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

  • 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.
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Hui Li, Zong-Xiu Wu, Chun-Sheng An and Hong Chen. Low-lying 1/2- hidden strange pentaquark states in the constituent quark model[J]. Chinese Physics C, 2017, 41(12): 124104. doi: 10.1088/1674-1137/41/12/124104
Hui Li, Zong-Xiu Wu, Chun-Sheng An and Hong Chen. Low-lying 1/2- hidden strange pentaquark states in the constituent quark model[J]. Chinese Physics C, 2017, 41(12): 124104.  doi: 10.1088/1674-1137/41/12/124104 shu
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Received: 2017-09-02
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    Supported by National Natural Science Foundation of China (11675131, 11645002), Chongqing Natural Science Foundation (cstc2015jcyjA00032) and Fundamental Research Funds for the Central Universities (SWU115020)

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

    Corresponding author: Chun-Sheng An,
  • 1. School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Fund Project:  Supported by National Natural Science Foundation of China (11675131, 11645002), Chongqing Natural Science Foundation (cstc2015jcyjA00032) and Fundamental Research Funds for the Central Universities (SWU115020)

Abstract: 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.

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