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 quar...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.展开更多
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)
文摘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.
