Higher-order QCD corrections to top-quark pair production in association with a jet
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866918205304340480 |
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| author | Badger, Simon Becchetti, Matteo Brancaccio, Colomba Czakon, Michal Hartanto, Heribertus Bayu Poncelet, Rene Zoia, Simone |
| author_facet | Badger, Simon Becchetti, Matteo Brancaccio, Colomba Czakon, Michal Hartanto, Heribertus Bayu Poncelet, Rene Zoia, Simone |
| contents | The production of a top-quark pair, the heaviest known elementary particle, in association with a light jet is a key process for studying the properties of the Standard Model of Particle Physics. Due to its significance as a signal process with considerable sensitivity to the top-quark mass and as a background process for new physics searches, it is crucial to predict differential cross sections with high precision. In this article, we present, for the first time, predictions for various kinematical observables at next-to-next-to-leading order in Quantum Chromodynamics. The perturbative behavior is analyzed, and uncertainties arising from missing higher-order contributions are substantially reduced. The necessary two-loop amplitudes have been evaluated in the leading-color approximation, and we provide estimates for the impact of the missing contributions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_11431 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Higher-order QCD corrections to top-quark pair production in association with a jet Badger, Simon Becchetti, Matteo Brancaccio, Colomba Czakon, Michal Hartanto, Heribertus Bayu Poncelet, Rene Zoia, Simone High Energy Physics - Phenomenology High Energy Physics - Experiment The production of a top-quark pair, the heaviest known elementary particle, in association with a light jet is a key process for studying the properties of the Standard Model of Particle Physics. Due to its significance as a signal process with considerable sensitivity to the top-quark mass and as a background process for new physics searches, it is crucial to predict differential cross sections with high precision. In this article, we present, for the first time, predictions for various kinematical observables at next-to-next-to-leading order in Quantum Chromodynamics. The perturbative behavior is analyzed, and uncertainties arising from missing higher-order contributions are substantially reduced. The necessary two-loop amplitudes have been evaluated in the leading-color approximation, and we provide estimates for the impact of the missing contributions. |
| title | Higher-order QCD corrections to top-quark pair production in association with a jet |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2511.11431 |