Probing Gluon Saturation through Dihadron Correlations at an Electron-Ion Collider

Understand

Two-particle azimuthal angle correlations have been proposed to be one of the most direct and sensitive probes to access the underlying gluon dynamics involved in hard scatterings.

• In anticipation of an Electron-Ion Collider (EIC), detailed studies of dihadron correlation measurements in electron-proton and electron-ion collisions at an EIC have been performed.
• The impact of such measurements on the understanding of the different gluon distribution functions, as a clean signature for gluon saturation and to constrain saturation models further, has been explored.
• It is shown that dihadron correlation measurements will be one of the key methods to probe gluon saturation phenomena at a future EIC.