Low-lying 1/2- hidden strange pentaquark states in the constituent quark model  

作　　者：李惠 邬宗秀 安春生 陈洪 

机构地区：[1]School of Physical Science and Technology, Southwest University, Chongqing 400715, China

出　　处：《Chinese Physics C》2017年第12期49-54,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11675131,11645002);Chongqing Natural Science Foundation(cstc2015jcyj A00032);Fundamental Research Funds for the Central Universities(SWU115020)

摘　　要：We investigate the spectrum of the low-lying 1/2- hidden strange pentaquark states, employing the constituent quark model, and looking at two ways within that model of mediating the hyperfine interaction between quarks – Goldstone boson exchange and one gluon exchange. Numerical results show that the lowest 1/2- hidden strange pentaquark state in the Goldstone boson exchange model lies at～1570 MeV, so this pentaquark configuration may form a notable component in S11（1535） if the Goldstone boson exchange model is applied. This is consistent with the prediction that S11（1535） couples very strongly to strangeness channels.We investigate the spectrum of the low-lying 1/2- hidden strange pentaquark states, employing the constituent quark model, and looking at two ways within that model of mediating the hyperfine interaction between quarks – Goldstone boson exchange and one gluon exchange. Numerical results show that the lowest 1/2- hidden strange pentaquark state in the Goldstone boson exchange model lies at～1570 MeV, so this pentaquark configuration may form a notable component in S11（1535） if the Goldstone boson exchange model is applied. This is consistent with the prediction that S11（1535） couples very strongly to strangeness channels.

关 键 词：quark model pentaquark states baryon resonances 

分 类 号：O572.33[理学—粒子物理与原子核物理]