Nonperturbative aspects of the electromagnetic pion form factor at high energies

TL;DR

This paper develops a model to explore nonperturbative effects in the electromagnetic pion form factor at high energies, integrating dispersion relations, pion structure, gluonic exchanges, and quark Reggeization to understand deviations from perturbative QCD.

Contribution

It introduces a novel approach combining dispersion relations with nonperturbative dynamics, including quark Reggeization, to analyze the pion form factor at high energies.

Findings

Quark Reggeization can be studied through scaling violations in the form factor.

The model accounts for nonperturbative effects beyond standard perturbative QCD.

Insights into the high-energy behavior of hadronic form factors are provided.

Abstract

The structure of hadronic form factors at high energies and their deviations from perturbative quantum chromodynamics provide insight on nonperturbative dynamics. Using an approach that is consistent with dispersion relations, we construct a model that simultaneously accounts for the pion wave function, gluonic exchanges, and quark Reggeization. In particular, we find that quark Reggeization can be investigated at high energies by studying scaling violation of the form factor.