Are there compact heavy four-quark bound states?
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Vijande Asenjo, Javier; Weissman, E.; Valcarce Mejía, Alfredo; Barnea, Nir
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Aquest document és un/a article, creat/da en: 2007
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We present an exact method to study four-quark systems based on the hyperspherical harmonics formalism. We apply it to several physical systems of interest containing two heavy and two light quarks using different quark-quark potentials. Our conclusions mark the boundaries for the possible existence of compact, nonmolecular, four-quark bound states. While QQ (n) over bar(n) over bar states may be stable in nature, the stability of Q (Q) over barn (n) over bar states would imply the existence of quark correlations not taken into account by simple quark dynamical models. |
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