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Octet Baryon Charge Radii, Chiral Symmetry and Decuplet Intermediate States

S. J. Puglia, M. J. Ramsey-Musolf, Shi-Lin Zhu

hep-pharXiv:hep-ph/0008140

Abstract

We compute the octet baryon charge radii to O(1/Heavy3) in heavy baryon chiral perturbation theory. We examine the effect of including the decuplet of spin-3/2 baryons explicitly. We find that it does no t improve the level of agreement between the HBchiPT and experimental values for the Sigma- charge radius.

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