# Testing collinear factorization in a spectator model with mass corrections

## TL;DR

This paper investigates the validity of collinear factorization with hadron mass corrections in deep inelastic scattering using a spectator model, aiming to improve theoretical predictions for kaon production at moderate energies.

## Contribution

It introduces a spectator model calculation to test the applicability of hadron mass corrections in collinear factorization for DIS processes.

## Key findings

- Preliminary results support the use of HMCs in certain kinematic regimes.
- The model helps identify limitations of current factorization assumptions.
- Findings guide future semi-inclusive process analyses.

## Abstract

In perturbative QCD, the masses of the hadrons involved in high energy reactions can usually be neglected. However, in the case of Kaon production in electron-proton collisions at low (and not so low) beam energies this may not be a good approximation. In particular, a recent proposal to include hadron masses in theoretical calculations shows how these Hadron Mass Corrections (HMCs) can explain a large discrepancy observed in measurements performed at the HERMES and COMPASS experiments. In this talk, we present preliminary results of a spectator model calculation designed to test the range of validity of the approximations needed in the proposed factorization scheme. We focus on inclusive DIS scattering as a first step towards the analysis of HMCs in semi-inclusive processes.