Quark distributions and gluon contents of eta and etaprime

TL;DR

This paper uses QCD sum rules to calculate the valence quark distributions of eta and eta' mesons in the chiral limit, comparing their moments with other hadrons to understand their internal structure.

Contribution

It provides the first calculation of eta and eta' valence quark distributions using QCD sum rules in the chiral limit, including their moments and comparison with other hadrons.

Findings

Calculated valence quark distribution functions for eta and eta'

Determined the first two moments of these distributions

Compared these moments with those of other hadrons

Abstract

Using QCD sum rule, we calculate valance quark distribution functions of {\eta} and of {\eta}' in chiral limit. Extrapolating the calculated quark distribution functions at both end regions, their first two moments have been calculated and compared with those of other hadrons.