Electroweak Physics Results from the DZero Detector at Fermilab

Abstract

We present electroweak physics results from the DZero experiment using data from collisions at \sqrt{s} = 1.8 TeV, concentrating on single W and Z production cross sections and the production of electroweak gauge boson pairs. The inclusive cross sections times branching ratios for W and Z production have been measured and are used to determine the inclusive width of the W boson. Direct tests of the WW\gamma and WWZ trilinear gauge boson couplings are derived from the study of diboson production. These measurements test the non-abelian self couplings of the W, Z and photon, one of the most direct consequences of the SU(2)_L \times U(1)_Y gauge symmetry. We present measurements of the WW\gamma coupling based on p pbar --> l \nu \gamma + X and limits on anomalous WWZ and WW\gamma couplings based on searches for p \pbar --> W^+ W^- + X --> l l' \nu \nubar + X and p \pbar --> WW / WZ + X --> e \nu + jets + X. We also present limits on the ZZ\gamma and Z\gamma\gamma couplings based on p pbar --> l^+ l^- \gamma + X events.