Mass Spectrum of Baryons in a Relativistic Hypercentral Constituent Quark Model

We have investigated the light and strange baryons as a relativistic three-body bound system. Inspired by lattice QCD calculations, we treated the baryons as a spin-independent three-quark system. For this purpose we introduced a spin independent relativistic description for the SU(6) invariant part of the spectrum by presenting the analytical solution of the three-particle Klein-Gordon equation. We carried out calculations within the constituent quark model based on a hypercentral approach, which takes into account three-body force effects and standard two-body potential contributions. Herewith the average energy values of the nonstrange and strange resonances are reproduced. Then we used the generalized Giirsey-Radicati mass formula as a SU(6) breaking interaction to describe the splittings within the SU(6)-multiplets and the hyperfine structure of the baryon. The considered SU(6)-invariant potential is the well-known "Coulomb-plus-linear" potential. The resulting description of the baryon spectrum is fairly good and comparable with the experimental spectrum.