A naturally narrow positive-parity ${\Theta }^{+}$

We present a consistent color-flavor-spin-orbital wave function for a positive-parity ${\Theta }^{+}$ that naturally explains the observed narrowness of the state. The wave function is totally symmetric in its flavor-spin part and totally antisymmetric in its color-orbital part. If flavor-spin interactions dominate, this wave function renders the positive-parity ${\Theta }^{+}$ lighter than its negative-parity counterpart. We consider decays of the ${\Theta }^{+}$ and compute the overlap of this state with the kinematically allowed final states. Our results are numerically small. We note that dynamical correlations between quarks are not necessary to obtain narrow pentaquark widths.