Çetin, Serkant Ali2022-10-132022-10-132022-081029-8479https://hdl.handle.net/11411/4570https://doi.org/10.1007/JHEP08(2022)089Abstract: This paper presents updated Monte Carlo configurations used to model the production of single electroweak vector bosons (W, Z/??) in association with jets in proton-proton collisions for the ATLAS experiment at the Large Hadron Collider. Improvements pertaining to the electroweak input scheme, parton-shower splitting kernels and scale-setting scheme are shown for multi-jet merged configurations accurate to next-to-leading order in the strong and electroweak couplings. The computational resources required for these set-ups are assessed, and approximations are introduced resulting in a factor three reduction of the per-event CPU time without affecting the physics modelling performance. Continuous statistical enhancement techniques are introduced by ATLAS in order to populate low cross-section regions of phase space and are shown to match or exceed the generated effective luminosity. This, together with the lower per-event CPU time, results in a 50% reduction in the required computing resources compared to a legacy set-up previously used by the ATLAS collaboration. The set-ups described in this paper will be used for future ATLAS analyses and lay the foundation for the next generation of Monte Carlo predictions for single vector-boson plus jets production. [Figure not available: see fulltext.]. © 2022, The Author(s).eninfo:eu-repo/semantics/openAccessHadron-Hadron ScatteringArticle2-s2.0-8513579175810.1007/JHEP08(2022)089Q2WOS:000838675900002