Baryon Isovector Electric Properties and the Large N_c and Chiral Limits

Abstract

A model independent calculation is given for the nucleon isovector electric charge radius which is valid in the limit $N_c \rightarrow \infty$, $m_\pi \rightarrow 0$, $N_c m_\pi$ fixed. This expression reduces to that of the Skyrme model in the limit $N_c m_{\pi} \rightarrow \infty$.