Density Dependent Coupling Constant of Pentaquark θ＋ in Nuclear Matter

• 作者: Li Xiguo Guo Yanrui Gao Yuan Jin Genming
• 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: 物理学
• 关键词: 五夸克态 耦合常数 密度制约 核物质 重离子碰撞 弱相互作用 早期阶段 碰撞过程
• 年，卷（期）: 2004,（1）
• 页码范围: 19
• 页数: 1页
• 分类号: O572.243

摘要

<正>Since the extremely narrow positive strangeness pentaquark state ()+(μμdd()) of mass 1.54 GeV and JP = 1/2+ is predicted and with several experimental searches being successfully undertaken, pentaquark becomes the hot topic of investigation. Recent studies of the ()+ in the context of heavy-ion collision suggest that the ()+ yield may bring about information on the early stage of heavy-ion collision due to its weak interaction with other hadrons produced in the course of the collision.