Melissa van Beekveld, 09.06.20

 

Melissa van Beekveld (Nikhef / Radboud University Nijmegen)

Power up your logarithm: the large impact of 'subleading' terms

Abstract:

Cross-sections in perturbative QCD are plagued by large corrections from soft and collinear radiation. The most singular terms are known to be universal, which allows their resummation to all orders in the coupling, hereby curing the cross-section of the large uncertainties. In this talk, I will give a broad introduction as to how these large corrections arise, how resummation solves the issue, and whether we can expect the same universal structure for a class of next-to-singular contributions. We also discuss their numerical impact.

Host: Michael Krämer