Back-to-Back Correlations of Di-hadrons in dAu Collisions at RHIC

TL;DR

This paper provides a comprehensive theoretical analysis of di-hadron azimuthal correlations in dAu collisions at RHIC, demonstrating how suppression and broadening of the away side peak signal saturation effects at small-x in nuclei.

Contribution

It offers a detailed saturation formalism analysis that matches experimental data and highlights the importance of future collider experiments for understanding saturation physics.

Findings

Good agreement with experimental data

Suppression and broadening indicate saturation effects

Future experiments will deepen understanding of strong interactions

Abstract

We perform a complete theoretical analysis of the azimuthal angular correlation of two-hadron productions in the forward $dAu$ collisions at RHIC in the saturation formalism, and obtain a very good agreement with the experimental data. It is demonstrated that the suppression and broadening of the away side peak provide a unique signal for the onset of the saturation mechanism at small-$x$ in a large nucleus. We emphasize that future experiments of di-hadron correlations in $pA$ collisions at both RHIC and LHC, and in $eA$ collisions at the planned electron-ion collider, shall provide us with a thorough study and understanding of the strong interaction dynamics in the saturation regime.