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Measurement of W+W- production in pp collisions at √s=7  TeV with the ATLAS detector and limits on anomalous WWZ and WWγ couplings

Research output: Contribution to journalJournal article

Published

Article number112001
Journal publication date3/06/2013
JournalPhysical Review D
Journal number11
Volume87
Number of pages29
Original languageEnglish

Abstract

This paper presents a measurement of the W+W- production cross section in pp collisions at √s=7  TeV. The leptonic decay channels are analyzed using data corresponding to an integrated luminosity of 4.6  fb-1 collected with the ATLAS detector at the Large Hadron Collider. The W+W- production cross section σ(pp→W+W-+X) is measured to be 51.9±2.0(stat)±3.9(syst)±2.0(lumi)  pb, compatible with the Standard Model prediction of 44.7-1.9+2.1  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 WWγ couplings.

Bibliographic note

Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2013 CERN, for the ATLAS Collaboration