English

The 35-plet Baryons from Chiral Soliton Models

High Energy Physics - Phenomenology 2009-11-10 v2 High Energy Physics - Experiment Nuclear Experiment Nuclear Theory

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 Δ5/2\Delta_{5/2} and Θ2\Theta_2, which are the lightest two baryons of 35-plet with spin 5/2 and with simplest minimal pentaquark configurations. Calculations show that ΓΔ5/2<\Gamma_{\Delta_{5/2}}<380 MeV, compared with the results from SU(2) Skyrme Model (ΓΔ5/2>\Gamma_{\Delta_{5/2}}>800 MeV), and ΓΘ2<100\Gamma_{\Theta_{2}}<100 MeV if we assume that their widths are dominated by two-body decay and that Θ+\Theta^+ has a width ΓΘ+<25\Gamma_{\Theta^+}<25 MeV.

Keywords

Cite

@article{arxiv.hep-ph/0408121,
  title  = {The 35-plet Baryons from Chiral Soliton Models},
  author = {Bin Wu and Bo-Qiang Ma},
  journal= {arXiv preprint arXiv:hep-ph/0408121},
  year   = {2009}
}

Comments

10 LaTex pages, 1 figure, to appear in PRD