Abstract
We consider the electromagnetic decays of the orbitally excited SU(6) 70-plet baryons, to compare the predictions of the naive quark model with those of large-${N}_{c}$ QCD. The helicity amplitudes measured in ${N}^{*}$ photoproduction are computed in a large-${N}_{c}$ effective field theory, based on a Hartree approximation, and the amplitudes are fit to the current experimental data. Our results indicate that the success of the naive quark model predictions cannot be explained by large-${N}_{c}$ arguments alone. This is consistent with the conclusions of an earlier study of the ${N}^{*}\ensuremath{\rightarrow}N\ensuremath{\pi}$ decays that utilized the same approach.
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