Off-shell ttj Production and Top-quark Mass Studies at the LHC

Bevilacqua, G.; Hartanto, H.B.; Kraus, M.; Schulze, M.; Worek, M.

doi:10.5506/aphyspolb.48.2251

Off-shell ttj Production and Top-quark Mass Studies at the LHC

Bevilacqua, G.; Hartanto, H.B.; Kraus, M.; Schulze, M.; Worek, M.

Authors

G. Bevilacqua

H.B. Hartanto

M. Kraus

M. Schulze

M. Worek

Abstract

Precision studies of the properties of the top quark represent a cornerstone of the LHC physics program. In this contribution, we focus on the production of tt pairs in association with one hard jet and, in particular, on its connection with precision measurements of the top-quark mass at the LHC. We report a summary of a full calculation of the process pp → e+νeμ−νμbbj at NLO QCD accuracy, which describes ttj production with leptonic decays beyond the Narrow Width Approximation (NWA), and discuss the impact of the off-shell effects through comparisons with NWA. Finally, we explore the sensitivity of ttj in the context of top-quark mass extraction with the template method, considering two benchmark observables as the case studies.

Citation

Bevilacqua, G., Hartanto, H., Kraus, M., Schulze, M., & Worek, M. (2017). Off-shell ttj Production and Top-quark Mass Studies at the LHC. Acta Physica Polonica B, 48(12), 2251-2260. https://doi.org/10.5506/aphyspolb.48.2251

Journal Article Type	Article
Acceptance Date	Nov 6, 2017
Online Publication Date	Dec 1, 2017
Publication Date	Dec 1, 2017
Deposit Date	Feb 9, 2018
Publicly Available Date	Feb 9, 2018
Journal	Acta Physica Polonica B
Print ISSN	0587-4254
Electronic ISSN	1509-5770
Publisher	Jagiellonian University
Peer Reviewed	Peer Reviewed
Volume	48
Issue	12
Pages	2251-2260
DOI	https://doi.org/10.5506/aphyspolb.48.2251