Abstract
SU(3) flux-tube dynamics and asymptotic freedom are incorporated into a semirelativistic quark model of baryons and mesons. Good agreement with the energy levels of spin-averaged multiplets of mesons and baryons is obtained using conventional values for the strong-interaction coupling constant , the string tension , and the constituent quark mass . We calculate meson energy levels with angular momentum and baryon levels with to within 3% of their experimental values. Baryon radial excitations are also considered and the Roper resonance is calculated with ∼5% error. The three-body wave equation for the baryons is solved approximately using variational Monte Carlo methods which have been developed previously for nuclear-physics problems.
- Received 16 July 1982
DOI:https://doi.org/10.1103/PhysRevD.27.233
©1983 American Physical Society