An observation of electroweak W±Zproduction 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 √s=13TeVare used, corresponding to an integrated luminosity of 36.1fb−1. Events containing three identified leptons, either electrons or muons, and two jets are selected. The electroweak production of W±Zbosons in association with two jets is measured with an observed significance of 5.3standard deviations. A fiducial cross-section for electroweak production including interference effects and for a single leptonic decay mode is measured to be σWZjj−EW=0.57 +0.14−0.13(stat.) +0.07−0.06(syst.) fb. Total and differential fiducial cross-sections of the sum of W±Zjjelectroweak and strong productions for several kinematic observables are also measured.
Aaboud M., A.G. (2019). Observation of electroweak W ± Z boson pair production in association with two jets in pp collisions at √s = 13 TeV with the ATLAS detector. PHYSICS LETTERS. SECTION B, 793, 469-492 [10.1016/j.physletb.2019.05.012].
Observation of electroweak W ± Z boson pair production in association with two jets in pp collisions at √s = 13 TeV with the ATLAS detector
Alberghi G. L.;Bellagamba L.;Bindi M.;Boscherini D.;Cabras G.;Caforio D.;De Castro S.;Di Sipio R.;Fabbri F.;Fabbri L.;Franchini M.;Gabrielli A.;Giacobbe B.;Lasagni Manghi F.;Macchiolo A.;Massa L.;Mengarelli A.;Monzani S.;Polini A.;Rinaldi L.;Romano M.;Sbarra C.;Sbrizzi A.;Semprini-Cesari N.;Sioli M.;Todome K.;Ucchielli G.;Valentinetti S.;Villa M.;Vittori C.;Vivarelli I.;Zoccoli A.;
2019
Abstract
An observation of electroweak W±Zproduction 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 √s=13TeVare used, corresponding to an integrated luminosity of 36.1fb−1. Events containing three identified leptons, either electrons or muons, and two jets are selected. The electroweak production of W±Zbosons in association with two jets is measured with an observed significance of 5.3standard deviations. A fiducial cross-section for electroweak production including interference effects and for a single leptonic decay mode is measured to be σWZjj−EW=0.57 +0.14−0.13(stat.) +0.07−0.06(syst.) fb. Total and differential fiducial cross-sections of the sum of W±Zjjelectroweak and strong productions for several kinematic observables are also measured.| File | Dimensione | Formato | |
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