Pentaquark implications for exotic mesons

If the exotic baryon ${\Theta }^{+}(1540)$ is a correlated $udud\overline{s}$ with $J^P=\frac{1^{+}}{2}$, then there should exist an exotic meson ${\vartheta }^{+}$ with strangeness $+2$, $J^P=1^{-}$, mass $\sim 1.6\mathrm{G}\mathrm{e}\mathrm{V}$, decaying to $K^{+}{K}^0$ with width $O(10–100)\mathrm{M}\mathrm{e}\mathrm{V}$. The ${\pi }_1(1400;1600)$ may be broad members of $\mathbf{10}\pm \overline{\mathbf{10}}$ in such a picture, and it is possible that vector mesons in the 1.4–1.7 GeV mass range are related to this multiplet. We suggest that dynamical correlations may limit the spectrum of $J^{P(C)}$ such that the $1^{-(\pm )}$ states are isolated.