Yetkin, Elif Aslı2020-12-162020-12-162017-09-10https://hdl.handle.net/11411/2871https://doi.org/10.1016/j.physletb.2017.07.047The cross section for the production of single top quarks in the t channel is measured in proton- proton collisions at 13TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.2fb(-1). The event selection requires one muon and two jets where one of the jets is identified as originating from a bottom quark. Several kinematic variables are then combined into a multivariate discriminator to distinguish signal from background events. A fit to the distribution of the discriminating variable yields a total cross section of 238 +/- 13 (stat)+/- 29(syst) pband a ratio of top quark and top antiquark production of Rt-ch.= 1.81 +/- 0.18 (stat)+/- 0.15(syst). From the total cross section the absolute value of the CKM matrix element Vtbis calculated to be 1.05 +/- 0.07 (exp)+/- 0.02(theo). All results are in agreement with the standard model predictions.eninfo:eu-repo/semantics/openAccessCMSPhysicsTop quarkArticle10.1016/j.physletb.2017.07.047Q1Q1WOS:000411369700108