Abstract

We calculate a comprehensive set of spin correlations and differential distributions in top-quark pair production and decay to dilepton final states. Our calculation is performed in the Narrow Width Approximation. This is the first time such a complete study is performed at next-to-next-to leading order in QCD. Both inclusive and fiducial distributions are presented and analyzed. Good agreement between NNLO QCD predictions and data is found. We demonstrate that it is possible to perform high-precision comparisons of fixed-order calculations with fiducial-level data. Subtleties of the top quark definition are raised and clarified. Some of those are found to have a very significant impact on top-quark pair production at absolute threshold.

Details

Title
NNLO QCD corrections to leptonic observables in top-quark pair production and decay
Author
Czakon Michał 1 ; Mitov, Alexander 2 ; Poncelet, Rene 2   VIAFID ORCID Logo 

1  RWTH Aachen University, Institut für Theoretische Teilchenphysik und Kosmologie, Aachen, Germany (GRID:grid.1957.a) (ISNI:0000 0001 0728 696X) 
2  University of Cambridge, Cavendish Laboratory, Cambridge, U.K. (GRID:grid.5335.0) (ISNI:0000000121885934) 
Publication year
2021
Publication date
May 2021
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1007/JHEP05(2021)212
ProQuest document ID
2531845428
Copyright
© The Author(s) 2021. This work is published under CC-BY 4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.