Goldstone-Boson-Exchange模型下的重子谱  

作　　者：郎云霞 

机构地区：[1]西南大学物理科学与技术学院

出　　处：《科技创新与应用》2020年第2期25-26,共2页Technology Innovation and Application

摘　　要：1964年Gell-Mann认为夸克模型为物质构成的新理论,于是人们在夸克的维度上研究重子的质量谱。今天,大家都觉得强相互作用的基本理论是以夸克和胶子自由度及它的规范场论为基础的量子色动力学QCD。重子结构的探讨就变成为标准模型。所以具有QCD明显特点的唯象模型在体现核子——核子相互作用、重子谱、重夸克偶素能谱等强子特点方面都有了特别好的成功。在目前已有的众多唯象模型中,特别成功的一个应该是组分夸克模型,包括非相对论组分夸克模型还有相对论组分夸克模型,我们探究了戈德斯通玻色子交换所引起的夸克间超精细相互作用。In 1964,Gell-Mann thought that the quark model is a new theory of the composition of matter,so people studied the mass spectrum of baryons in the quark dimension.Today,it is believed that the basic theory of strong interaction is the quantum chromodynamics(QCD),which is based on the degrees of freedom of quarks and gluons and its gauge field theory.The discussion of baryon structure becomes a standard model.Therefore,the phenomenological model with the obvious characteristics of QCD has a good success in reflecting the characteristics of Hadron,such as nucleon-nucleon interaction,baryon spectrum,heavy quarkonium spectrum and so on.Among the many phenomenological models available at present,the most successful one should be the compo-nent quark model,including the non-relativistic component quark model and the relativistic component quark model.We explore the hyperfine interaction between quarks caused by Goldstone Boson Exchange.

关 键 词：夸克模型 戈德斯通玻色子交换 超精细相互作用 重子谱 

分 类 号：O572.34[理学—粒子物理与原子核物理]