The 27-plet baryons with spin 3/2 under SU(3) symmetry
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- 作者：Qihua Zhou and Bo-Qiang Ma
- 关键词：PACS. 11.30.Hv Flavor symmetries ; 12.39.Mk Glueball and nonstandard multi ; quark/gluon states ; 13.30.Eg Hadron decays
- 刊名：The European Physical Journal A - Hadrons and Nuclei
- 出版年：2006
- 出版时间：June, 2006
- 年：2006
- 卷：28
- 期：3
- 页码：345-349
- 全文大小：108 KB
文摘
We investigate the spin-3/2 baryons in the 27-plet based on flavor SU(3) symmetry. For J p = 3/2+, we find all the candidates for non-exotic members. For J p = 3/2-, we predict a new non-exotic member Λ(1780). Fitting the mass spectrum and calculating the widths of the members show an approximate symmetry of the 27-plet of SU(3). We find that the exotic members have relatively large widths and the Ξ(1950) has spin and parity J p = 3/2-. The possibility of assigning the non-exotic candidates to an octet is also analyzed.