# Semi-inclusive Deep-Inelastic Scattering, Parton Distributions and Fragmentation Functions at a Future Electron-Ion Collider

## TL;DR

This paper evaluates how future Electron-Ion Collider data could improve the precision of proton parton distribution functions and fragmentation functions through semi-inclusive deep-inelastic scattering analysis.

## Contribution

It provides a quantitative assessment of the potential impact of future EIC data on parton distribution and fragmentation functions, identifying key kinematic regions for data collection.

## Key findings

- Future EIC data can significantly reduce uncertainties in PDFs and FFs.
- Certain kinematic configurations are most influential for improving distributions.
- Reweighting techniques effectively update PDFs and FFs with simulated data.

## Abstract

We present a quantitative assessment of the impact a future Electron-Ion Collider would have in the determination of parton distribution functions in the proton and parton-to-hadron fragmentation functions through semi-inclusive deep-inelastic electron-proton scattering data. Specifically, we estimate the kinematic configurations for which the forthcoming data are expected to have the most significant impact in the precision of these distributions, computing the respective correlation and sensitivity coefficients. Implementing the reweighting technique over sets of simulated data with realistic uncertainties for two different center-of-mass energies, we analyse the resulting upgraded sets of PDFs and FFs, which have significantly reduced uncertainties.