# Non-eikonal corrections to multi-particle production in the Color Glass Condensate

## TL;DR

This paper investigates non-eikonal corrections in particle production within the Color Glass Condensate framework, accounting for finite target width effects, and explores their impact on multi-gluon correlations and particle correlation structures.

## Contribution

It derives a modified Lipatov vertex incorporating finite target width and applies it to compute multi-gluon production, extending previous results in the Glasma graph limit.

## Key findings

- Non-eikonal corrections affect two-particle correlation peaks.
- Finite target width modifies gluon production amplitudes.
- Results suggest potential explanations for near- and away-side correlation differences.

## Abstract

We consider the non-eikonal corrections to particle production in the Color Glass Condensate stemming from the relaxation of the shockwave approximation for the target that acquires a finite longitudinal dimension. We derive a modified expression of the Lipatov vertex which takes into account this finite target width. This expression is employed to compute single, double and triple gluon production in the Glasma graph limit valid for the scattering of two dilute objects, at all orders in the expansion in the number of colors. We justify and generalize previous results, and discuss the possible implications on two particle correlations of these non-eikonal corrections that induce differences between the away- and near-side peaks.