John M. Campbell
Top tree amplitudes for higher order calculations
Campbell, John M.; Ellis, R. Keith
Abstract
We present compact analytic results for tree-level amplitudes containing a tt¯ pair accompanied by up to four massless partons, tt¯gg, tt¯ggg, tt¯gggg, tt¯qq¯, tt¯qq¯g, tt¯qq¯gg and tt¯qq¯q′q¯′. The results, obtained using BCFW on-shell recursion, are based both on previous published results and on the new calculations performed in this paper. These amplitudes are sufficient to calculate the production of a tt¯ pair and zero, one, or two light parton jets, with the option to include the tree-level decays t → bνe+ and t¯ → b¯e−ν¯ efficiently. Our results are part of the NNLO corrections to tt¯ production including the decay correlations for on-shell top quarks.
Citation
Campbell, J. M., & Ellis, R. K. (2023). Top tree amplitudes for higher order calculations. Journal of High Energy Physics, 2023(10), Article 125. https://doi.org/10.1007/jhep10%282023%29125
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 13, 2023 |
Online Publication Date | Oct 20, 2023 |
Publication Date | Oct 20, 2023 |
Deposit Date | Jan 8, 2024 |
Publicly Available Date | Jan 8, 2024 |
Journal | Journal of High Energy Physics |
Print ISSN | 1126-6708 |
Electronic ISSN | 1029-8479 |
Publisher | Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Peer Reviewed | Peer Reviewed |
Volume | 2023 |
Issue | 10 |
Article Number | 125 |
DOI | https://doi.org/10.1007/jhep10%282023%29125 |
Keywords | Higher-Order Perturbative Calculations, Top Quark, Scattering Amplitudes |
Public URL | https://durham-repository.worktribe.com/output/2116566 |
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Copyright Statement
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.
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