Small-X Behavior of Parton Densities at Low Q2 Values

TL;DR

This paper investigates the small-x behavior of parton densities at low Q2 using DGLAP evolution with different strong coupling models, showing good agreement with HERA data.

Contribution

It demonstrates that Bessel-inspired small-x behavior of the structure function aligns well with experimental data under various coupling assumptions.

Findings

Bessel-inspired behavior matches HERA data at small x

Both standard and frozen coupling models are effective

Good agreement achieved with flat initial conditions

Abstract

In the leading twist approximation of the Wilson operator product expansion with standard and "frozen" versions of strong copling constant we show that the Bessel-inspired behavior of the structure function $F_2$ at small $x$, obtained for a flat initial condition in the DGLAP evolution, leads to very good agreement with the deep inelastic scattering experimental data from HERA.