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

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The CMS Collaboration , Eerola , P , Kirschenmann , H , Pekkanen , J , Voutilainen , M , Havukainen , J , Heikkila , J K , Jarvinen , T , Kinnunen , R , Lampen , T , Lassila-Perini , K , Laurila , S , Lehti , S , Linden , T , Luukka , P , Maenpaa , T , Siikonen , H , Tuominen , E , Tuominiemi , J , Sirunyan , A M , Tumasyan , A , Tuuva , T & Karimäki , V 2020 , ' Measurement of the single top quark and antiquark production cross sections in the t channel and their ratio in proton-proton collisions at root s=13 TeV ' , Physics Letters B , vol. 800 , 135042 . https://doi.org/10.1016/j.physletb.2019.135042

Title: Measurement of the single top quark and antiquark production cross sections in the t channel and their ratio in proton-proton collisions at root s=13 TeV
Author: The CMS collaboration; Eerola, P.; Kirschenmann, H.; Pekkanen, J.; Voutilainen, M.; Havukainen, J.; Heikkila, J. K.; Jarvinen, T.; Kinnunen, R.; Lampen, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Linden, T.; Luukka, P.; Maenpaa, T.; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Sirunyan, A. M.; Tumasyan, A.; Tuuva, T.; Karimäki, V.
Contributor organization: Department of Physics
Helsinki Institute of Physics
Eija Tuominen / Principal Investigator
Date: 2020-01-10
Language: eng
Number of pages: 30
Belongs to series: Physics Letters B
ISSN: 0370-2693
DOI: https://doi.org/10.1016/j.physletb.2019.135042
URI: http://hdl.handle.net/10138/314383
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. (C) 2019 The Author(s). Published by Elsevier B.V.
Subject: 114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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