Brief Review of Saturation Physics

TL;DR

This paper provides a concise overview of saturation physics, highlighting recent advances in nonlinear small-x evolution equations, models, and phenomenology relevant to high-energy quantum chromodynamics.

Contribution

It summarizes recent progress in understanding nonlinear small-x evolution, including models, equations, and corrections, offering a comprehensive update in saturation physics.

Findings

Review of McLerran-Venugopalan model

Summary of nonlinear BK/JIMWLK evolution equations

Discussion of running-coupling and NLO corrections

Abstract

We present a short overview of saturation physics followed by a summary of the recent progress in our understanding of nonlinear small-$x$ evolution. Topics include McLerran-Venugopalan model, Glauber-Mueller approximation, nonlinear BK/JIMWLK evolution equations, along with the running-coupling and NLO corrections to these equations. We conclude with selected topics in saturation phenomenology.