W + jet production at CDF

A measurement of W → eν + n-jet cross sections in p(bar p) collisions at √s = 1.96 TeV using the Collider Detector at Fermilab in Run II (CDF II) is presented. The measurement is based on an integrated luminosity of 320 pb-1, and includes events with up to 4 or more jets. In each jet multiplicity sample the differential and cumulative cross sections with respect to the transverse energy of the ith jet are measured. For W+ (ge) 2 jets the differential cross section with respect to the 2-leading jets invariant mass mj#sub 1#j#sub 2# and angural separation Δ Rj#sub 1#j#sub 2# is also reported. The data are compared to predictions from Monte Carlo simulations