Multiquark systems in a constituent quark model with chiral dynamics

S. Pepin F. Stancu M. Genovese 1 J.-M. Richard 2
2 Theorie
LPSC - Laboratoire de Physique Subatomique et de Cosmologie
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 $QQ\bar q\bar q$ ($Q=c, b$ 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.
docType_s : Conference papers
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Submitted on : Friday, March 30, 2007 - 4:00:03 PM
Last modification on : Friday, March 30, 2007 - 4:00:03 PM

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S. Pepin, F. Stancu, M. Genovese, J.-M. Richard. Multiquark systems in a constituent quark model with chiral dynamics. N. Brambilla, G.M. Prosperi. 2nd International Conference on Quark Confinement and the Hadron Spectrum, Jun 1996, Como, Italy. World Scientific, 1997. <in2p3-00139416>

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