# Diffractive dijet production in impact parameter dependent saturation models

## TL;DR

This paper investigates coherent diffractive dijet production in electron-hadron and electron-nucleus collisions using saturation models, providing analytic and numerical insights into how the process depends on saturation effects, target geometry, and kinematics.

## Contribution

It introduces semi-analytic formulas linking dipole amplitude angular moments to diffractive dijet cross sections and extends saturation models to include target geometry effects.

## Key findings

- Analytic expressions for differential cross section and elliptic anisotropy at high photon virtuality.
- Numerical results showing the impact of saturation and target geometry on observables.
- Demonstration of the relation between dipole amplitude moments and dijet angular distributions.

## Abstract

We study coherent diffractive dijet production in electron-hadron and electron-nucleus collisions within the dipole picture. We provide semi-analytic results for the differential cross section and elliptic anisotropy in the angle between dijet transverse momentum and hadron recoil momentum. We demonstrate the direct relation between angular moments of the dipole amplitude in coordinate space and angular moments of the diffractive dijet cross sections. To perform explicit calculations we employ two different saturation models, extended to include the target geometry. In the limit of large photon virtuality or quark masses, we find fully analytic results that allow direct insight into how the differential cross section and elliptic anisotropy depend on the saturation scale, target geometry, and kinematic variables. We further provide numerical results for more general kinematics in collisions at a future electron-ion collider, and study the effects of approaching the saturated regime on diffractive dijet observables.