https://doi.org/10.1140/epjc/s10052-019-6973-3
Letter
Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme
1
Institute for Theoretical Physics, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 14, 72076, Tübingen, Germany
2
Theory Division, IFIC, University of Valencia-CSIC, 46980, Paterna, Valencia, Spain
3
Institute for Theoretical Physics, Karlsruhe Institute of Technology, 76128, Karlsruhe, Germany
4
Theory Group LTP, Paul Scherrer Institut, PSI, 5232, Villigen, Switzerland
5
Institut für Theoretische Physik, Zürich University, 8057, Zurich, Switzerland
* e-mail: julien.baglio@uni-tuebingen.de
Received:
6
December
2018
Accepted:
22
May
2019
Published online:
30
May
2019
We present the calculation of the full next-to-leading order (NLO) QCD corrections to Higgs boson pair production via gluon fusion at the LHC, including the exact top-mass dependence in the two-loop virtual and one-loop real corrections. This is the first independent cross-check of the NLO QCD corrections presented in the literature before. Our calculation relies on numerical integrations of Feynman integrals, stabilised with integration-by-parts and a Richardson extrapolation to the narrow width approximation. We present results for the total cross section as well as for the invariant Higgs-pair-mass distribution at the LHC, including for the first time a study of the uncertainty due to the scheme and scale choice for the top mass in the loops.
© The Author(s), 2019
