Suppressions of dijet azimuthal correlations in the future EIC

Quark-antiquark pair (or dijet) production at the Electron-Ion Collider has been argued to be one of the most important processes that allows access to the Weizsacker-Williams (WW) gluon distributions in the small-x limit. Within the framework of color glass condensate effective field theory, we calculate the dijet cross sections and azimuthal correlations at the partonic level by including the Sudakov resummations. Our numerical results show that the back-to-back correlations are significantly suppressed when the Sudakov resummations are taken into account. In addition, by using the solutions of the running-coupling Balitsky-Kovchegov equation, the unpolarized and linearly polarized WW gluon distributions in both coordinate and momentum space are presented.