Advanced Physical Research

ISSN Print: 2663-8436

ISSN Online: 3105-3548

Advanced Physical Research is an open access Journal, publishing fully peer-reviewed original and review papers as well as brief reports on topics in all areas of theoretical and applied physics. The journal provides a platform for researchers who wish to summarize a field of physics research and share this work as widely as possible. The published papers provide an overview of the main developments on a particular topic, with an emphasis on recent developments, and sketch an outlook on future developments.

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Electromagnetic Radiation in the Coulomb-Nuclear Interference Region of Proton-Proton Scattering

Published: 08-06-2026

https://doi.org/10.62476/apr82270

Abstract

In this paper, we investigate the influence of the Coulomb phase on the emission characteristics of soft photons in elastic proton–proton scattering in the Coulomb–nucleus interference (CNI) region at √s = 13 TeV. The scattering amplitude is represented as a coherent sum of the electromagnetic and hadronic contributions, with the Coulomb phase taken into account within the West-Yennie (WY) approach and the Yennie–Frautschi–Suura (YFS) leading logarithm approximation. In a simplified but realistic model, this effect manifests itself at the percent level in the CNI region and exhibits a logarithmic dependence on the threshold photon energy. These effects are important for the accurate analysis of high-energy experimental data.