The 27-plet Baryons from Chiral Soliton Models

Details The 27-plet Baryons from Chiral Soliton Models The 27-plet Baryons from Chiral Soliton Models

2003-12-02

arxiv.org/abs/hep-ph/0312041v2

Phys.Rev. D69 (2004) 077501

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages in Revtex format, 1 figure, version to appear in PRD

Scientific paper

10.1103/PhysRevD.69.077501

We use the perturbation method to calculate the masses and widths for 27-plet baryons with spin 3/2 from chiral soliton models. According to the masses and quantum numbers, we find all the candidates for non-exotic members of 27-plet. The calculation of the widths shows that these candidates manifest an approximate symmetry of the 27 representation of the SU(3) group, and the quantum numbers of $\Xi(1950)$ seem to be $I(J^P)={1/2}({3/2}^+)$. Up to leading order of the strange quark mass, we find that the exotic members have widths much larger than those of the anti-decuplet members.

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