What can we learn from TMD measurements?
Alessandro Bacchetta (JLab)
TL;DR
This paper reviews the current understanding of TMD measurements, highlighting their role in revealing the three-dimensional momentum structure of nucleons and their implications for partonic orbital angular momentum.
Contribution
It synthesizes recent theoretical and experimental developments in TMD studies, emphasizing their significance in understanding hadronic structure.
Findings
TMDs provide insights into the 3D momentum space of nucleons.
Evidence suggests partonic orbital angular momentum contributes to nucleon spin.
TMD measurements are central to advancing hadronic physics.
Abstract
Transverse-momentum-dependent parton distribution and fragmentation functions describe the partonic structure of the nucleon in a three-dimensional momentum space. They are subjects of flourishing theoretical and experimental activity. They provide novel and intriguing information on hadronic structure, including evidence of the presence of partonic orbital angular momentum.
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