that the in-medium renormalization of the pion in the two meson cloud of the (?)+ leads to a sizable attraction, which is enough to produce a large number of bound and narrow (?)+ states in nuclei. We extend the density dependent relativistic hadron field theory(DDRH) to study the EOS of hadron matter with inclusions of pentaquark (?)+. In mean field approximation, the energy densityIn 1997, Diakonov, Petrov, and Polyakov, in the framework of the chiral soliton model, predicted an exotic baryon θ＋ with mass M ≈1.53 GeV, S = ＋1, spin 1/2 and isospin 0 . However, the subject has been thrust to the fore- front during the past two years by the experimental discovery Of an exotic baryon[2], The self energy of the θ＋ pentaqtuark shows that the in-medium renormalization of the pion in the two meson cloud of the θ＋ leads to a sizable attraction,

关 键 词：五夸克态 状态方程 强子物质 夹杂物 手征孤立子模型 实验发现 同位旋 Π介子 

分 类 号：O572.3[理学—粒子物理与原子核物理]