2001/06/05 by D0 Collaboration, V. M. Abazov
Physics and Astronomy · #hep-ex
published as Phys.Lett. B517 (2001) 299-308 · 14 pages, 2 figures, submitted to EPS and Lepton Photon 2001
arxiv created 2001/06/05 · arxiv updated 2009/11/30
We report on a preliminary measurement of the ratio of the differential cross sections for W and Z boson production as a function of transverse momentum in proton-antiproton collisions at √(s) = 1.8 TeV. It has been shown that the ratio between W and Z observables can be reliably calculated using perturbative QCD, even when the individual observables are not. We present the first comparison between the measurement of a W and Z observable ratio and a purely perturbative calculation. The use of the ratio reduces both experimental and theoretical uncertainites and might result in smaller overall uncertainties on the measured W mass and width, compared to currently used methods at hadron colliders.