Nucleon elastic form factors in a relativistic quark model*

Nucleon elastic form factors are described using a light-cone (relativistic) quark model. The constituent quarks have anomalous magnetic moments fit to the nucleon magnetic moments, and simple form factors fit to the higher-$Q^2$ behavior of the nucleon electric and magnetic form factors. This model is able to explain the rapidly decreasing ratio of the proton electric to magnetic form factors, and also predicts a zero in the proton electric form factor at approximately 7 GeV$^2$, which is where the trend of the recent data for $G^p_E$ suggests it should be.