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Cross section measurement of t-channel single top quark production in pp collisions at root s=13 TeV

By A. M. Sirunyan, A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, Güler Karapınar and CMS Collaboration

Abstract

WOS: 000411369700108The 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. (C) 2017 The Author(s). Published by Elsevier B.V

Topics: CMS, Physics, Top quark
Publisher: 'Elsevier BV'
Year: 2017
DOI identifier: 10.1016/j.physletb.2017.07.047
OAI identifier: oai:openaccess.iyte.edu.tr:11147/8744
Provided by: DSpace@IZTECH
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