Polarized internal target experiments based on EIC beams

TL;DR

This paper discusses the potential of using polarized internal targets at the upcoming Electron-Ion Collider to significantly enhance nucleon structure studies across various x regimes, leveraging high beam polarization and intensity.

Contribution

It introduces the concept of polarized internal target experiments at EIC, highlighting their high figure-of-merit and potential for advanced nucleon structure investigations.

Findings

Figure-of-Merit at EIC will be 500+ times higher than HERMES.

Enables high-precision studies of nucleon structure in low to high x regimes.

Utilizes novel electron beam operation with high polarization and intensity.

Abstract

The Electron-Ion Collider is under construction at BNL. It will have high-energy high-intensity polarized beams of electrons and hadrons. These beams will allow a high accuracy investigation of nucleon structure in the low- to very-low-x DIS regime. At the same time, similar to the realization at HERA, these beams could be used with an internal target for a very productive investigation of medium- to high-x nucleon structure. Due to a novel regime of electron beam operation and its high polarization and intensity, the Figure-of-Merit of an internal target experiment at EIC will be 500+ times higher than was obtained by HERMES.