ABSTRACT
In the spectrum of low-lying baryons, the octet with spin 1/2 and the decuplet with spin 3/2 are not very far apart in mass. Typical splittings between the octet and decuplet states are not so different from splittings within the SU(3) representations. Many physicists played with the idea of embedding SU(3) in some larger symmetry group that would connect the two representations. The magnetic moment of the baryon is simply the sum of the magnetic moments of the quarks. The magnetic moment of a quark is Qe2m in the direction of the spin where m is the quark mass. The quark model is not only simpler, it is more predictive. It also gives a reasonable account of some SU(3) breaking effect in the baryon magnetic moments.
