Measurement of Jet Multiplicity In W-events Produced In P(p)over-bar Collisions At Root-s=1.8 Tev

The W production cross section times the branching ratio for W→Iv, l=e,μ decays has been measured as a function of the associated jet multiplicity. The data have been recorded at the Collider Detector at Fermilab during the 1988-89 run. A recent leading order QCD calculation agrees well with the data up to a jet multiplicity of 4