Multiquark Systems in a Constituent Quark Model with Chiral Dynamics

Details Multiquark Systems in a Constituent Quark Model with Chiral Dynamics Multiquark Systems in a Constituent Quark Model with Chiral Dynamics

1996-08-27

arxiv.org/abs/nucl-th/9608058v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, Plain Latex, Contribution to the Workshop''Quark Confinement and the Hadron Spectrum II'', Como, Italy, June 26--29,

Scientific paper

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 $QQ\bar q\bar q$ ($Q=c, b$ and $q=u, d)$ by $0.2-0.4$ GeV. This is at variance with results of previous models where $cc\bar q\bar q$ is unstable.

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