Speaker
Laura Moreno Valero
(University of Münster)
Description
In this talk we present results for soft gluon threshold resummation applied to the production of four top quarks. Current theoretical predictions include next-to-leading (NLO) strong and electroweak corrections, yielding a relatively large associated systematic error. By considering the matching of the next-to-leading logarithmic (NLL) result to the available NLO result, we achieve NLO+NLL$^\prime$ precision for the total cross section, which in addition to logarithmic terms also takes into account $\mathcal{O}(\alpha_s)$ non-logarithmic terms that do not vanish at threshold. The threshold-resummed result shows an improved scale dependence when compared to the fixed-order calculation.
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Authors
Prof.
Anna Kulesza
(University of Münster)
Laura Moreno Valero
(University of Münster)
Melissa van Beekveld
(University of Oxford)
