Measurement of the t-channel single top-quark production cross section at √(s)=13 TeV with the ATLAS detector and interpretations of the measurement

2024/11/19 by Stratmann, Maren
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)

paper · doi:10.48550/arxiv.2411.12388

Abstract

The t-channel is the dominant production channel for single top-quarks at the LHC. The total cross section of this process is measured by ATLAS in proton-proton collisions at a center-of-mass energy √(s)=13 TeV. The production cross sections for single top-quarks and single top-antiquarks are measured to be σ_tq=137⁺⁸_-8 pb and σ_tq=84⁺⁶_-5 pb. For the combined cross section and the ratio of the cross sections R_t, σ_tq+tq=221⁺¹³_-13 pb and R_t=1.636^+0.036_-0.034 are obtained. As interpretations of the measurement, limits are set on the EFT operator O_Qq^3,1 and on the CKM matrix elements |V_td|, |V_ts| and |V_tb|.

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