Proton Form Factor Measurements at Jefferson Lab

摘要

We report the results of a series of measurements of the ratio of the electric-and magnetic form factors of elastic ep scattering, GEP/GMP up to Q2 - 5.6 GeV2, using the recoil polarization method A new experiment to measure GEP/GMP to Q2=9 GeV2 is currently being prepared The understanding of the structure of the nucleon is of fundamental importance in nuclear and particle physics. The internal structure of the nucleon is revealed by its root mean square radius, anomalous magnetic moment, charge and current distributions, polar izabilities and transition amplitudes to excited baryonic states.