# Nuclear parton density functions from jet production in DIS at the EIC

## TL;DR

This study shows that jet production in deep-inelastic scattering at a future Electron-Ion Collider can significantly refine our understanding of nuclear parton density functions, especially the gluon density at low Bjorken-x, by reducing uncertainties.

## Contribution

It demonstrates the potential of jet production measurements at the EIC to substantially improve nuclear PDF precision, particularly for gluons at low x, using advanced aNNLO calculations.

## Key findings

- Uncertainty in nuclear PDFs, especially gluons, can be reduced by up to tenfold.
- Jet production extends the kinematic reach similarly to inclusive DIS.
- Predictions made for different EIC designs and nuclear targets.

## Abstract

We investigate the potential of inclusive-jet production in deep-inelastic scattering (DIS) at a future Electron-Ion Collider (EIC) to improve our current knowledge of nuclear parton density functions (PDFs). We demonstrate that the kinematic reach is extended similarly to inclusive DIS, but that the uncertainty of the nuclear PDFs, in particular of the gluon density at low Bjorken-x, is considerably reduced, by up to an order of magnitude compared to the present situation. Using an approximate next-to-next-to-leading order (aNNLO) calculation implemented in the program JetViP, we also make predictions for three different EIC designs and for four different light and heavy nuclei.