Phenomenological studies of exclusive heavy-quarkonium electroproduction at NLO

TL;DR

This paper uses NLO calculations to analyze heavy-quarkonium electroproduction, comparing with HERA data and predicting EIC outcomes, highlighting the importance of resummation for accurate results.

Contribution

It provides the first phenomenological analysis of heavy-quarkonium electroproduction at NLO, including comparisons with experimental data and future predictions.

Findings

NLO cross-section calculations agree with HERA data across various Q^2.

Predictions for EIC measurements are provided.

Resummation of logarithmic contributions is crucial for J/psi electroproduction.

Abstract

Using the next-to-leading order (NLO) coefficient functions for exclusive electroproduction of heavy vector mesons derived in our previous work, we perform various phenomenological studies of exclusive electroproduction in $ep$ collisions relevant for both the existing measurements from HERA, and the forthcoming Electron-Ion Collider (EIC). We compare our cross-section results to HERA data across a broad range of photon virtualities $Q^2$ and $\gamma^* p$ centre-of-mass energies, provide predictions for upcoming EIC measurements and conclude with a discussion on the necessity of resumming logarithmically enhanced contributions in $J/\psi$ electroproduction.