Measurement of the Single Top Quark and Antiquark Production Cross Sections in the t Channel and Their Ratio in Proton-Proton Collisions at √s = 13 TeV

Physics Letters B 2020
Viesturs Veckalns

Measurements 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.

Keywords
CMS | Cross section | Physics | Single top | Top quark
DOI
10.1016/j.physletb.2019.135042
Hyperlink
https://www.sciencedirect.com/science/article/pii/S0370269319307646?via%3Dihub

Veckalns, V., CERN international group of authors. Measurement of the Single Top Quark and Antiquark Production Cross Sections in the t Channel and Their Ratio in Proton-Proton Collisions at √s = 13 TeV. Physics Letters B, 2020, Vol. 800, Article number 135042. ISSN 0370-2693. Available from: doi:10.1016/j.physletb.2019.135042

Publication language
English (en)