Measurement of the single top quark and antiquark production cross sections in the tchannel and their ratio in proton-proton collisions at √s=13 TeV

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Type :
Article
Publication Status :
Published
Access :
openAccess
Abstract
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.
Source :
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Date :
2020-01-10
Volume :
800
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/7262https://www.sciencedirect.com/science/article/pii/S0370269319307646
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