First measurement of the top quark pair production cross section at √(s) = 13.6 TeV at the CMS experiment

2022/11/30 by Jeppe, Laurids
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2301.09414

Abstract

We present the first measurement of the top quark pair production cross section at the new LHC center-of-mass energy of √(s) = 13.6 TeV, using 1.20 fb^-1 of data recorded at the CMS detector. We use a new method combining dilepton and lepton+jets decay channels, constraining several experimental uncertainties in situ. A cross section of 887⁺⁴³_-41(stat+syst) ± 53 (lumi) pb is measured, in agreement with the standard model. This result constitutes a first validation of the new data taken by CMS in LHC Run 3.

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