JIMWLK evolution: from color charges to rapidity correlations

TL;DR

This paper investigates multi-particle production and rapidity correlations in high-energy proton-nucleus collisions using a generalized JIMWLK evolution within the Color Glass Condensate framework, providing a Langevin formulation for the evolution of nuclear fields.

Contribution

It introduces a generalized JIMWLK equation for multi-particle rapidity correlations and derives a Langevin formulation involving color charge densities linked to projectile partons.

Findings

Derived a Langevin formulation for the generalized JIMWLK evolution.

Provided a theoretical framework for rapidity correlations in high-energy collisions.

Enhanced understanding of nuclear field evolution in the CGC model.

Abstract

We study multi-particle production with rapidity correlations in high-energy p+A collisions. In the context of the Color Glass Condensate, the evolution for such correlations is governed by a generalization of the JIMWLK equation which evolves the strong nuclear fields both in the amplitude and in the complex conjugate one. We give the equivalent Langevin formulation, whose main ingredient is the color charge density linked to a projectile parton (a Wilson line).