Abstract
The mass spectrum of the low-lying ground-state baryons is calculated in a chiral quark model taking into account the contributions of the residual quark-pion coupling arising out of the requirement of chiral symmetry and that of the quark-gluon coupling due to one-gluon exchange in a perturbative manner, over and above the necessary centre-of-mass correction. The baryons are assumed here as an assembly of independent quarks confined in a first approximation by an effective square-root potential which presumably represents the non-perturbative gluon interactions. The baryonic mass spectrum so obtained agree quite well with the corresponding experimental data. The quark-gluon coupling constant required here to explain the QCD mass splittings is quite consistent with the idea of considering the gluonic corrections in lowest-order perturbation theory.
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