Abstract
Nucleon form factors are calculated in a relativistic diquark-quark picture based on the Nambu-Jona-Lasinio model. The nucleon wave function is obtained in a static approximation to the quark exchange interaction between the valence quark and the diquark. We evaluate the valence quark and 0 +-diquark contribution to the nucleon electromagnetic and weak currents. We find reasonable electric charge radii, magnetic moments as in the additive diquark model, and g A ≈ 1. We discuss the dependence on the model parameters.
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