  We obtain the light-front wavefunctions for the nucleon in the valence quark
Fock space from an effective Hamiltonian, which includes the transverse and
longitudinal confinement and the one-gluon exchange interaction with fixed
coupling. The wavefunctions are generated by solving the eigenvalue equation in
a basis light-front quantization. Fitting the model parameters, the
wavefunctions lead to good simultaneous description of electromagnetic form
factors, radii, and parton distribution functions for the proton.
