State-of-the-art cross sections for $t\bar t H$: NNLO predictions matched with NNLL resummation and EW corrections
Roger Balsach, Alessandro Broggio, Simone Devoto, Andrea Ferroglia, Rikkert Frederix, Massimiliano Grazzini, Stefan Kallweit, Anna Kulesza, Javier Mazzitelli, Leszek Motyka, Davide Pagani, Benjamin D. Pecjak, Chiara Savoini, Tomasz Stebel, Malgorzata Worek, Marco Zaro
SciPost Phys. Comm. Rep. 10 (2025) · published 13 August 2025
Part of the Report 5 Collection in the LHC Higgs Working Group Reports Series.
- doi: 10.21468/SciPostPhysCommRep.10
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Abstract
We present new, state-of-the-art predictions for the associated production of the SM Higgs boson with top quarks, computed in accordance with the recommendations of the LHC Higgs Working Group. The NNLO QCD predictions, derived through suitable approximations of the two-loop virtual contribution, are supplemented with soft-gluon resummation up to NNLL accuracy. Two distinct resummation frameworks are employed – one based on direct QCD and the other on soft-collinear effective theory – and their features are compared in detail. These results are further combined with the complete-NLO corrections, yielding the most precise SM predictions for this process to date. The relevant sources of theoretical uncertainties are thoroughly estimated and discussed.
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Roger Balsach,
- 2 A. Broggio,
- 3 Simone Devoto,
- 4 Andrea Ferroglia,
- 5 Rikkert Frederix,
- 6 Massimiliano Grazzini,
- 6 Stefan Kallweit,
- 1 Anna Kulesza,
- 7 Javier Mazzitelli,
- 8 Leszek Motyka,
- 9 Davide Pagani,
- 10 Benjamin Pecjak,
- 11 Chiara Savoini,
- 8 Tomasz Stebel,
- 12 Malgorzata Worek,
- 13 14 Marco Zaro
- 1 Westfälische Wilhelms-Universität Münster / University of Münster [WWU]
- 2 Universität Wien / University of Vienna
- 3 Universiteit Gent / Ghent University
- 4 City University of New York [CUNY]
- 5 Lunds universitet / Lund University
- 6 Universität Zürich / University of Zurich [UZH]
- 7 Paul Scherrer Institute [PSI]
- 8 Uniwersytet Jagielloński / Jagiellonian University
- 9 INFN Sezione di Bologna / INFN Bologna [INFN Bologna]
- 10 Durham University
- 11 Technische Universität München / Technical University of Munich [TUM]
- 12 Rheinisch-Westfälische Technische Hochschule Aachen / RWTH Aachen University [RWTH]
- 13 Università degli Studi di Milano / University of Milan [UNIMI]
- 14 Istituto Nazionale di Fisica Nucleare Sezione di Milano / INFN Sezione di Milano
- Deutsche Forschungsgemeinschaft / German Research FoundationDeutsche Forschungsgemeinschaft [DFG]
- European Research Council [ERC]
- Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR) (through Organization: Ministero dell'Istruzione, dell'Università e della Ricerca / Ministry of Education, Universities and Research [MIUR])
- Narodowe Centrum Nauki / National Science Center [NCN]
- Vetenskapsrådet / Swedish Research Council
