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

Zhong-Yi Li,Ju-Jun Xie

Figure 5. Results of the electric form factor GE of the Σ+ and Σ−. The blue dotted line is the result of lattice QCD [34]. The red dashed curves are the results of LCSR [35]. The purple dot-and-dashed curves are the result of chiral perturbation theory [36].