Size and shape of baryons in a large Nc quark model
Abstract
Baryon charge radii and quadrupole moments are calculated in a quark model generalized to an arbitrary number (Nc) of colors. Several relations among the charge radii and quadrupole moments are found. In particular, a previously derived relation between the neutron charge radius and the N-->Delta transition quadrupole moment is shown to hold for physical baryons as well in the large Nc limit.
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