Speaker
Andrea Simonelli
(INFN Roma 1)
Description
Transverse Momentum Dependent (TMD) parton distribution functions are rigorously defined QCD operators; however, their extraction remains challenging due to the dominance of non-perturbative effects at low energy scales. As a result, the role of phenomenological modeling is difficult to systematically control and may lead to potential misinterpretations of the information encoded in experimental data.
In this talk, commonly adopted extraction strategies are reviewed and critically assessed, with the aim of embedding the phenomenological description of TMDs within the broader framework of low-energy QCD.