Q2-evolution of parton densities at small-x values

TL;DR

This paper demonstrates that a Bessel-inspired behavior of the structure function F2 at small x, derived from DGLAP evolution with specific coupling assumptions, aligns well with HERA deep inelastic scattering data.

Contribution

It introduces a Bessel-inspired approach within the DGLAP framework for small-x parton densities, incorporating 'frozen' and analytic coupling constants.

Findings

Good agreement with HERA data for F2 at small x

Bessel-inspired behavior effectively models structure functions

Validates the leading twist approximation with specific coupling assumptions

Abstract

In the leading twist approximation of the Wilson operator product expansion with "frozen" and analytic strong coupling constants we show that Bessel-inspired behavior of the structure function F2 at small x, obtained for a flat initial condition in the DGLAP evolution equations, leads to good agreement with the deep inelastic scattering experimental data from HERA.