# Spinor helicity methods in high-energy factorization: efficient momentum-space calculations in the Color Glass Condensate formalism

## TL;DR

This paper applies spinor helicity formalism to efficiently compute three-parton production cross sections in high-energy DIS within the Color Glass Condensate framework, enabling detailed angular correlation analysis.

## Contribution

It introduces a novel application of spinor helicity methods to high-energy factorization calculations in the Color Glass Condensate formalism, providing detailed momentum-space computations.

## Key findings

- Derived explicit cross section expressions for three-parton production.
- Analyzed azimuthal angular correlations of produced partons.
- Enhanced computational efficiency in high-energy QCD calculations.

## Abstract

We use the spinor helicity formalism to calculate the cross section for production of three partons of a given polarization in Deep Inelastic Scattering (DIS) off proton and nucleus targets at small Bjorken x. The target proton or nucleus is treated as a classical color field (shock wave) from which the produced partons scatter multiple times. We reported our result for the final expression for the production cross section and studied the azimuthal angular correlations of the produced partons in [1]. Here we provide the full details of the calculation of the production cross section using the spinor helicity methods.