Enchancing the Photon-Gluon Fusion Contribution to Dihadron Azimuthal Correlations in Electron-Ion Collisions.

Dihadron production from dijets in electron-ion collisions has been shown to be a sensitive probe to the low-x gluon content of the nucleus. There are two leading dijet mechanisms in these collisions: QCD Compton scattering γ*+q --> q + g, and photon-gluon fusion γ*+g --> q + anti-q. It is the latter diagram that is directly sensitive to the gluon content of the target nucleus. Using DJANGOH simulations, we have studied several different ways to measure identified and unidentified charged tracks within the kinematic range of the future electron-ion collider detector that enhance the photon-gluon contributions to dihadron azimuthal correlations. We report those studies and give an outlook of the impact on our understanding of the low-x gluon content of the nucleus that acheivable with these future measurements.