We study the large N c behavior of couplings among light meson states with different
compositions in terms of quarks and gluons. We shortly review the most common …

An algebraic model is proposed which simulates the strong interaction between quarks, for
the description of hadron states. The model is based on the SO (4)-group. The effects of the …

We discuss pure qq¯ axial-vector mesons in the Tamm-Dancoff approximation of the
Coulomb-gauge QCD model from North Carolina State University. While recent studies have …

A new Hamiltonian model is introduced to study the spectrum of light hadrons. It combines
relativistic field theory with elements of the constituent quark model. In addition to the …

The spectrum of tetraquark states with hidden charm is studied within an effective Coulomb
gauge Hamiltonian approach. Of the four independent color schemes, two are investigated …

Hadron structure advances provided by the Coulomb gauge model are summarized.
Highlights include a realistic description of the vacuum and meson spectrum with chiral …

Within the framework of a nonlinear chiral Lagrangian we explore the nontrivial nature of f0
(600) and f0 (1370) in terms of quarkonium, tetraquark and gluonium components. The mass …

We present a new computation in a field-theoretical model of Coulomb-gauge QCD of the
first radial and angular excitations of aqqq system in an SU (3) flavor-singlet state, Λ S. The …

arXiv:0804.2573v1 [hep-ph] 16 Apr 2008 The spectrum of scalar-meson nonets in the
Resonance-Spectrum Expansion∗ Page 1 arXiv:0804.2573v1 [hep-ph] 16 Apr 2008 The …

We consider a system composed of two identical light quarks (qq) and two identical
antiquarks (Q¯ Q¯) that can be linked either as two mesons or as a tetraquark, incorporating …