${\Theta }^{+}$ pentaquark in the nuclear medium

Abstract

We study the interaction of the ${\Theta }^{+}$ pentaquark with nuclear matter associated to the $KN$ decay channels and to the two meson cloud. We find that the potential is attractive and could be strong enough to lead to the existence of ${\Theta }^{+}$ nuclear bound states.

Invited talk at the International Workshop on Strangeness Nuclear Physics,July 29-31, 2004,Osaka University, Osaka, Japan