NLO and off-shell effects in top quark mass determinations

Heinrich, Gudrun; Maier, Andreas; Nisius, Richard; Schlenk, Johannes; Schulze, Markus; Scyboz, Ludovic; Winter, Jan

doi:10.1007/jhep07(2018)129

NLO and off-shell effects in top quark mass determinations

Heinrich, Gudrun; Maier, Andreas; Nisius, Richard; Schlenk, Johannes; Schulze, Markus; Scyboz, Ludovic; Winter, Jan

Authors

Gudrun Heinrich

Andreas Maier

Richard Nisius

Johannes Schlenk

Markus Schulze

Ludovic Scyboz

Jan Winter

Abstract

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−bb¯¯→(e+νe)(μ−ν¯¯¯μ)bb¯¯ 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.

Citation

Heinrich, G., Maier, A., Nisius, R., Schlenk, J., Schulze, M., Scyboz, L., & Winter, J. (2018). NLO and off-shell effects in top quark mass determinations. Journal of High Energy Physics, 2018(7), Article 129. https://doi.org/10.1007/jhep07%282018%29129

Journal Article Type	Article
Acceptance Date	Jul 16, 2018
Online Publication Date	Jul 19, 2018
Publication Date	Jul 19, 2018
Deposit Date	Aug 2, 2018
Publicly Available Date	Aug 2, 2018
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2018
Issue	7
Article Number	129
DOI	https://doi.org/10.1007/jhep07%282018%29129

Files

Published Journal Article (1.2 Mb)
PDF

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
© The Authors.
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.