On strange SU(3) partners of Theta+

Abstract

We propose a scenario in which Roper octet can mix with a putative antidecuplet of exotic baryons and predict the properties of its strange members. We show that 1795 MeV < M_Sigma_{\bar{10}} <1830 MeV and 1900 MeV < M_Xi_{\bar{10}}<1970 MeV. We also estimate total widths: 10 MeV < Gamma_Σ_{\bar{10}}< 30 MeV} and Gamma_Ξ_{\bar{10}}\sim 10 MeV and branching ratios for different decay modes.

24 pages,11 figures, in v2 some typos correceted and some small changes in the text

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Cited by in corpus (6)

• Possibility of the existence of charmed exotica
• Pion momentum distributions in the nucleon in chiral effective theory
• Mass splittings of SU(3) baryons within a chiral soliton model
• On Narrow Nucleon Excitation N*(1685)
• Importance of Mixing for Exotic Baryons
• New narrow nucleon resonances $N^{\ast }(1685)$ and $N^{\ast }(1726)$ within the chiral quark-soliton model