多夸克系统中的湮灭相互作用与新强子态X(3872)研究  

Study on Annihilation Interaction in Multi-Quark Systems and the New Hadron State X(3872)

作　　者：谭志云[1] 杨友昌[1,2] 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 [2]南京大学物理学院,南京210093

出　　处：《西南大学学报（自然科学版）》2017年第5期145-149,共5页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金(11265017);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;黔科合J字LKZS[2014]31号;黔科合J字LKZS[2012]05号);贵州省物理学特色重点学科(黔学位合字ZDXK[2015]12号;黔教合人才团队字[2012]08号)

摘　　要：考虑多夸克系统内部正反夸克对湮灭为有效胶子,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,研究了ccuu系统的能谱,不仅合理地解释了新强子态X(3872),而且还发现了J^(PC)=2^(++)的D^(0*)D^(0*)弱束缚态,并为BES和LHCb等国际实验合作组探测该粒子提出了建议.Taking into account an effective one-gluon exchange between quark-antiquark, the authors deduced the annihilation interaction potential. The spectra of the c cu u system were calculated within a chiral constituent quark model with the same parameters as used in other works. In this work, the new hadron state X（3872） was convincingly explained, and a weak bound state D0＊D0＊ with quantum number J^PC=2＋＋ was discovered. Some proposals are offered in this paper to such international organizations for experiment collaboration as BES and LHCb for the exploration of this particle.

关 键 词：手征组分夸克模型 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]