3D tomography of the nucleon: transverse-momentum-dependent gluon distributions

Abstract

We perform explorative analyses of the 3D gluon content of the proton via a study of (un)polarized twist-2 gluon TMDs, calculated in a spectator model for the parent nucleon. Our approach encodes a flexible parametrization for the spectator-mass density, suited to describe both moderate and small-$x$ effects. All these prospective developments are relevant in the investigation of the gluon dynamics inside nucleons and nuclei, which constitutes one of the major goals of new-generation colliding machines, as the EIC, the HL-LHC and NICA.

Comments: 5 pages, 1 figure, 106th National Congress of the Italian Physical Society (SIF), contribution selected by the Scientific Committee for Best Communications, paper submitted to Nuovo Cim. C; version published in Nuovo Cim. C