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Baryon Charge Radii and Quadrupole Moments in the 1/N_c Expansion: The 3-Flavor Case
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Baryon Charge Radii and Quadrupole Moments in the 1/N_c Expansion: The 3-Flavor Case
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We develop a straightforward method to compute charge radii and quadrupole moments for baryons both with and without strangeness, when the number of QCD color charges is N_c. The minimal assumption of the single-photon exchange ansatz implies that only two operators are required to describe these baryon observables. Our results are presented so that SU(3) flavor and isospin symmetry breaking can be introduced according to any desired specification, although we also present results obtained from two patterns suggested by the quark model with gluon exchange interactions. The method also permits to extract a number of model-independent relations; a sample is r^2_Lambda / r_n^2 = 3/(N_c+3), independent of SU(3) symmetry breaking.
Forward citations
Cited by 1 Pith paper
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