Top-pair production at the LHC through NNLO QCD and NLO EW
By Michal Czakon, D. Heymes, Alexander Mitov, D. Pagani, I. Tsinikos, M. Zaro. 2017
240 citations recorded by the source corpus.
A bstractIn this work we present for the first time predictions for top-quark pair differential distributions at the LHC at NNLO QCD accuracy and including EW corrections. For the latter we include not only contributions of Oαs2α$$ \mathcal{O}\left({\alpha}_s^2\alpha \right) $$, but also those of order Oαsα2$$ \mathcal{O}\left({\alpha}_s{\alpha}^2\right) $$ and Oα3$$ \mathcal{O}\left({\alpha}^3\right) $$. Besides providing phenomenological predictions for all main differential distributions with stable top quarks, we also study the following issues. 1) The effect of the photon PDF on top-pair spectra: we find it to be strongly dependent on the PDF set used — especially for the top pT distribution. 2) The difference between the additive and multiplicative approaches for combining QCD and EW corrections: with our scale choice, we find relatively small differences between the central predictions, but reduced scale dependence within the multiplicative approach. 3) The potential effect from the radiation of heavy bosons on inclusive top-pair spectra: we find it to be, typically, negligible.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/1926623e82200f06c48bd99c8412380d0397bddb
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Nuclear and High Energy Physics
- Atlas Collaboration
- Cms Collaboration
- Gudrun Heinrich
- M. Schönherr
- Ansgar Denner
- Fabio Maltoni
- S. Höche
- A. Larkoski
Citations in the corpus
- O new physics, where art thou? A global search in the top sector (2019, background): “Regarding higher-order corrections, our estimate based on the NLO scale dependence in the presence of dimension-6 effects is likely to be conservative for small new physics effects [105].”
- Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, methodology): “The framework was also instrumental in combining NNLO QCD and NLO EW corrections to tt̄ [329,507] production at both the LHC collision energies and 100 TeV.”
- A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector (2019, background): “These measurements are not considered here since their analysis requires jet substructure information alongside the consistent inclusion of electroweak [135] and threshold resummation [136] corrections.”
- Large NLO corrections in tt¯ W ± and tt¯ tt¯ hadroproduction from supposedly subleading EW contributions (2018, background): “[19, 25] for the calculation of the complete-NLO corrections.”