Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1998-06-05
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, 6 figures, presented at XXXIIIrd Recontres de Moriond, QCD AND HIGH ENERGY HADRONIC INTERACTIONS,Les Arcs, Savoie, Fr
Scientific paper
The CDF and \D0 collaborations have used recent data taken at the Tevatron to perform QCD tests with $W$ and $Z$ bosons decaying leptonically. \D0 measures the production cross section times branching ratio for $W$ and $Z$ bosons. This also gives an indirect measurement of the total width of the $W$ boson: $\gw=2.126\pm0.092 GeV$. CDF reports on a direct measurement of $\gw=2.19\pm0.19 GeV$, in good agreement with the indirect determination and Standard Model predictions. \D0's measurement of the differential $d\sigma/dp_T$ distribution for $W$ and $Z$ bosons decaying to electrons agrees with the combined QCD perturbative and resummation calculations. In addition, the $d\sigma/dp_T$ distribution for the $Z$ boson discriminates between different vector boson production models. Studies of $W+ Jet$ production at CDF find the NLO QCD prediction for the production rate of $W+\ge1 Jet$ events to be in good agreement with the data.
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