New Family of Exotic $\Theta$-Baryons

Abstract

From the interpretation of the ${\Theta }^{+}$ baryon resonance as an excitation of the ``skyrmion liquid'' with SU(3) flavor symmetry $\overline{10}$ we deduce a new series of baryons, ${\Theta }_1^{++}$, ${\Theta }_1^{+}$ and ${\Theta }_1^0$, situated at the top of the 27-plet of SU(3) flavor, with hypercharge Y=2, isospin T=1 and spin $J=\frac{3}{2}$. The mass of ${\Theta }_1$ is estimated 55 MeV/c^2 higher then the mass of ${\Theta }^{+}$ and its width at 80 MeV. We also discuss the other baryons from the 27-plet.

4 pages, 1 figure