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

Abstract

This Letter reports a measurement of the WW production cross section in sqrt(s) = 7 TeV pp collisions using data corresponding to an integrated luminosity of 1.02/fb collected with the ATLAS detector. Using leptonic decays of oppositely charged W bosons, the total measured cross section is sigma(pp -> WW) = 54.4 +/- 4.0 (stat.) +/- 3.9 (syst.) +/- 2.0 (lumi.) pb, consistent with the Standard Model prediction of sigma(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.

arXiv comment11 pages plus author list (25 pages total), 5 figures, 5 tables, revised author list, final version to appear in Physics Letters B

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• Search for chargino--neutralino pair production in final states with three leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Measurement of the W+W- cross section in pp collisions at sqrt(s) = 7 TeV and limits on anomalous WW gamma and WWZ couplings
• Measurement of the W+ W- cross section in pp collisions at sqrt(s) = 8 TeV and limits on anomalous gauge couplings
• Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in $\sqrt{s}$ = 13 TeV $pp$ collisions with the ATLAS detector
• Measurement of the sum of WW and WZ production with W+dijet events in pp collisions at sqrt(s) = 7 TeV
• Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Multi-Boson Interactions at the LHC
• Measurement of the top quark pair production cross section in proton-proton collisions at sqrt(s) = 13 TeV
• Measurement of the t t-bar production cross section using events in the e mu final state in pp collisions at sqrt(s) = 13 TeV
• Prospects for Triple Gauge Coupling Measurements at Future Lepton Colliders and the 14 TeV LHC
• Limits on anomalous trilinear gauge boson couplings from WW, WZ and Wgamma production in pp-bar collisions at sqrt{s}=1.96 TeV
• Search for anomalous quartic WWγγ couplings in dielectron and missing energy final states in ppbar collisions at sqrt(s) = 1.96 TeV
• Search for anomalous triple gauge couplings in WW and WZ production in lepton + jet events in proton-proton collisions at $\sqrt{s}=$ 13 TeV
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• WW production at high transverse momenta beyond NLO
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• Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model
• The vector resonance triplet with the direct coupling to the third quark generation
• Standard Model Higgs Boson Searches through the 125 GeV Boson Discovery
• $k_t$-factorization vs collinear factorization in $W^{+}{W}^{-}$ pair production at the LHC
• Probing New Physics via pp-> W+W- -> lvjj at the CERN LHC
• Search for cascade decays of charged sleptons and sneutrinos in final states with three leptons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Electroweak Measurements with the ATLAS and CMS Experiments