Measurement of the $W\to e\nu + \ge n-jet$ Cross Section at the Tevatron

Understanding direct $W$ + jets production is crucial to making accurate background predictions to both top quark production and many of the Higgs production channels. We present a measurement of the $W\to e\nu + \ge n-jet$ cross section at $\sqrt{s} = 1.96$~${\rm TeV}$ using $320$~${\rm pb^{-1}}$ of CDF Run II data. Distributions of various kinematic variables are compared with two different Monte Carlo matrix element plus parton shower (ME-PS) predictions: Enhanced Leading Order ALPGEN+HERWIG samples, and `ME-PS matched' CKKW MADGRAPH+PYTHIA samples.