U(4)过渡区理论中的介子质量谱  

Mass Spectra of Mesons in U(4) Transitional Theory

作　　者：张宇[1] 潘峰[1] 

机构地区：[1]辽宁师范大学物理系,辽宁大连市116029

出　　处：《原子核物理评论》2004年第4期306-308,共3页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(10175031);辽宁省教育厅科研基金(202122024);辽宁省拔尖人才计划资助项目~~

摘　　要：利用U(4)振动子模型的过渡区理论来描述q q位形介子的结构.对实验数据比较完整的57个介子的质量进行了拟合,并与O(4)极限的计算结果以及唯象QCD理论的计算结果进行了比较.结果表明,利用过渡区理论对介子质量谱的描述比O(4)极限更为精确.A mass formula of q mesons is formulated based on the transitional theory in the U(4) vibron model, in which accurate fitting to 57 experimentally well-established masses of mesons is carried out. The results show that the transitional theory seems to be much better than the O(4) limit consideration in the description of mass spectra of q mesons. A comparison of the results from the transitional theory to those from the O(4) limit calculation and QCD potential model is also shown.

关 键 词：介子 极限 质量谱 QCD 实验数据 子模型 拟合 振动子 过渡区 

分 类 号：O572.33[理学—粒子物理与原子核物理] O571.6[理学—物理]