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arXiv · 1208.1742

Spectrum of low-lying $s^{3}Q\bar{Q}$ configurations with negative parity

S. G. Yuan·C. S. An·K. W. Wei·B. S. Zou·H. S. Xu
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Abstract

Spectrum of low-lying five-quark configurations with strangeness quantum number $S=-3$ and negative parity is studied in three kinds of constituent quark models, namely the one gluon exchange, Goldstone Boson exchange, and instanton-induced hyperfine interaction models, respectively. Our numerical results show that the lowest energy states in all the three employed models are lying at $\sim$1800 MeV, about 200 MeV lower than predictions of various quenched three-quark models. In addition, it is very interesting that the state with the lowest energy in one gluon exchange model is with spin 3/2, but 1/2 in the other two models.

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S. G. Yuan, C. S. An, K. W. Wei, B. S. Zou, H. S. Xu. 2012-08-08. Spectrum of low-lying $s^{3}Q\bar{Q}$ configurations with negative parity. https://doi.org/10.1103/physrevc.87.025205

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