Threshold Resummation for the Production of Four Top Quarks at the LHC

This is the authors' abstract. We don't add key points for this paper.

We compute the total cross section for tt[over ¯]tt[over ¯] production at next-to-leading logarithmic (NLL') accuracy. This is the first time resummation is performed for a hadron-collider process with four colored particles in the final state. The calculation is matched to the next-to-leading order strong and electroweak corrections. The NLL' corrections enhance the total production rate by 15%. The size of the theoretical error due to scale variation is reduced by more than a factor of 2, bringing the theoretical error significantly below the current experimental uncertainty of the measurement.