{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.156818.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2923238"}},{"@id":"https://doi.org/10.1007/JHEP08(2025)142","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2025","description":"Measurements of  $W^+W^-\\rightarrow e^\\pm \\nu \\mu^\\mp \\nu$ production cross-sections are presented, providing a test of the predictions of perturbative quantum chromodynamics and the electroweak theory. The measurements are based on data from $pp$ collisions at $\\sqrt{s}=13$ TeV recorded by the ATLAS detector at the Large Hadron Collider in 2015--2018, corresponding to an integrated luminosity of 140 fb$^{-1}$. The number of events due to top-quark pair production, the largest background, is reduced by rejecting events containing jets with $b$-hadron decays.  An improved methodology for estimating the remaining top-quark background enables a precise measurement of $W^+W^-$ cross-sections with no additional requirements on jets. The fiducial  $W^+W^-$ cross-section is determined in a maximum-likelihood fit with an uncertainty of 3.1%. The measurement is extrapolated to the full phase space, resulting in a total $W^+W^-$ cross-section of $127\\pm4$ pb. Differential cross-sections are measured as a function of twelve observables that comprehensively describe the kinematics of $W^+W^-$ events. The measurements are compared with state-of-the-art theory calculations and excellent agreement with predictions is observed. A charge asymmetry in the lepton rapidity is observed as a function of the dilepton invariant mass, in agreement with the Standard Model expectation. A CP-odd observable is measured to be consistent with no CP violation. Limits on Standard Model effective field theory Wilson coefficients in the Warsaw basis are obtained from the differential cross-sections.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.156818.v1/t1","@type":"Dataset","description":"Measured fiducial cross-section compared with theoretical predictions from MiNNLO+Pythia8, Geneva+Pythia8, Sherpa2.2.12, and MATRIX2.1. The predictions are based on the NNPDF3.0...","name":"Meas. 1: Fiducial cross section"},{"@id":"https://doi.org/10.17182/hepdata.156818.v1/t2","@type":"Dataset","description":"Fiducial differential cross-sections as a function of $p_{\\mathrm{T}}^{\\mathrm{lead.\\,lep.}}$. 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