Regular Article - Theoretical Physics
Effects of a spin-flavour-dependent interaction on the baryon mass spectrum
Helmholtz Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn, Nußallee 14-16, D-53115, Bonn, Germany
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Accepted: 30 November 2011
Published online: 23 December 2011
The effective quark interaction in a relativistically covariant constituent quark model based on the Salpeter equation is supplemented by an extra-phenomenological flavour-dependent force in order to account for some discrepancies mainly in the description of excited negative-parity Δ resonances. Simultaneously an improved description of some other features of the light-flavoured baryon mass spectrum and of some electromagnetic form factors is obtained.
© SIF, Springer-Verlag Berlin Heidelberg, 2011