Schwinger-Dyson approach and generalized impulse approximation for the pi0 gamma^* gamma transition

TL;DR

This paper reviews the pion-photon transition form factor using the Schwinger-Dyson approach and impulse approximation, providing predictions up to 36 GeV^2 and discussing implications for understanding quark dressing.

Contribution

It introduces a new derivation of the asymptotic behavior of the form factor and extends theoretical predictions to higher energy scales.

Findings

Agreement with analytically inferred asymptotic behavior

Predictions for form factor up to 36 GeV^2

Potential insights into quark dressing from Jefferson Lab measurements

Abstract

We review the pion-photon transition form factor calculated in the Schwinger-Dyson approach and an impulse approximation. We present results for it far above the scales presently accessible for measurement, up to 36 GeV^2, and demonstrate agreement with the analytically inferred asymptotic behavior, for which we also provide a new derivation. We discuss how measurements at Jefferson Lab can provide information on how quarks are dynamically dressed.