Octet baryon charge radii, chiral symmetry, and decuplet intermediate states

Abstract
We compute the octet baryon charge radii to O(1/Λχ2MN) in heavy baryon chiral perturbation theory (HBχPT). We examine the effect of including the decuplet of spin-32 baryons explicitly. We find that it does not improve the level of agreement between the HBχPT and experimental values for the Σ charge radius.
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