UNSPECIFIED (2011) Measurement of the W+W- Cross Section in root s=7 TeV pp Collisions with ATLAS. Physical review letters, 107 (4): 041802. ISSN 1079-7114
PhysRevLett.107.041802.pdf - Published Version
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Abstract
This Letter presents a measurement of the W+W- production cross section in root s = 7 TeV pp collisions by the ATLAS experiment, using 34 pb(-1) of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7 +/- 0.6 events. The measured cross section is 41(-16)(+20)(stat) +/- 5(syst) +/- 1(lumi) pb, which is consistent with the standard model prediction of 44 +/- 3 pb calculated at next-to-leading order in QCD.