AAMQS: a non-linear QCD description of new HERA data at small-x

TL;DR

This paper develops a non-linear QCD model using the dipole formulation and BK equation to analyze small-x HERA data, successfully describing recent measurements and exploring deviations from traditional NLO-DGLAP predictions.

Contribution

It introduces a novel non-linear QCD approach based on the BK equation to describe small-x DIS data, extending the understanding beyond linear evolution models.

Findings

Successfully describes recent HERA FL data

Identifies kinematic regions with deviations from NLO-DGLAP

Demonstrates the relevance of non-linear physics at small-x

Abstract

We present a global analysis of available data on inclusive structure functions measured in electron-proton scattering at small values of Bjorken-x, including the latest data from the combined HERA analysis on reduced cross sections. Our approach relies on the dipole formulation of DIS together with the use of the non-linear running coupling BK equation for the description of the small-x dynamics. With the resulting parametrization we are able to describe the latest FL data measured by the H1 collaboration. Further, we discuss the kinematical domain where significant deviations from NLO-DGLAP should be expected and the ability of non-linnear physics to account for such deviations.