Properties of （N, θ＋） System

• 作者: Li Xiguo Gao Yuan Li Yongqing Liu Ziyu
• 来源期刊: 近代物理研究所和兰州重离子加速器实验室年报：英文版
• 学科: 地球科学
• 关键词: 性质 系统 能量计算 MEV 细胞核 夸克
• 年，卷（期）: 2004,（1）
• 页码范围: 18
• 页数: 1页
• 分类号: N94

摘要

<正>Since the reported discovery three years ago of an exotic 5-quark resonance, named ()+(uudd()), with a mass of about 1 540 MeV and a narrow width of less than 20 MeV, there has been a rapid growth of interest in the subject. It also stimulated the search for other pentaquarks. The calculation of self energy of the pentaquark ()+ shows that it could be bound in nuclei. We investigate properties of hadron matter with inclusions of pentaquark ()+, in the framework of extended density dependent relativistic hadron field theory(DDRH). In mean field approximation, the energy density is