Two-Particle Azimuthal Correlations at Forward Rapidity in d+Au Collisions at √s_NN=200 GeV.

Gluons dominate the nuclear wavefunction at low x, where x is the parton's momentum fraction of a nucleon within the nucleus. It is now well established that fewer gluons per nucleon are present in the nucleus than in a bare proton. This reduction may be the result of gluon saturation within the nucleus as described by the Color Glass Condensate (CGC) model where an equilibration between gluon splitting and gluon fusion at low x is established leading to a saturation of gluons within the nucleus. Two-particle azimuthal correlations at forward rapidity in d+Au collisions are sensitive to both the number and the kinematics of low-x gluon kinematics in the gold nucleus making them useful to study the CGC. In 2016, PHENIX took data with the MPC-EX detector, which consists of eight finely segmented Si-W presampling layers in front of the MPC electromagnetic calorimeter located at 3.1<η<3.8. The goal of the MPC-EX is to study gluon saturation. In this talk we present the current status of the analysis of π⁰-π⁰ correlations measured in the MPC+MPC-EX acceptance of the PHENIX detector at 200 GeV d+Au collisions and discuss their implications for understanding gluon saturation.