10.18453/rosdok_id00001527 Leddig, Torsten Torsten Leddig http://d-nb.info/gnd/1030023654 Universität Rostock 2015 530 Physics 2015 en http://purl.uni-rostock.de/rosdok/id00001527 urn:nbn:de:gbv:28-diss2015-0077-0 The subject of the present work is the search for the semileptonic decay B- -> Lambda_c+ pbar l nubar. A measurement of this decay would allow us to quantize the underlying process and thus to improve our understanding of the mechanisms of baryonic B-meson decays in general. Predictions based on the measurement of other baryonic B-meson decays pointed to a branching fraction of the order 5*10^{-4}. These predictions could not be confirmed with the present work. Instead an upper limit of 1*10^{-4} for the branching fraction could be established.