包含轻子结构的夸克模型  

A Quark Model Including Lepton Structure

作　　者：刘耀阳[1] 江向东[1] 周剑歌 

机构地区：[1]中国科学技术大学近代物理系,中国科学院高能物理研究所

出　　处：《高能物理与核物理》1996年第10期900-912,共13页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金;中国科学院LWTZ-1298资助

摘　　要：对标准模型作手征性扩充后，模型中平行地存在手征性相反的夸克态．相应于构成强子的ｆ代普通夸克，新加的同样代数、手征性相反的夸克可能构成轻子．对扩充后的模型超对称化之后，使得渐近自由性质的破坏所要求的代的数目从大于３３／８减少到大于９／４，从而有可能解释手征相反的夸克构成的轻子为什么比普通夸克构成的强子大小要小得多等特点．The chiral extension of the standard model makes quarks having two chiralities parallelly.Some interesting questions, such as the possibilities of leptons being made of additional leptonic quarks and proton decay, are discussed.We also investigate the supersymmetrization of the extension of quark model.It is proved that such a theory maintains many important characteristics of the original one, but the generation number required for breaking asymptotic freedom is decreased from >33/8 to>9/4 which is compatible with the present experiments.

关 键 词：标准模型 手征性 超对称化 轻子结构 夸克模型 

分 类 号：O572.25[理学—粒子物理与原子核物理]