Observation of WZ Production
High Energy Physics - Experiment
2012-08-27 v1
Abstract
We report the first observation of the associated production of a W boson and a Z boson. This result is based on 1.1 fb-1 of integrated luminosity from ppbar collisions at sqrt{s} = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. We observe 16 WZ candidates passing our event selection with an expected background of 2.7 +/- 0.4 events. A fit to the missing transverse energy distribution indicates an excess of events compared to the background expectation corresponding to a significance equivalent to six standard deviations. The measured cross section is sigma(ppbar -> WZ) = 5.0^{+1.8}_{-1.6} pb, consistent with the standard model expectation.
Cite
@article{arxiv.hep-ex/0702027,
title = {Observation of WZ Production},
author = {CDF Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0702027},
year = {2012}
}
Comments
7 pages, 3 figures. Submitted to Phys. Rev. Lett