Theoretical predictions for $t\bar{t}W$ cross sections at approximate N${}^3$LO

Abstract

We present theoretical calculations of higher-order QCD and electroweak corrections for the associated production of a top-antitop quark pair and a $W$ boson ($t\bar{t}W$ production) at LHC energies. We show predictions for cross sections at approximate N${}^3$LO (aN${}^3$LO) which include second-order and third-order soft-gluon corrections added to the exact NLO QCD+electroweak result. We compare our results to recent measurements from the LHC, and we find that our predictions provide improved agreement with the data. We also calculate the top-quark transverse momentum and rapidity distributions in $t\bar{t}W$ production. We find significant enhancements from the higher-order corrections to the total and differential cross sections for this process.

Comments: 5 pages, 2 figures; in proceedings of the 31st International Workshop on Deep Inelastic Scattering and Related Subjects (DIS2024), 8-12 April 2024, Grenoble, France