The 27-plet baryons with spin 3/2 under SU(3) symmetry

Details The 27-plet baryons with spin 3/2 under SU(3) symmetry The 27-plet baryons with spin 3/2 under SU(3) symmetry

2006-06-28

arxiv.org/abs/hep-ph/0606282v1

Eur.Phys.J.A28:345-349,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure, to appear in EPJA

Scientific paper

10.1140/epja/i2006-10063-3

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 $\Lambda(1780)$. 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 $\Xi(1950)$ has spin and parity $J^p=3/2^-$. The possibility of assigning the non-exotic candidates to an octet is also analyzed.

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