TETRAQUARK $X(ud\bar s\bar s)$ PRODUCTION IN pn → ΛΛX

Abstract

We propose to search for a tetraquark candidate [Formula: see text] in [Formula: see text] or ΛΛKK*. The existence of tetraquark state [Formula: see text] was predicted in the literature due to specific diquark effective degrees of freedom inside hadrons. In order to understand the underlying dynamics for exotic hadrons, a search for the tetraquark [Formula: see text] is strongly recommended. We make an estimate of the production rate of [Formula: see text] in an effective lagrangian theory. The proposed reaction involves two Λ production, of which the narrow widths make it a great advantage in the analysis of the final state missing mass spectrum.