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奇异核物质中K介子有效质量
  • 期刊名称：高能物理与核物理 31 (2007) 922
  • 时间：0
  • 分类：O471.1[理学—半导体物理;理学—物理]
  • 作者机构：[1]中国科学院近代物理研究所,兰州730000, [2]兰州重离子加速器国家实验室原子核理论中心,兰州730000, [3]中国科学院研究生院,北京100049, [4]杭州电子科技大学信息工程学院,杭州310037
  • 相关基金：中国科学院知识创新工程重点方向性项目（KJCX3-SYW-N2,KJCX2-SW-N16）和国家科学自然基金（10435080,10575123）资助
  • 相关项目：基于兰州冷却储存环上强子物理的理论研究
关键词： K介子有效质量, 奇异核物质, 标量同位旋矢量介子δ, effective masses of kaons meson, hyperon-rich nuclear matter, scalar isovector meson δ
中文摘要：

在Schaffner相对论平均场模型的框架基础上,考虑同位旋矢量介子δ,扩展了强子动力学模型和单玻色子交换K介子-模型,重新讨论了介子与重子和介子与K介子相互作用的耦合常数,研究了奇异核物质中K介子的有效质量,发现在奇异核物质中K介子的有效质量随密度的变化比在纯核子物质中的变化小.同位旋矢量介子δ对在奇异核物质中K介子有效质量随密度变化有明显的影响,但对不同的参数组,其影响的大小不同.

英文摘要：

By including the scalar isovector meson 5, we extend the relativistic mean field model and the one-boson exchange model of changing K-meson in the framework of Schaffner＇s relativistic mean field model. We re-consider the coupling constants for the interactions between the meson and the baryon and the interactions of the K meson with different mesons as well in various parameter sets. Using our model, we discuss the effective masses of K mesons in the hyperon-rich nuclear matter. We find that the density modification of the K meson mass in the strange nuclear matter is smaller than that in the pure nuclear matter. The influence of the scalar isovector meson δ on the effective mass of kaon is rather evident. But the extent of the influence is different in different parameter sets.

同期刊论文项目
五夸克奇特重子态
期刊论文 42
基于兰州冷却储存环上强子物理的理论研究
期刊论文 214 会议论文 9 著作 1
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