Multiquark Systems in a Constituent Quark Model with Chiral Dynamics

Abstract

We discuss the stability of multiquark systems within the recent model of Glozman et al. where the chromomagnetic hyperfine interaction is replaced by pseudoscalar-meson exchange. We find that such an interaction binds a heavy tetraquark system QQ q q (Q=c, b and q=u, d) by 0.2-0.4 GeV. This is at variance with results of previous models where cc q q is unstable.

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