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Multiquark systems in a constituent quark model with chiral dynamics
Pepin S., Stancu F., Genovese M., Richard J.-M.
Dans Quark Confinement and the Hadron Spectrum II - 2nd International Conference on Quark Confinement and the Hadron Spectrum, Como : Italie - http://hal.in2p3.fr/in2p3-00139416
Physique/Physique Nucléaire Théorique
Multiquark systems in a constituent quark model with chiral dynamics
S. Pepin, F. Stancu, M. Genovese1, J.-M. Richard1
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
http://lpsc.in2p3.fr
CNRS : UMR5821 – IN2P3 – Université Joseph Fourier - Grenoble I – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
53 avenue des Martyrs - 38026 Grenoble Cedex
France
Theorie
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.

Communications avec actes
1997
Quark Confinement and the Hadron Spectrum II
internationale
N. Brambilla, G.M. Prosperi
World Scientific

2nd International Conference on Quark Confinement and the Hadron Spectrum
Como
Italie
26/06/1996
29/06/1996

ISN 9694
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/nucl-th/9608058