Aad, G.Abbott, B.Abbott, D. C.Abed Abud, A.Abeling, K.Abhayasinghe, D. K.Çetin, Serkant Ali2024-07-182024-07-1820211029-8479https://doi.org/10.1007/JHEP06(2021)003https://hdl.handle.net/11411/7055Fiducial and differential cross-section measurements of W+W- production in association with at least one hadronic jet are presented. These measurements are sensitive to the properties of electroweak-boson self-interactions and provide a test of perturbative quantum chromodynamics and the electroweak theory. The analysis is performed using proton-proton collision data collected at s = 13 TeV with the ATLAS experiment, corresponding to an integrated luminosity of 139 fb(-1). Events are selected with exactly one oppositely charged electron-muon pair and at least one hadronic jet with a transverse momentum of p(T)> 30 GeV and a pseudorapidity of |eta| < 4.5. After subtracting the background contributions and correcting for detector effects, the jet-inclusive W+W-+ >= 1 jet fiducial cross-section and W+W-+ jets differential cross-sections with respect to several kinematic variables are measured. These measurements include leptonic quantities, such as the lepton transverse momenta and the transverse mass of the W+W- system, as well as jet-related observables such as the leading jet transverse momentum and the jet multiplicity. Limits on anomalous triple-gauge-boson couplings are obtained in a phase space where interference between the Standard Model amplitude and the anomalous amplitude is enhanced.eninfo:eu-repo/semantics/openAccessHadron-Hadron Scattering (Experiments)Hadron CollidersPair ProductionZz ProductionPlus PlusDistributionsArticle2-s2.0-8510823778310.1007/JHEP06(2021)0036Q2Q1WOS:000683416500001