Measurement of $W^_s16W^-$ production in $pp$ collisions at $sqrts=7$ TeV with the ATLAS detector and limits on anomalous $WWZ$ and $WWgamma$ couplings

Abstract

This paper presents a measurement of the W^_s16W^- production cross section in pp collisions at sqrt{s}=7 TeV. The leptonic decay channels are analyzed using data corresponding to an integrated 4.6 fb-1 collected with the ATLAS detector at the Large Hadron Collider. The W^_s16W^- production cross section sigma(pp -> W^_s16W^-_s16X) is measured to be 51.9 _s16- 2.0 (stat) _s16- 3.9 (syst) _s16- 2.0 (lumi) pb, compatible with the Standard Model prediction of 44.7 _s162.1 -1.9 pb. A measurement of the normalized fiducial cross section as a function of the leading lepton transverse momentum is also presented. The reconstructed transverse momentum distribution of the leading lepton is used to extract limits on anomalous WWZ and WWgamma couplings.