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Partonic structure of the Nucleon in QCD and Nuclear Physics: new developments from old ideas

Marco Radici
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Abstract

The nucleon is an ideal laboratory to solve QCD in the nonperturbative regime. There are several experimental observations that still lack a rigorous interpretation; they involve the nucleon as a (polarized) target as well as a beam (in collisions and Drell-Yan processes). These data look like big azimuthal and spin asymmetries, related to the transverse polarization and momentum of the nucleon and/or the final detected particles. They suggest internal reaction mechanisms that are suppressed in collinear perturbative QCD but that are "natural" in Nuclear Physics: quark helicity flips, residual final state interactions, etc.. In my talk, I will give a brief survey of the main results and I will flash the most recent developments and measurements.

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Marco Radici. 2005-01-12. Partonic structure of the Nucleon in QCD and Nuclear Physics: new developments from old ideas. https://doi.org/10.1142/9789812701985_0021

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