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First measurement of the top quark pair production cross section in proton-proton collisions at √s = 13.6 TeV

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First measurement of the top quark pair production cross section in proton-proton collisions at √s = 13.6 TeV.pdf (1.51 MB)

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The first measurement of the top quark pair (t (t) over bar) production cross section in proton-proton collisions at root s = 13.6TeV 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), 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 t (t) over bar 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.

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2023-08-30

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Springer

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http://hdl.handle.net/10679/9185
 https://doi.org/10.1007/JHEP08(2023)204

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Natural and Mathematical Sciences

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