Gluon TMD studies at EIC

TL;DR

This paper discusses how a future Electron-Ion Collider can advance the study of gluon transverse momentum distributions, including polarization effects and process dependence, complementing LHC measurements.

Contribution

It highlights the potential of EIC to explore detailed gluon TMDs and their process dependence, providing new insights into gluon dynamics inside hadrons.

Findings

EIC can probe unpolarized and polarized gluon TMDs

Comparison with LHC can reveal process dependence of gluon distributions

Study of gluon Sivers effect at EIC

Abstract

A high-energy Electron-Ion Collider (EIC) would offer a most promising tool to study in detail the transverse momentum distributions of gluons inside hadrons. This applies to unpolarized as well as linearly polarized gluons inside unpolarized protons, and to left-right asymmetric distributions of gluons inside transversely polarized protons, the so-called gluon Sivers effect. The inherent process dependence of these distributions can be studied by comparing to similar, but often complementary observables at LHC.