First Evidence of WW/WZ -> lnuqq at the Tevatron

Abstract

We present the first evidence from a hadron collider of WW+WZ production with semi-leptonic decays. The data were recorded by the D0 detector at the Fermilab Tevatron and correspond to 1.07 inverse femtobarn of integrated luminosity obtained in proton-antiproton collisions at sqrt(s) = 1.96 TeV. The cross section observed for WW+WZ production is 20.2 +- 4.5 pb with a significance of 4.4 standard deviations.

arXiv comment5 pages, 9 figures. Proceedings of the XLIVth Rencontres de Moriond session devoted to Electroweak Interactions and Unified Theories, March 7-14, 2009