Evidence for electroweak production of two jets in association with a Zγ pair in pp collisions at √s = 13 TeV with the ATLAS detector

Aad, Georges; Abbott, Brad; Abbott, Dale C.; Abed Abud, Adam; Abeling, Kira; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; AbouZeid, Hass; Abraham, Nadine L.; Abramowicz, Halina; Bjørke, Kristian; Bugge, Magnar Kopangen; Cameron, David Gordon; Catmore, James Richard; Garonne, Vincent; Gramstad, Eirik; Hellesund, Simen; Morisbak, Vanja; Oppen, Henrik; Ould-Saada, Farid; Pedersen, Maiken; Read, Alexander Lincoln; Rye, Eli Bæverfjord; Røhne, Ole Myren; Sandaker, Heidi; Vadla, Knut Oddvar Høie; Buanes, Trygve; Djuvsland, Julia Isabell; Eigen, Gerald; Fomin, Nikolai; Lee, Graham Richard; Lipniacka, Anna; Martin dit Latour, Bertrand; Stugu, Bjarne; Træet, Are Sivertsen; Abreu, Henso; Abulaiti, Yiming; Acharya, Bobby S.; Achkar, Baida; Adachi, Shunsuke; Adam, Lennart; Adam-Bourdarios, Claire; Adamczyk, Leszek; Adamek, Lukas; Adelman, Jareed; Adersberger, Michael; Adigüzel, Aytül; Adorni, Sofia; Adye, Tim; Affolder, Anthony Allen; ATLAS, Collaboration
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URI
https://hdl.handle.net/11250/2754716
Date
2020-04-10
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Original version
Nuclear Physics B. 2020, 803:135341   10.1016/j.physletb.2020.135341
Abstract
Evidence for electroweak production of two jets in association with a Zγ pair in √s = 13 TeV proton–

proton collisions at the Large Hadron Collider is presented. The analysis uses data collected by the

ATLAS detector in 2015 and 2016 that corresponds to an integrated luminosity of 36.1 fb−1. Events

that contain a Z boson candidate decaying leptonically into either e+e− or μ+μ−, a photon, and two

jets are selected. The electroweak component is measured with observed and expected significances

of 4.1 standard deviations. The fiducial cross-section for electroweak production is measured to be

σZγ jj−EW = 7.8 ± 2.0 fb, in good agreement with the Standard Model prediction.
Publisher
Elsevier
Journal
Nuclear Physics B
Copyright
Copyright 2020 The Author(s)
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