Are there compact heavy four-quark bound states?

Abstract

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, non-molecular, four-quark bound states. While $QQ\bar{n}\bar{n}$ states may be stable in nature, the stability of $Q\bar{Q}n\bar{n}$ states would imply the existence of quark correlations not taken into account by simple quark dynamical models

10 pages, 1 figure. Accepted for publication in Phys. Rev. D

References in corpus (2)

• Constituent quark model study of the meson spectra
• Quark-model study of few-baryon systems

Cited by in corpus (1)

• Exotic c c-bar Mesons