Determination of the top-quark pole mass using single top-quark production cross-sections

This thesis examines the method and the applicability of an indirect top-quark mass measurement using t-channel single top-quark production cross-sections. It is argued, that the measurement strategy strongly depends on the mass dependencies of the theoretically predicted and the measured cross-sections. Experimentally obtained results for the inclusive t-channel top-quark cross-section using the ATLAS detector are detailed and it is concluded that the mass dependence of the result lies too close to the theoretical predictions, which obstructs a sufficient top-quark mass extraction. Aresearch for particular sources of the mass dependence emerging from the simulation of the fiducial phase space is carried out in the second part of this work. It is concluded that the mass dependence of the jet selection can be removed completely if the cut on the jet minimum transverse momentum in fiducial cross-section measurements can be released to a minimum of 20 GeV. However, this work shows that the accuracy of the indirect top-quark mass measurement from top-quark t-channel cross-sections will unlikely produce competitive results.