Sirunyan, A. M.Işıldak, Bora2021-02-022021-02-022020-01-100370-2693http://hdl.handle.net/10679/7262https://doi.org/10.1016/j.physletb.2019.135042Measurements of the cross sections for the production of single top quarks and antiquarks in the t channel, and their ratio, are presented for proton-proton collisions at a center-of-mass energy of 13 TeV. The data set used was recorded in 2016 by the CMS detector at the LHC and corresponds to an integrated luminosity of 35.9 fb(-1). Events with one muon or electron are selected, and different categories of jet and b jet multiplicity and multivariate discriminators are applied to separate the signal from the background. The cross sections for the t-channel production of single top quarks and antiquarks are measured to be 130 +/- 1(stat) +/- 19(syst) pb and 77 +/- 1(stat) +/- 12(syst) pb, respectively, and their ratio is 1.68 +/- 0.02(stat) +/- 0.05(syst). The results are in agreement with the predictions from the standard model.enginfo:eu-repo/semantics/openAccessArticle80000050383250003210.1016/j.physletb.2019.135042CMSPhysicsTop quarkSingle topCross section2-s2.0-85074905420