Accessing unpolarized and linearly polarized gluon TMDs through quarkonium production

TL;DR

This paper explores how unpolarized and linearly polarized gluon TMDs can be accessed through quarkonium production in unpolarized proton-proton collisions at various collider energies, using theoretical models and data comparison.

Contribution

It introduces a method to probe gluon TMDs via quarkonium production employing the COM within TMD factorization, comparing theoretical predictions with experimental data.

Findings

Agreement between COM predictions and experimental data for quarkonium transverse momentum distributions.

Identification of potential signatures of gluon polarization effects in quarkonium production.

Enhanced understanding of gluon TMDs in high-energy proton-proton collisions.

Abstract

We present the study of accessing unpolarized and linearly polarized gluon TMDs in J/{\psi} and {\Upsilon}(1S) production in unpolarized proton-proton collision at LHC, RHIC and AFTER energies. Non- relativistic QCD based color octet model (COM) is used for estimating quarkonium production rates within transverse momentum dependent factorization formalism. A comparison is drawn between the experimental data and the transverse momentum distribution of quarkonium obtained in COM and color evaporation model.