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Evidence of WW+WZ production with lepton + jets final states in proton-antiproton collisions at sqrt(s)=1.96 TeV

Research output: Contribution to journalJournal article


Article number161801
<mark>Journal publication date</mark>21/04/2009
<mark>Journal</mark>Physical Review Letters
Number of pages7
<mark>Original language</mark>English


We present the first evidence of WW+WZ production with lepton+jets final states at a hadron collider. The data correspond to 1.07 inverse femtobarns of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider in proton-antiproton collisions at sqrt(s)=1.96 TeV. The observed cross section for WW+WZ production is 20.2 +/- 4.5 pb, consistent with the SM prediction of 16.1 +/- 0.9 pb. The probability for background fluctuations to produce an excess equal to or larger than that observed is estimated to be 5.4e-6, corresponding to a significance of 4.4 standard deviations.

Bibliographic note

© 2009 The American Physical Society 11 pages, 4 figures, 3 tables, published in Physical Review Letters, updated to published version