Mw. Beinker et al., BOUND Q(2-)Q(2) STATES IN A CONSTITUENT QUARK-MODEL, Journal of physics. G, Nuclear and particle physics, 22(8), 1996, pp. 1151-1159
We consider the existence of bound systems consisting of two quarks an
d two antiquarks (<q(2)(q)over bar>(2)) within the framework of a cons
tituent quark model. The underlying quark dynamics are described by a
linear confinement potential and an effective <q(2)(q)over bar>(2) int
eraction which has its origin in instanton effects of QCD. We calculat
e the spectra and examine the internal structure of the states found.