Forward inclusive dijet production and azimuthal correlations in pA collisions

TL;DR

This paper derives a theoretical framework for forward inclusive dijet production in proton-nucleus collisions, incorporating small-x QCD effects and multiple scatterings, relevant for interpreting azimuthal correlations observed at RHIC and LHC.

Contribution

It introduces a comprehensive model combining Color Glass Condensate formalism with non-linear QCD evolution for forward dijet production in pA collisions.

Findings

Azimuthal angle distribution peaks back-to-back

Distribution broadens near the saturation scale

Model applicable to RHIC and LHC energies

Abstract

We derive forward inclusive dijet production in the scattering of a dilute hadron off an arbitrary dense target, whose partons with small fraction of momentum x are described by a Color Glass Condensate. Both multiple scattering and non-linear QCD evolution at small-x are included. This is of relevance for measurements of two-particle correlations in the proton direction of proton-nucleus collisions at RHIC and LHC energies. The azimuthal angle distribution is peaked back to back and broadens as the momenta of the measured particles gets closer to the saturation scale.