Higher-order corrections to top-quark pair production in the SMEFT
High Energy Physics - Phenomenology
2024-10-01 v1
Abstract
We present theoretical results at approximate NNLO in QCD for top-quark pair-production total cross sections and top-quark differential distributions at the LHC in the SMEFT. In this work we consider effects of new physics parametrized by the chromomagnetic dipole operator. These approximate results are obtained by adding higher-order soft gluon corrections to the complete NLO calculations. The higher-order corrections are large, and they reduce the scale uncertainties. These improved theoretical predictions can be used to set stronger bounds on top-quark QCD anomalous couplings.
Keywords
Cite
@article{arxiv.2409.19470,
title = {Higher-order corrections to top-quark pair production in the SMEFT},
author = {Alberto Tonero and Nikolaos Kidonakis},
journal= {arXiv preprint arXiv:2409.19470},
year = {2024}
}
Comments
6 pages, 2 figures; in proceedings of the 42nd International Conference on High Energy Physics (ICHEP2024), 18-24 July 2024, Prague, Czech Republic