Non-resonant and electroweak NNLO correction to the e+ e- top anti-top threshold
Abstract
We determine the NNLO electroweak correction to the e+ e- bbW+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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