介子云对质子和中子形状因子的影响

Effect of Meson Cloud on Electromagnetic form Factors of Nucleon

利用夸克模型，考虑π介子云对质子，特别是中子的形状因子的影响，计算了质子和中子的电磁形状因子．对中子的性质给予了较好的描述．

A relativistic quark potential model is employed to study the electromagnetic form factors of the proton and neutron. Moreover, the pion meson cloud effect is also taken into account. The nucleon wave function is described in an extended Fock space with the intermediate states N and △. The result shows the important role of the meson cloud on the neutron electroic form factor.