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

Abstract

We study the Sivers asymmetry in inelastic $J/\psi$ leptoproduction, $e{p}^{\uparrow }\to e+J/\psi +X$, 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.

Comments: 7 pages, 2 figures. Contribution to the XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2021), April 12-16, 2021. Submission to SciPost Physics Proceedings