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. 2021 Apr 30;81(4):378. doi: 10.1140/epjc/s10052-021-09014-x

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© CERN for the benefit of the CMS collaboration 2021, corrected publication 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 7 — Distributions of $m_{e e}$ for (left) SS and (right) OS electron pairs in $Z / γ^{*} \to e e$ candidate events in which both electrons are in the ECAL barrel and have transverse momenta within the range $25 < p_{T} < 50 GeV$ , for data recorded in 2018, compared to the expectation. Uncertainties shown are statistical only. A similar level of agreement is present in all the other momentum ranges and data-taking periods