  D0 has used W -> e nu events produced in association with a high $p_T$ jet to
examine the effects of strong radiative corrections. We have compared the
primary jet pseudorapidity distribution, as a function of reconstructed W
rapidity to leading order (LO) and next to leading order (NLO) QCD Monte
Carlos, as well as a model based on extended color dipoles. Our preliminary
analysis finds that the primary jet is more central than either LO or NLO
expectations and is in qualitative agreement with the color dipole model.
