关于2^3S1介子九重态中同位旋二重态的质量  

On the Mass of the Isodoublet of the 23S1 Meson Nonet

作　　者：马冰[1] 王小珍[2] 

机构地区：[1]郑州大学物理工程学院,河南郑州450052 [2]郑州师范高等专科学校物理系,河南郑州550044

出　　处：《郑州大学学报（工学版）》2005年第1期86-87,共2页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(10205012);河南省杰出青年科学基金资助项目(0412000300);河南省自然科学基金资助项目(0311010800);河南省教育厅自然科学基金资助项目(2003140025)

摘　　要：借助对于接近理想混合的介子九重态,味道有关的夸克偶素间的湮灭效应可以忽略这样一个假定,利用在介子、介子混合框架下导出的质量关系,预言23S1介子九重态中同位旋二重态的质量大约为1584±16.7MeV,该结果与相对论性的夸克模型给出的预言符合很好.理论预言与K (1410)的质量之间的比较,显示把K (1410)安排为23S1介子九重态的成员是不合适的.该理论预言将会对实验上寻找23S1介子九重态中的同位旋二重态提供一些帮助.Based on the mass relation obtained in the framework of meson-meson mixing, with the help of the assumption that for the almost ideally mixing meson nonets, the corrections deduced by the flavor-dependent quarkonia tranistion can be ignored, and the mass of the isodoublet of the 2~3S_1 meson nonet is predicted to be 1584 ( 16.7 MeV. The agreement between our prediction and the result suggested by the quark model is good. Comparison of the theoretical prediction with the mass of the K~*(1410) clearly shows that it would be unreasonable to assign the K~*(1410) as the member of the 2~3S_1 meson nonet. The prediction will be useful to search the isodoublet of the 2~3S_1 meson nonet experimentally.

关 键 词：介子 同位旋 夸克模型 湮灭 相对论 质量关系 理想 理论 效应 成员 

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