Universal structure of the Drell-Yan process beyond threshold

TL;DR

This paper reviews recent advances in understanding the universal structure of threshold logarithms at next-to-leading power in the Drell-Yan process, using region calculations and soft-collinear factorization at NNLO.

Contribution

It demonstrates that the entire logarithmic structure of the Drell-Yan cross section at NNLO can be described by universal functions through soft-collinear factorization.

Findings

Threshold logarithms can be reproduced with region calculation methods.

Universal functions capture the full logarithmic structure.

Results extend understanding of power corrections in Drell-Yan processes.

Abstract

We review recent results in the investigation of threshold logarithms at next-to-leading power considering the case of the Drell-Yan cross section at NNLO. We first show how they can be reproduced with a method of region calculation. Then we move to an approach based on soft- collinear factorization, showing that the entire logarithmic structure can be reproduced by means of universal functions.