First measurement of the top quark pair production cross section in proton-proton collisions at $ \sqrt{s} $ = 13.6 TeV
(2023) Journal of High Energy Physics — Vol. 08 (2023)
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- The first measurement of the top quark pair ($ \textrm{t}\overline{\textrm{t}} $) production cross section in proton-proton collisions at $ \sqrt{s} $ = 13.6 TeV is presented. Data marc:recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding to an integrated luminosity of 1.21 fb$^{−1}$, are analyzed. Events are selected with one or two charged leptons (electrons or muons) and additional jets. A maximum likelihood fit is performed in event categories defined by the number and flavors of the leptons, the number of jets, and the number of jets identified as originating from b quarks. An inclusive $ \textrm{t}\overline{\textrm{t}} $ production cross section of 881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard model prediction of $ {924}_{-40}^{+32} $ pb.[graphic not available: see fulltext]
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Benecke, A., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Donertas, I. S., Giammanco, A., Jaffel, K., Jain, S., Jain, S., Lemaitre, V., Lidrych, J., Mondal, K., Tran, T. T., Vischia, P., Wertz, S., CMS, Bethani, A., & et al. (2023). First measurement of the top quark pair production cross section in proton-proton collisions at $ \sqrt{s} $ = 13.6 TeV. Journal of High Energy Physics, 08. https://doi.org/10.1007/JHEP08(2023)204 (Original work published 2023)