夸克蜕定域色屏蔽模型、双夸克模型和五夸克态Θ^+  

Quark-Delocalization,Color-Screening Model,Diquark Model and Pentaquark Θ^+

作　　者：龚丽英[1] 黄虹霞[1] 平加伦[1] 

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2005年第3期47-51,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(90103018)

摘　　要：将夸克蜕定域色屏蔽模型和双夸克模型结合起来,研究了五夸克共振态Θ+.计算结果表明,正、负宇称态都存在等效吸引,但在能够描述重子谱和重子重子相互作用的要求下,得到的能量偏高,并且负宇称态的能量低于正宇称态.The QDCSM and diquarks model are used for the calculation of pentaquark resonance Θ^＋. The results show that there are effective attractions both in the positive and negative parity states. Under the requirement that the model can describe the baryon spectroscopy and baryon-baryon interactions, the energy of Θ^＋ calculated is higher than the value of the measured one. The energy of negative parity state is lower than that of the positive one.

关 键 词：夸克蜕定域色屏蔽模型 双夸克模型 五夸克态 

分 类 号：O572.33[理学—粒子物理与原子核物理]