Measurement of fiducial and differential W+W⁻ production cross-sections at \sqrts=13 TeV with the ATLAS detector

Franconi, Laura; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Weston, Thomas Daniel (2019). Measurement of fiducial and differential W+W⁻ production cross-sections at \sqrts=13 TeV with the ATLAS detector. European physical journal. C - particles and fields, 79(10) EDP Sciences 10.1140/epjc/s10052-019-7371-6

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A measurement of fiducial and differential cross-sections for W+W− production in proton–proton collisions at 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→e±νμ∓ν. 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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