Production of gauge bosons at the Tevatron

The CDF and DO collaborations have used recent data, taken at the Tevatron to perform QCD tests with W and Z bosons decaying leptonically. DO measures the production cross section times branching ratio for W and Z bosons and determines the branching ratio B(W --> lv) = (10.43 +/- 0.44)% (l = e, mu). This also gives an indirect measurement of the total width of the W boson: Gamma w = 2.16 +/- 0.09 GeV. The W cross section times branching ratio into tau leptons is measured to be sigma((p) over bar p --> W + X)B(W --> tau v) = 2.38 +/- 0.13 nb, from which the ratio of the coupling constants is determined: g(tau)(W)/g(e)(W) = 1.004 +/- 0.019 +/- 0.026. DO's measurement of the differential d sigma/dP(T) distribution for the Z boson decaying to electrons, discriminates between different phenomenologic vector boson production models. CDF measures the cross section for the Drell-Yan continuum, and extracts improved limits on compositeness scales for quarks and leptons of Lambda(ql) similar to 3 - 6 TeV, depending on the model. Studies of W + Jet production at CDF and DO find that the QCD prediction underestimates the production rate of W + 1 Jet events by about a factor of 2 as measured by both collaborations.