Properties of structure functions from helicity components\\ of light quarks and antiquarks in the statistical model

TL;DR

This paper explores the properties of structure functions derived from helicity components of light quarks and antiquarks within a quantum statistical model, revealing new relations and making predictions for future experiments.

Contribution

It introduces a novel statistical approach to analyze quark and antiquark structure functions, including polarized and unpolarized distributions, and proposes a toy model for gluons based on quark-antiquark pairs.

Findings

Identification of specific properties of structure functions from helicity components.

Determination of thermodynamical potentials influencing parton distributions.

Predictions for large-x region structure functions for upcoming experiments.

Abstract

In the quantum statistical parton distributions approach proposed more than one decade ago to describe the parton structure, new properties are now understood, in particular, the relation between quarks and antiquarks which leads to very specific properties. The simultaneous treatment of unpolarized and polarized Parton Distribution Functions (PDFs) allows a determination of thermodynamical potentials (the master parameters of the model) which drive their behavior and as a consequence those of the structure functions. The existence of a possible relation between the gluon and a $q~\bar q$ pair leads to define a toy model for the unpolarized and polarized gluon. In view of forthcoming experimental results in the large $x$ region specific predictions made by the model are presented.