Electromagnetic form factors of Σ+ and Σ− in the vector-meson dominance model

Zhong-Yi Li,Ju-Jun Xie

Figure 2. Theoretical results for the ratio of $| {G}_{\mathrm{eff}}{| }_{{{\rm{\Sigma }}}^{+}}/| {G}_{\mathrm{eff}}{| }_{{{\rm{\Sigma }}}^{-}}$ compared with the experimental data taken from [4].