The distribution of linearly polarized gluons and elliptic azimuthal anisotropy in DIS dijet production at high energy

TL;DR

This paper calculates the distribution of linearly polarized gluons in a dense target at small x and predicts significant azimuthal asymmetries in DIS dijet production, providing insights into gluon polarization effects at high energies.

Contribution

It introduces a method to determine gluon polarization distributions by solving B-JIMWLK equations and estimates resulting azimuthal asymmetries in DIS dijet production.

Findings

Azimuthal asymmetries of about 10% in DIS dijet production.

Long-range rapidity correlations in azimuthal asymmetries.

Quantitative predictions for gluon polarization effects.

Abstract

We determine the distribution of linearly polarized gluons of a dense target at small $x$ by solving the B-JIMWLK rapidity evolution equations. From these solutions we estimate the amplitude of $\sim \cos 2\phi$ azimuthal asymmetries in DIS dijet production at high energies. We find sizeable long-range in rapidity azimuthal asymmetries with a magnitude in the range of $v_2=\langle\cos 2\phi\rangle \sim 10\%$.