Momentum transfer dependence of heavy quarkonium electroproduction

Abstract

We investigate the momentum transfer dependence of differential cross sections $d\sigma /dt$ in diffractive electroproduction of heavy quarkonia on proton targets. Model predictions for $d\sigma /dt$ within the light-front QCD dipole formalism are based on a realistic model for a proper correlation between the impact parameter $\vec{b}$ of a collision and color dipole orientation $\vec{r}$. We demonstrate a significance of $\vec{b}-\vec{r}$ correlation by comparing with a standard simplification $\vec{b}\parallel \vec{r}$, frequently used in the literature.

Comments: 5 pages, submission to SciPost, proceedings of DIS2021