First Measurement of the Top Quark Pair Production Cross Section in Proton-Proton Collisions at √s = 13 TeV

Journal of High Energy Physics 2023
Kārlis Dreimanis, Antra Gaile, Guntis Pikurs, Andris Potrebko, Markus Seidel, Viesturs Veckalns, CMS Collaboration

The first measurement of the top quark pair (tt‾tt) production cross section in proton-proton collisions at ss ​ = 13.6 TeV is presented. Data recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding to an integrated luminosity of 1.21 fb−1−1, 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 tt‾tt production cross section of 881 ± 23 (stat + syst) ± 20 (lumi) pb is measured, in agreement with the standard model prediction of 924−40+32924−40+32​ pb.

Keywords
Hadron-Hadron Scattering, Top Physics
DOI
10.1007/JHEP08(2023)204
Hyperlink
https://link.springer.com/article/10.1007/JHEP08(2023)204

The CMS Collaboration, A.Tumasyan, K.Dreimanis, G.Pikurs, A.Potrebko, M.Seidel, V.Veckalns ... [et al.]. First Measurement of the Top Quark Pair Production Cross Section in Proton-Proton Collisions at √s = 13 TeV. Journal of High Energy Physics, 2023, Vol. 2023, No. 8, Article number 204. e-ISSN 1029-8479. Available from: doi:10.1007/JHEP08(2023)204

Publication language
English (en)