Çetin, Serkant Ali2020-12-282020-12-282019-06-101873-24450370-2693https://hdl.handle.net/11411/3014https://doi.org/10.1016/j.physletb.2019.05.012An observation of electroweak W(+/-)Z production in association with two jets in proton-proton collisions is presented. The data collected by the ATLAS detector at the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of root s = 13 TeV are used, corresponding to an integrated luminosity of 36.1 fb(-1). Events containing three identified leptons, either electrons or muons, and two jets are selected. The electroweak production of W(+/-)Z bosons in association with two jets is measured with an observed significance of 5.3 standard deviations. A fiducial cross-section for electroweak production including interference effects and for a single leptonic decay mode is measured to be sigma(WZjj-EW) = 0.57(-0.13)(+0.14) (stat.) (+0.07)(-0.06) (syst.) fb. Total and differential fiducial cross-sections of the sum of W(+/-)Zjj electroweak and strong productions for several kinematic observables are also measured. (C) 2019 The Author(s). Published by Elsevier B.V.eninfo:eu-repo/semantics/openAccessPROTON-PROTON COLLISIONSCROSS-SECTIONCONSTRAINTSCOUPLINGSArticle2-s2.0-8506581448210.1016/j.physletb.2019.05.012Q1WOS:000470064800070