Nucleon form factors and resonance particles

Summary  Nucleon form factors are discussed on assumption that there are no lighter particles, which have dominant contributions to the nucleon structures, than ϱ and ω. The form factors are determined experimentally by taking into account effects of higher mass states. Four-pion state is considered as a higher mass state, and for this purpose we take a model in which the four pions are replaced by pion and ω. Results of calculations have qualitatively good tendency compared with the form factors. It seems that the possibility of the assumption stated above could not be excluded at the present stage of the experiments.