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arXiv:0911.4449 [hep-ex]AbstractReferencesReviewsResources

Measurement of the WW+WZ Production Cross Section Using the Lepton+Jets Final State at CDF II

The CDF Collaboration

Published 2009-11-23, updated 2010-03-10Version 2

We report two complementary measurements of the WW+WZ cross section in the final state consisting of an electron or muon, missing transverse energy, and jets, performed using p\bar{p} collision data at sqrt{s} = 1.96 TeV collected by the CDF II detector. The first method uses the dijet invariant mass distribution while the second more sensitive method uses matrix-element calculations. The result from the second method has a signal significance of 5.4 sigma and is the first observation of WW+WZ production using this signature. Combining the results gives sigma_{WW+WZ} = 16.0 +/- 3.3 pb, in agreement with the standard model prediction.

Comments: Version publised by PRL; shortened with minor changes.
Journal: Phys.Rev.Lett.104:101801,2010
Categories: hep-ex
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