The width of Θ+ for large Nc in chiral quark soliton model

In the chiral quark soliton model the smallness of Theta(+) width is due to the cancellation of the coupling constant's which are of different order in N-C. We show that taking properly into account the flavor structure of relevant SU(3) representations for arbitrary number of colors enhances the nonleading term by an additional factor of N-C, making the cancellation consistent with the N-C counting. Moreover, we show that, for the same reason, Theta(+) width is suppressed by a group-theoretical factor O(1/N-C) with respect to Delta and discuss the N-C dependence of the phase space factors for these two decays. (C) 2004 Published by Elsevier B.V.