The electric form factor of the neutron and its chiral content

摘要

Considering the nucleon as a system of confined valence quarks surrounded by pions we derive a Galster-like parameterization of the neutron electric form factor G_E~n. Furthermore, we show that the proposed parameterization can be linked to properties of the pion cloud. By this, the high-quality data for the pion form factor can be used in predictions of G_E~n in the low-Q~2 region, where the direct double-polarization measurements are not available.