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arXiv · 2501.08806

The 3D structure of the Nucleon in momentum space: TMD phenomenology

Marco Radici
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Abstract

I give a brief overview of our current understanding of the internal partonic 3D structure of nucleons in momentum space. I discuss some recent extractions of transverse-momentum-dependent distributions for quarks, whose analyses in the unpolarized case are reaching a theoretical precision comparable to collinear parton distribution functions. On the contrary, gluon transverse-momentum-dependent distributions are poorly known from a phenomenological point of view. I briefly review their general properties and sketch a recent model calculation covering all (un)polarized combinations at leading twist.

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Marco Radici. 2025-01-15. The 3D structure of the Nucleon in momentum space: TMD phenomenology. https://arxiv.org/abs/2501.08806

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