Evidence for Electroweak Production of W±W±jj in pp Collisions at √s =8 TeV with the ATLAS Detector

Atlas Collaboration

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Abstract

This Letter presents the first study of W±W±jj, same-electric-charge diboson production in association with two jets, using 20.3 fb-1 of proton-proton collision data at √s=8 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e±e±, e±μ±, and μ±μ±) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for W±W±jj production and electroweak-only W±W±jj production is observed with a significance of 4.5 and 3.6 standard deviations, respectively. The measured production cross sections are in agreement with standard model predictions. Limits at 95% confidence level are set on anomalous quartic gauge couplings.

Original languageEnglish (US)
Article number141803
JournalPhysical review letters
Volume113
Issue number14
DOIs
StatePublished - Oct 3 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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