Measurement of the Muonic Cross Section Times Branching Ratio of the W Boson and Z Boson, the Muonic Ratio of W Boson to Z Boson and Extraction of the Muonic Branching Fraction of W Bosons and W Boson Width in Proton - Collisions at 1.8 Tev.

We analyze the production of high transverse momentum muons produced by the proton-antiproton colliding beams at the Fermilab Tevatron and detected by the Collider Detector at Fermilab. We measure the W and Z production cross sections times muon branching ratio at a pp center of mass energy of sqrt{s} = 1.8 TeV and determine: sigma(p| pto W) cdot B(Wtomunu) = 2.521+/- 0.032(stat)+/- 0.106(syst)+/- 0.095(lum) nb and sigma(p| pto Z)cdot B(Ztomumu) = 0.1895+/- 0.0092(stat)+/- 0.0083(syst)+/- 0.0072(lum) nb. The data set corresponds to an integrated luminosity of int {cal L } = 18.82+/- 0.68 pb^{-1} . We also measure the ratio of these cross sections to be R_mu = sigmacdot B(Wtomunu)/sigmacdot B(Z tomumu) = 13.30+/- 0.67(stat)+/- 0.42(syst). From R_mu, we extract a value for the W muonic branching ratio: B(W tomunu) = Gamma(Wtomu nu)/Gamma(W) = 0.1345+/- 0.0068(stat)+/- 0.0045(syst) and the total W width: Gamma(W) = 1.689+/- 0.085(stat)+/- 0.057(syst) GeV . We use the branching ratio to look for unknown decay modes of the W. We compare the cross sections and W width to the recent theory predictions.