Simple Quark Model with Chiral Phenomenology

Details Simple Quark Model with Chiral Phenomenology Simple Quark Model with Chiral Phenomenology

2002-03-04

arxiv.org/abs/hep-ph/0203023v2

Phys.Rev.C65:062201,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages (RevTeX4), 2 figures (PostScript)

Scientific paper

10.1103/PhysRevC.65.062201

We propose a new approach to the determination of hadronic observables in which the essential features of chiral symmetry are combined with conventional constituent quark models. To illustrate the approach, we consider the simple quark model in the limit of SU(3) flavour symmetry at the strange quark mass. The comparison with data is made after an analytic continuation which ensures the correct leading nonanalytic behaviour of chiral perturbation theory. The approach not only gives an excellent fit for the octet baryon magnetic moments but the prediction for the $\Delta^{++}$ magnetic moment is also in good agreement with current measurements.

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