A spectator-model way to transverse-momentum-dependent gluon distribution functions
Alessandro Bacchetta, Francesco Giovanni Celiberto, Marco Radici, Pieter Taels
Abstract
We present exploratory analyses of the 3D gluon content of the proton via a study of unpolarized and polarized gluon TMDs at twist-2, calculated in a spectator model for the parent nucleon. Our approach embodies a flexible parametrization for the spectator-mass function, suited to describe both moderate and small-x effects. All these studies can serve as a useful guidance 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, NICA, and the FPF.
Topics & Concepts
GluonPhysicsNucleonParametrization (atmospheric modeling)Particle physicsLarge Hadron ColliderTransverse planeNuclear physicsProtonDistribution functionTwistQuantum chromodynamicsQuantum mechanicsMathematicsEngineeringGeometryRadiative transferStructural engineeringHigh-Energy Particle Collisions ResearchParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle Interactions