Calculation of two-loop QCD corrections for hadronic single top-quark production in the t channel

Understand

In this article we discuss the calculation of single top-quark production in the t channel at two-loop order in QCD.

• In particular we present the decomposition of the amplitude according to its spin and colour structure and present complete results for the two-loop amplitudes in terms of master integrals.
• For the vertex corrections compact analytic expressions are given.
• The box contributions are implemented in a publicly available C program.