四夸克系统中的湮灭相互作用研究  

A Study of the Annihilation Interaction in Four-quark System

作　　者：谭志云[1] 杨友昌[1] 潘正坤[1] 万猛[1] 田维钊[1] 

机构地区：[1]遵义师范学院物理与电子科学学院,贵州遵义563006

出　　处：《遵义师范学院学报》2016年第6期114-117,共4页Journal of Zunyi Normal University

基　　金：国家自然科学基金资助项目(11265017;11675080);贵州省优秀青年科技人才培养对象专项资金(黔科合人字[2013]28号;黔科合J字LKZS[2014]31号;黔科合J字LKZS[2012]05号)

摘　　要：考虑四夸克系统内部正反同味夸克对湮灭为零质量的虚胶子和带有质量的有效胶子,推导出了湮灭相互作用势;在不修改夸克模型参数的情况下,采用精确四体算法——多高斯展开算法,计算了S-波的能谱。作者不仅合理地解释了新强子态X(3872),而且还发现存在J^(PC)2^(++)、D^0*D^0*和J^(PC)=0^(++)、D^0D^0两个弱束缚态,并为北京BES、欧州LHCb等国际实验合作组探测这些新粒子提出了建议。We deduced the annihilation interaction by taking into account massive effective one-gluon exchange or massless one-gluon exchange between quark-antiquark with same flavor. Employing Gaussian expansion method, the spectra of s-wave system were cal- culated within a constituent quark model with the same parameters used in other works. The newly hadron state X（3872） is perfectly ex- plained in this work. We also find two weak bound statesJ^PC=2^＋＋、D^0＊^-D0^＊,^JPC=0^＋＋、D^0^-D0 and proposed a suggestion for exploring these states by BES collaboration and LHCb collaboration and etc.

关 键 词：XYZ新强子态 BCN夸克模型 湮灭相互作用 多高斯展开算法 

分 类 号：O572.33[理学—粒子物理与原子核物理]