Gluon polarization in the proton

TL;DR

This paper derives a theoretical bound on the gluon polarization in the proton by combining renormalization group arguments with nucleon wavefunction insights, aligning with experimental measurements.

Contribution

It introduces a novel theoretical bound on gluon polarization that complements and supports experimental findings.

Findings

The bound on Delta g is consistent with experimental data.

Theoretical approach combines renormalization group with nucleon wavefunction analysis.

Supports existing experimental measurements of gluon polarization.

Abstract

We combine heavy-quark renormalization group arguments with our understanding of the nucleon's wavefunction to deduce a bound on the gluon polarization Delta g in the proton. The bound is consistent with the values extracted from spin experiments at COMPASS and RHIC.