Soft limit of two-loop QCD amplitudes with external massive quarks

by Sebastian Sapeta

Thursday 5 Jun 2025, 14:00 → 15:00 Europe/Warsaw

I will discuss calculation of the two-loop correction to the soft-gluon current for the case of two massive final-state quarks. This quantity is process-independent and governs the singular behavior of massive QCD amplitudes when one external gluon becomes soft. The two-loop massive soft current is a necessary ingredient for evaluation of N3LO corrections to cross sections for processes with massive fermions produced at hadron colliders.