Hadronic electromagnetic form factors and color transparency

TL;DR

This paper reviews the status of electromagnetic form factor calculations in perturbative QCD, emphasizing the importance of transverse coordinate factorization and presenting the first explicit perturbative calculations of color transparency and nuclear filtering.

Contribution

It introduces a more appropriate factorization approach involving transverse coordinates and provides the first explicit perturbative calculations of color transparency and nuclear filtering.

Findings

Transverse coordinate factorization is favored over previous prescriptions.

Color transparency can be described within the perturbative formalism.

First explicit calculations of color transparency and nuclear filtering are presented.

Abstract

We review the current status of electromagnetic form factor calculations in perturbative QCD. There is growing evidence that factorization prescriptions involving a transverse coordinate integration, such as that of Li and Sterman, are more appropriate than the prescription of LePage and Brodsky. Color transparency is naturally described within the formalism. We report the first explicit calculations of color transparency and nuclear filtering as perturbatively calculable phenomena.