High-Energy Limit of Quantum Electrodynamics beyond Sudakov Approximation

TL;DR

This paper investigates the high-energy behavior of QED scattering amplitudes beyond the Sudakov approximation, revealing how mass-suppressed double-logarithmic corrections influence amplitude enhancement and discussing implications for QCD processes.

Contribution

It introduces the analysis of mass-suppressed double-logarithmic radiative corrections in high-energy QED beyond the Sudakov approximation, highlighting their origin and impact.

Findings

Mass-suppressed double-logarithmic corrections are induced by soft electron pair exchange.

These corrections lead to an enhancement of power-suppressed contributions.

Potential applications to high-energy QCD processes are discussed.

Abstract

We study the high-energy behavior of the scattering amplitudes in quantum electrodynamics beyond the leading order of the small electron mass expansion in the leading logarithmic approximation. In contrast to the Sudakov logarithms, the mass-suppressed double-logarithmic radiative corrections are induced by a soft electron pair exchange and result in enhancement of the power-suppressed contribution. Possible applications of our result to the analysis of the high-energy processes in quantum chromodynamics is also discussed.