CMS-PAS-SMP-14-016

CMS-PAS-SMP-14-016
Measurement of the $W^+W^-$ cross section in pp collisions at $\sqrt{s} =$ 8 TeV and limits on anomalous gauge couplings
CMS Collaboration
March 2015

Abstract: A measurement of the $\mathrm{W}^{+}\mathrm{W}^{-}$ production cross section in pp collisions at $\sqrt{s} =$ 8 TeV is presented. The data were collected with the CMS detector at the LHC, and correspond to an integrated luminosity of 19.4 fb $^{-1}$ . The $\mathrm{W}^{+}\mathrm{W}^{-}$ candidates are selected in events with two charged leptons, electrons or muons, and large missing transverse energy. The $\mathrm{W}^{+}\mathrm{W}^{-}$ cross section is measured to be 60.1 $\pm$ 0.9 (stat.) $\pm$ 3.2 (exp.) $\pm$ 3.1 (th.) $\pm$ 1.6 (lum.) pb. The $\mathrm{W}^{+}\mathrm{W}^{-}$ differential cross section is measured as a function of kinematic variables of the final-state charged leptons and compared with several predictions from perturbative QCD calculations. Limits on anomalous gauge couplings are given in the framework of dimension-six effective field theory operators.
Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; These preliminary results are superseded in this paper, EPJC 76 (2016) 401. The superseded preliminary plots can be found here.

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