Phenomenological implementations of TMD evolution

TL;DR

This paper discusses the challenges and considerations in applying Transverse Momentum Dependent (TMD) evolution models to SIDIS processes, highlighting differences from Drell-Yan applications and exploring various experimental configurations.

Contribution

It provides a phenomenological analysis of TMD evolution in SIDIS, addressing the interplay of perturbative and non-perturbative effects and discussing existing controversies.

Findings

TMD evolution models are well-understood in Drell-Yan but face challenges in SIDIS.

Different kinematic configurations significantly affect TMD phenomenology.

Practical examples illustrate the complexities in applying TMD evolution to SIDIS.

Abstract

Although the theoretical set-up of TMD evolution appears to be well established, its phenomenological implementations still require special attention, particularly as far as the interplay between perturbative and non-perturbative contributions is concerned. These issues have been extensively studied in Drell-Yan processes, where they seem to be reasonably under control. Instead, applying the same prescriptions and methodologies to Semi-Inclusive Deep Inelastic (SIDIS) processes is, at present, far from obvious. Some of the controversies related to the applications of TMD Evolution to SIDIS processes will be discussed with practical examples, exploring different kinematical configurations of SIDIS experiments.