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^+

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.