Aaboud, M.Aad, G.Abbott, B.Abbott, D.C.Abdinov, O.Abeloos, B.Abhayasinghe, D.K.Abidi, S.H.AbouZeid, O.S.Abraham, N.L.Albert, JustinAnelli, Christopher R.Chiu, Y.H.Ghasemi Bostanabad, M.Hamano, KenjiHill, Ewan ChinKeeler, RichardKowalewski, RobertLefebvre, MichelMcLean, K.D.et al.2021-01-262021-01-2620202020Aaboud, M., Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abeloos, B., … Zwalinski, L. (2020). Measurement of J/ψ production in association with a W± boson with pp data at 8 TeV. Journal of High Energy Physics, 2020(1). https://doi.org/10.1007/JHEP01(2020)095https://doi.org/10.1007/JHEP01(2020)095http://hdl.handle.net/1828/12598A measurement of the production of a prompt J/ψ meson in association with a W± boson with W± → μν and J/ψ → μ+μ− is presented for J/ψ transverse momenta in the range 8.5–150 GeV and rapidity |yJ/ψ| < 2.1 using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of s√ = 8 TeV and correspond to an integrated luminosity of 20.3 fb−1. The ratio of the prompt J/ψ plus W± cross-section to the inclusive W± cross-section is presented as a differential measurement as a function of J/ψ transverse momenta and compared with theoretical predictions using different double-parton-scattering cross-sections.enHadron-Hadron scattering (experiments)Article