Infrared subtraction for precision physics at the LHC

by Fabrizio Caola (University of Oxford)

Thursday 4 Jul 2019, 14:00 → 15:00 Europe/Zurich

Aula Caldirola (Dipartimento di Fisica, Università degli Studi di Milano)

An important ingredient for the precision program at the LHC are sophisticated higher order perturbative QCD calculations. A key difficulty of these calculations is the appearance of a non-trivial infrared singularity structure, that must be dealt with. In this talk, I will discuss this problem and some of its proposed solutions. In particular, I will describe the nested soft-collinear subtraction scheme, which is the first method which is both fully local and fully analytic. I will give an overview of the construction, emphasising its physical transparency and relative compactness, and will give a short outlook on future developments.