Ponente
Descripción
Unraveling the inner dynamics of gluons and quarks inside nucleons is a primary target of studies at colliders. Finding an answer to fundamental problems of Quantum ChromoDynamics, such as the origin of nucleon mass and spin, strongly depends on our ability of reconstructing the 3D motion of partons inside the parent hadrons. We present progresses and challenges in the study and extraction of gluon transverse-momentum-dependent parton densities (TMD PDFs), which still represent a largely unexplored field. Particular attention is paid to the time-reversal odd gluon TMD PDFs, which represent a key ingredient in the description of relevant spin-asymmetries emerging when the nucleon is polarized, as the gluon Sivers effect. All these analyses are helpful to shed light on the gluon dynamics inside nucleons and nuclei, which is one of the primary goals of new-generation colliders, as the Electron-Ion Collider, the High-Luminosity LHC its fixed-target program.
