Evidence of electroweak production of W±W±jj in pp collisions at s√=8 TeV with the ATLAS detector

ATLAS COLLABORATION, G. AAD, M.T. DOVA ET AL

PHYSICAL REVIEW LETTERS

AMER PHYSICAL SOC

Lugar: New York; Año: 2014

0031-9007

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.