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


Document Type : AL
Record Number : 901397
Doc. No : LA69d164r0
Title & Author : Measurement of the single top quark and antiquark production cross sections in the t channel and their ratio in proton-proton collisions at s=13TeV [Article]\ Sirunyan, AMTumasyan, AAdam, WAmbrogi, FAsilar, EBergauer, TBrandstetter, JDragicevic, MErö, JEscalante Del Valle, AFlechl, MFrühwirth, RGhete, VMHrubec, JJeitler, MKrammer, NKrätschmer, ILiko, DMadlener, TMikulec, IRad, NRohringer, HSchieck, JSchöfbeck, RSpanring, MSpitzbart, Det al.
Date : 2020
Title of Periodical : Lawrence Berkeley National Laboratory
Abstract : © 2019 The Author(s) 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.
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69d164r0_445894.pdf
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