Non-perturbative Gluons and Pseudoscalar Mesons in Baryon Spectroscopy
  We study baryon spectroscopy including the effects of pseudoscalar meson exchange and one gluon exchange potentials between quarks, governed by $\alpha_s$. The non-perturbative, hyperspherical method calculations show that one can obtain a good description of the data by using a quark-meson coupling constant that is compatible with the measured pion-nucleon coupling constant, and a reasonably small value of $\alpha_s$. 
Z. Dziembowski (Temple University),M. Fabre de la Ripelle (Universite   de Paris-Sud) and Gerald A. Miller (U. of Washington)