A1 Journal article (refereed), original research

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


Open Access publication

Publication Details
Authors: Tuuva Tuure, Talvitie Joonas, Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Asilar E., Bergauer T., Brandstetter J., Brondolin E., Dragicevic M., Erö J., Flechl M., Friedl M., Frühwirth R., Ghete V.M., Hartl C., Hörmann N., Hrubec J., CMS Collaboration
Publisher: Elsevier: SCOAP3 / Elsevier
Publication year: 2017
Language: English
Related Journal or Series Information: Physics Letters B
Volume number: 772
Start page: 752
End page: 776
Number of pages: 25
ISSN: 0370-2693
eISSN: 1873-2445
JUFO-Level of this publication: 2
Open Access: Open Access publication

Abstract

The cross section for the production of single top quarks in the t channel is measured in proton–proton
collisions at 13 TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated
luminosity of 2.2 fb−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) pb and 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 Vtb is calculated to be 1.05 ± 0.07 (exp) ± 0.02 (theo). All
results are in agreement with the standard model predictions.


Last updated on 2018-19-10 at 07:55