Measurement of the W < sup > + < /sup > W < sup > - < /sup > cross section in pp collisions at √s = 7 TeV and limits on anomalous WWγ and WWZ couplings
Measurement of the W < sup > + < /sup > W < sup > - < /sup > cross section in pp collisions at √s = 7 TeV and limits on anomalous WWγ and WWZ couplings
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Date
2013-01-01
Authors
Chatrchyan, S.
Khachatryan, V.
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Erö, J.
Fabjan, C.
Friedl, M.
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Abstract
A measurement of W+W- production in pp collisions at √s = 7 TeV is presented. The data were collected with the CMS detector at the LHC, and correspond to an integrated luminosity of 4.92±0.11 fb-1. The W+W- candidates consist of two oppositely charged leptons, electrons or muons, accompanied by large missing transverse energy. The W+W- production cross section is measured to be 52.4±2.0 (stat.)±4.5 (syst.)±1.2 (lum.) pb. This measurement is consistent with the standard model prediction of 47.0±2.0 pb at next-to-leading order. Stringent limits on the WWγ and WWZ anomalous triple gauge-boson couplings are set. © 2013 CERN for the benefit of the CMS collaboration.
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European Physical Journal C. v.73(10)