  Jet production and jet substructure in reactions with nuclei at future
electron-ion colliders will play a preeminent role in the exploration of
nuclear structure and the evolution of parton showers in strongly-interacting
matter. In the framework of soft-collinear effective theory, generalized to
include in-medium interactions, we present the first theoretical study of
inclusive jet cross sections and the jet charge at the EIC. Predictions for the
modification of these observables in electron-gold relative to electron-proton
collisions reveal how the flexible center-of-mass energies and kinematic
coverage at this new facility can be used to enhance the signal and maximize
the impact of the electron-nucleus program. Importantly, we demonstrate
theoretically how to disentangle the effects from nuclear parton distribution
functions and the ones that arise from strong final-state interactions between
the jet and the nuclear medium.
