Measurement of W and Z boson production and extraction of the W width and branching ratios at CDF

摘要

We present results from W and Z boson production in proton-antiproton collisions at (radical)s = 1.8 TeV using the CDF detector. We measure the W and Z cross sections times lepton branching ratio, (sigma)(p(bar p) (yields) W)(center dot)B(W (yields) l(nu)(sub l)) and (sigma)(p (bar p) (yields) Z)(center dot) B(Z (yields) k(sup +)l(sup (minus))) l = e, (mu). We also measure the ratio: R(sub l) = (sigma) (center dot) B(W (yields) l(nu)(sub l))/(sigma) (center dot) B(Z (yields) ll). From R(sub l), we extract the W electron and muon branching ratios, BR(W (yields) l(nu)(sub l), and the total W width, (Gamma)(sub W). In addition, high transverse mass W (yields)e(nu)(sub e), candidates provide an alternate, direct measurement of (Gamma)(sub W).