S. Pepin, Fl. Stancu, M. Genovese, J. -M. Richard
Published 1996-08-27Version 1
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.
Comments: 6 pages, Plain Latex, Contribution to the Workshop''Quark Confinement and the Hadron Spectrum II'', Como, Italy, June 26--29, 1996, to appear in the Proceedings, ed. Nora Brambilla, World Scientific
Nuclear Structure Functions from Constituent Quark Model
On the fourth P_11 resonance predicted by the constituent quark model
Effects of Negative Energy Components in the Constituent Quark Model
