"Super-radiance" and the width of exotic baryons

Abstract

It is suggested that the narrow width of the recently observed resonance ${\Theta }^{+}(1540)$ with strangeness $S=+1$ could be a result of the super-radiance mechanism of the redistribution of the widths of overlapping resonances due to their coupling through common decay channels.

Comments: This is an update of the original version submitted on October 08, 2003; it includes consideration of an additional model and one new figure