Higher-order corrections for $t\bar{t}$ production at high energies

Abstract

I present theoretical calculations of $t\bar{t}$ production cross sections through aN${}^3$LO in proton-proton collisions. I show that soft-gluon corrections dominate the perturbative expansion not only for LHC energies but also for future collider energies through 100 TeV. Detailed results are presented for various collision energies. The $K$-factors are large and increase slowly with increasing energy. The scale uncertainties decrease greatly as we move to higher perturbative orders.

Comments: 6 pages, 2 figures, 2 tables; contribution to Snowmass 2021