# Lowest order QED radiative effects in polarized SIDIS

## TL;DR

This paper derives exact analytical formulas for the lowest-order QED radiative corrections in polarized semi-inclusive deep inelastic scattering, facilitating precise numerical analysis and addressing infrared divergences.

## Contribution

It provides the most compact covariant expressions for radiative corrections in polarized SIDIS, including infrared divergence cancellation and the exclusive radiative tail contribution.

## Key findings

- Analytical expressions for radiative corrections are derived.
- Infrared divergences are successfully canceled using Bardin-Shumeiko method.
- Results are applicable in ultrarelativistic approximation.

## Abstract

The explicit exact analytical expressions for the lowest-order radiative corrections to the semi-inclusive deep inelastic scattering of the polarized particles are obtained in the most compact, covariant form convenient for the numerical analysis. The infrared divergence from the real photon emission is extracted and cancelled using the Bardin-Shumeiko approach. The contribution of the exclusive radiative tail is presented.The analytic results obtained within the ultrarelativistic approximation are also show.