The 35-plet Baryons from Chiral Soliton Models

Abstract

We investigate the 35-plet baryons from the chiral soliton models. We find that the coupling constant for the decay of 35-plet baryons with spin 3/2 to the decuplet baryons is surprisingly small, but that for the decay to 27-plet baryons with spin 3/2 is larger. We give all the masses and widths of 35-plet baryons with spin 5/2 and suggest candidates for all nonexotic members from the available particle listings. We also focus on ${\Delta }_{5/2}$ and ${\Theta }_2$, which are the lightest two baryons of 35-plet with spin 5/2 and with simplest minimal pentaquark configurations. Calculations show that ${\Gamma }_{{\Delta }_{5/2}}<$380 MeV, compared with the results from SU(2) Skyrme Model (${\Gamma }_{{\Delta }_{5/2}}>$800 MeV), and ${\Gamma }_{{\Theta }_2}<100$ MeV if we assume that their widths are dominated by two-body decay and that ${\Theta }^{+}$ has a width ${\Gamma }_{{\Theta }^{+}}<25$ MeV.

arXiv comment10 LaTex pages, 1 figure, to appear in PRD

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Cited by in corpus (3)

• Present status on experimental search for pentaquarks
• Baryon Spectrum in Large N(C) Chiral Soliton and in Quark Models
• Systematic study of pentaquark states: $qqq-q\bar{q}$ configuration