We study the impact of different theoretical descriptions of top quark pair production on top quark mass measurements in the di-lepton channel. To this aim, the full NLO corrections to pp→W+W−bbˉ→(e+νe)(μ−νˉμ)bbˉ production are compared to calculations in the narrow width approximation, where the production of a top quark pair is calculated at NLO and combined with three different descriptions of the top quark decay: leading order, next-to-leading order and via a parton shower. The different theory predictions then enter the calibration of template fit functions, which are used for a fit to pseudo-data. The offsets in the top quark mass resulting from the fits based on the various theoretical descriptions are determined.
@article{arxiv.1709.08615,
title = {NLO and off-shell effects in top quark mass determinations},
author = {G. Heinrich and A. Maier and R. Nisius and J. Schlenk and M. Schulze and L. Scyboz and J. Winter},
journal= {arXiv preprint arXiv:1709.08615},
year = {2018}
}
Comments
39 pages, 25 figures, v3: version published in JHEP