Abstract
We determine the NNLO electroweak correction to the \( {e}^{+}{e}^{-}\to b\overline{b}{W}^{+}{W}^{-}X \) production cross section near the top-pair production threshold. The calculation includes non-resonant production of the final state as well as electroweak effects in resonant top anti-top pair production with non-relativistic resummation, and elevates the theoretical prediction to NNNLO QCD plus NNLO electroweak accuracy. We then study the impact of the new contributions on the top-pair threshold scan at a future lepton collider.
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Beneke, M., Maier, A., Rauh, T. et al. Non-resonant and electroweak NNLO correction to the e+e− top anti-top threshold. J. High Energ. Phys. 2018, 125 (2018). https://doi.org/10.1007/JHEP02(2018)125
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DOI: https://doi.org/10.1007/JHEP02(2018)125