PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T07 Top and Electroweak Physics
Measurement of the $\mathrm{t\overline{t}}$ cross-section and $\mathrm{t\overline{t}}$/Z cross-section ratio in pp collisions at $\sqrt{s}=13.6$ TeV with the ATLAS and CMS experiments
E. Ranken*  on behalf of the CMS and ATLAS collaborations
Full text: pdf
Pre-published on: January 20, 2024
Published on: March 21, 2024
Recent measurements of the inclusive $\mathrm{t\overline{t}}$ production cross section, $\sigma_\mathrm{t\overline{t}}$, and the ratio of $\mathrm{t\overline{t}}$ to Z boson production, $R_{\mathrm{t\overline{t}}/\mathrm{Z}}$, are presented by the CMS and ATLAS collaborations using data collected from proton-proton collisions at the new LHC operating energy of $\sqrt{s}=13.6$ TeV. These are among the first results of the ongoing LHC Run 3 data-taking period, which began in 2022, and provide a first opportunity to measure changes in key physics observables following the increase in energy. Both experiments used new techniques relative to previous measurements to obtain precise results efficiently, the methods of which are outlined and compared.
DOI: https://doi.org/10.22323/1.449.0288
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