Cross section measurement of t-channel single top quark production in pp collisions at √s = 13 TeV
Type :
Article
Publication Status :
Published
Access :
restrictedAccess
Abstract
The 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
Source :
Physics Letters B
Date :
2017-09-10
Volume :
772
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/5747https://www.sciencedirect.com/science/article/pii/S0370269317306032
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