Measurement of the WW cross section in √s=7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings

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Article history: Received 28 March 2012 Received in revised form 26 April 2012 Accepted 2 May 2012 Available online 7 May 2012 Editor: H. Weerts This Letter reports a measurement of the WW production cross section in √ s = 7 TeV pp collisions using data corresponding to an integrated luminosity of 1.02 fb−1 collected with the ATLAS detector. Using leptonic decays of oppositely charged W bosons, the total measured cross section is σ(pp → WW ) = 54.4± 4.0 (stat.)± 3.9 (syst.)± 2.0 (lumi.) pb, consistent with the Standard Model prediction of σ(pp → WW )= 44.4± 2.8 pb. Limits on anomalous electroweak triple-gauge couplings are extracted from a fit to the transverse-momentum distribution of the leading charged lepton in the event. © 2012 CERN. Published by Elsevier B.V. All rights reserved.

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تاریخ انتشار 2012