Abstract
This article presents measurements of the -channel single top-quark () and top-antiquark () total production cross sections and , their ratio , and a measurement of the inclusive production cross section in proton-proton collisions at at the LHC. Differential cross sections for the and processes are measured as a function of the transverse momentum and the absolute value of the rapidity of and , respectively. The analyzed data set was recorded with the ATLAS detector and corresponds to an integrated luminosity of . Selected events contain one charged lepton, large missing transverse momentum, and two or three jets. The cross sections are measured by performing a binned maximum-likelihood fit to the output distributions of neural networks. The resulting measurements are , , , and , consistent with the Standard Model expectation. The uncertainty on the measured cross sections is dominated by systematic uncertainties, while the uncertainty on is mainly statistical. Using the ratio of to its theoretical prediction, and assuming that the top-quark-related CKM matrix elements obey the relation , we determine .
11 More- Received 30 June 2014
DOI:https://doi.org/10.1103/PhysRevD.90.112006
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© 2014 CERN, for the ATLAS Collaboration