Sivers asymmetry in inelastic $J/\psi$ leptoproduction at the EIC

TL;DR

This paper investigates the Sivers asymmetry in inelastic $J/\psi$ leptoproduction at the EIC using a generalized parton model that incorporates final-state interactions and NRQCD for $J/\psi$ formation, providing predictions for cross sections and asymmetries.

Contribution

It introduces a comprehensive analysis of Sivers asymmetry in inelastic $J/\psi$ production at the EIC, combining the CGI-GPM and NRQCD frameworks for the first time.

Findings

Predicted unpolarized cross sections at EIC energies.

Estimated maximized Sivers asymmetries for $J/\psi$ production.

Demonstrated the impact of final-state interactions on asymmetry predictions.

Abstract

We study the Sivers asymmetry in inelastic $J/\psi$ leptoproduction, $ep^\uparrow \to e+ J/\psi+X$, within a transverse momentum dependent scheme, the so-called generalized parton model (GPM). The effects of final-state interactions are properly taken into account by employing the color-gauge invariant GPM (CGI-GPM). For the $J/\psi$ formation the non-relativistic QCD (NRQCD) framework is adopted. Predictions for unpolarized cross sections and maximized Sivers asymmetries at EIC energies are given.