Measurement of <i>W</i><SUP>+</SUP><i>W</i><SUP>-</SUP> production in association with one jet in proton-proton collisions at √<i>s</i>=8 TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Zeid, OS Abou, Abraham, NL, Abramowicz, H
et al (show 2845 more authors) (2016) Measurement of <i>W</i><SUP>+</SUP><i>W</i><SUP>-</SUP> production in association with one jet in proton-proton collisions at √<i>s</i>=8 TeV with the ATLAS detector. PHYSICS LETTERS B, 763. pp. 114-133.

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Abstract

The production of $W$ boson pairs in association with one jet in $pp$ collisions at $\sqrt{s} = 8$ TeV is studied using data corresponding to an integrated luminosity of 20.3 fb$^{-1}$ collected by the ATLAS detector during 2012 at the CERN Large Hadron Collider. The cross section is measured in a fiducial phase-space region defined by the presence of exactly one electron and one muon, missing transverse momentum and exactly one jet with a transverse momentum above 25 GeV and a pseudorapidity of $|\eta|<4.5$. The leptons are required to have opposite electric charge and to pass transverse momentum and pseudorapidity requirements. The fiducial cross section is found to be $\sigma^{\mathrm{fid,1\textrm{-}jet}}_{WW}=136\pm6($stat$)\pm14($syst$)\pm3($lumi$)$ fb. In combination with a previous measurement restricted to leptonic final states with no associated jets, the fiducial cross section of $WW$ production with zero or one jet is measured to be $\sigma^{\mathrm{fid,}\leq\mathrm{1\textrm{-}jet}}_{WW}=511\pm9($stat$)\pm26($syst$)\pm10($lumi$)$ fb. The ratio of fiducial cross sections in final states with one and zero jets is determined to be $0.36\pm0.05$. Finally, a total cross section extrapolated from the fiducial measurement of $WW$ production with zero or one associated jet is reported. The measurements are compared to theoretical predictions and found in good agreement.

Item Type: Article
Additional Information: 17 pages plus author list (34 pages total), 2 figures, 2 tables, final version published in PLB, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-24/
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 16 Mar 2017 11:27
Last Modified: 12 Oct 2023 05:44
DOI: 10.1016/j.physletb.2016.10.014
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3006443