The cross section for the production of single top quarks in the tchannel is measured in proton–proton collisions at 13TeVwith 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.
Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., ... & Friedl, M. (2017). Cross section measurement of t-channel single top quark production in pp collisions at s= 13TeV. Physics letters B, 772, 752-776.
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please
share your stories
about how Open Access to this item benefits YOU.
The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.