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Measurement of fiducial and differential W^+W^- production cross-sections at sqrt{s}=13 TeV with the ATLAS detector

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arxiv 1905.04242 v2 pith:ZT6EPHS2 submitted 2019-05-10 hep-ex

Measurement of fiducial and differential W^+W^- production cross-sections at sqrt{s}=13 TeV with the ATLAS detector

classification hep-ex
keywords differentialfiducialmeasurementatlascorrespondingcross-sectioncross-sectionsevents
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A measurement of fiducial and differential cross-sections for $W^+W^-$ production in proton-proton collisions at $\sqrt{s}=$13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of $36.1$ fb$^{-1}$ is presented. Events with one electron and one muon are selected, corresponding to the decay of the diboson system as $WW\rightarrow e^{\pm}\nu\mu^{\mp}\nu$. To suppress top-quark background, events containing jets with a transverse momentum exceeding 35 GeV are not included in the measurement phase space. The fiducial cross-section, six differential distributions and the cross-section as a function of the jet-veto transverse momentum threshold are measured and compared with several theoretical predictions. Constraints on anomalous electroweak gauge boson self-interactions are also presented in the framework of a dimension-six effective field theory.

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