Electron-ion collider impact study on the tensor charge of the nucleon

In this letter we study the impact of the Electron-Ion Collider (EIC) on the phenomenological extraction of the tensor charge from a QCD global analysis of single transverse-spin asymmetries (SSAs). We generate EIC pseudo-data for the Collins effect in semi-inclusive deep-inelastic scattering for proton and He-3 beams across multiple center-of-mass energies. We find a significant reduction in the uncertainties for the up, down, and isovector tensor charges that will make their extraction from EIC data on SSAs as precise as current lattice QCD calculations. We also analyze the constraints placed by future data from the proposed SoLID experiment at Jefferson Lab, discuss its important complementary role to the EIC, and present the combined impact from both facilities. (C) 2021 The Author(s). Published by Elsevier B.V.

Automated summary

This study investigates the impact of the EIC on the extraction of tensor charges from SSAs, finding a significant reduction in uncertainties for the up, down, and isovector tensor charges using EIC data. It also discusses the complementary role of the SoLID experiment to the EIC and presents the combined impact of both facilities.