Abstract
We compute the hadronic production of top-antitop pairs in association with a Higgs boson at next-to-leading-order QCD, including the decay of the top and antitop quark into bottom quarks and leptons. Our computation is based on full leading and next-to-leading-order matrix elements for \( {\mathrm{e}}^{+}{\nu}_{\mathrm{e}}{\mu}^{-}{\overline{\nu}}_{\mu}\mathrm{b}\overline{\mathrm{b}}\mathrm{H}\left(\mathrm{j}\right) \) and includes all non-resonant contributions, off-shell effects and interferences. Numerical results for the integrated cross section and several differential distributions are given for the LHC operating at 13 TeV using a fixed and a dynamical factorization and renormalization scale. The use of the dynamical instead of the fixed scale improves the perturbative stability in high-energy tails of most distributions, while the integrated cross section is hardly affected differing by only about one per cent and leading to almost the same K factor of about 1.17.
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Denner, A., Feger, R. NLO QCD corrections to off-shell top-antitop production with leptonic decays in association with a Higgs boson at the LHC. J. High Energ. Phys. 2015, 209 (2015). https://doi.org/10.1007/JHEP11(2015)209
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DOI: https://doi.org/10.1007/JHEP11(2015)209