Phenomenology of gluon TMDs from $\eta_{b,c}$ production

TL;DR

This paper explores how the production of eta_b and eta_c mesons in proton collisions can be used to study gluon transverse-momentum dependent parton distributions, especially in unpolarized conditions and fixed-target experiments at the LHC.

Contribution

It provides a phenomenological analysis of gluon TMDs through eta_b,c production, highlighting their potential to reveal gluon dynamics in unpolarized proton collisions.

Findings

Eta_b,c production can probe gluon TMDs effectively.

Fixed-target experiments at LHC can access gluon polarization information.

The study offers predictions for different kinematic regimes.

Abstract

We present the potential of $\eta_{b,c}$ production in proton collisions to access the gluon transverse-momentum dependent parton distributions (TMDs). In particular, we explore the phenomenology of the unpolarized and linearly-polarized gluon TMDs in unpolarized collisions for different kinematic settings, and the potential of a fixed-target experiment at the LHC.