Bestimmung der Masse des Top-Quarks anhand der Zerfallslängen von B-Hadronen im CMS-Experiment

This diploma thesis investigates an alternative method of mass determination of top quarks: The decay lengths of B hadrons correlates with the top quark mass. After checking the principle of this investigation in a generator-only study, the method is investigated using full detector simulation data. Cuts to identify dileptonic top quark events are described and applied, b-jets are closely studied and also taken into account in the signal selection. The correlation of the top quark mass and the decay length is determined. Uncertainties of this investigation are estimated and a scenario for their decreases in the future is given.