Spin dependent structure function g_1 at low x and low Q^2

TL;DR

This paper presents a theoretical model for the spin-dependent structure function g_1 at low x and Q^2, combining Vector Meson Dominance and QCD extensions, and compares predictions with recent experimental data.

Contribution

It introduces a combined theoretical framework for g_1 at low x and Q^2, extending existing models to better match experimental observations.

Findings

The model successfully describes experimental data at low x and Q^2.

Inclusion of Vector Meson Dominance improves low Q^2 predictions.

QCD extensions enhance the understanding of spin structure functions.

Abstract

Theoretical description of the spin dependent structure function g_1(x,Q^2) in the region of low values of x and Q^2 is presented. It contains the Vector Meson Dominance contribution and the QCD improved parton model suitably extended to the low Q^2 domain. Theoretical predictions are compared with the recent experimental data in the low x, low Q^2 region.