Photoproduction total cross-sections at very high energies and the Froissart bound

TL;DR

This paper extends a QCD-based model for hadronic total cross-sections to photon-proton interactions, predicting a faster energy rise than in proton-antiproton collisions, and discusses implications for the Froissart bound.

Contribution

It applies a hadronic cross-section model to photoproduction, showing a stronger energy dependence than in hadronic cases, and explores the Froissart bound implications.

Findings

Photon-proton cross-section rises faster than proton-antiproton at high energies.

The model successfully describes the energy dependence of photoproduction cross-sections.

Implications for the Froissart bound in photon-induced processes.

Abstract

A previously successful model for purely hadronic total cross-sections, based on QCD minijets and soft-gluon resummation, is here applied to the total photoproduction cross section. We find that our model in the gamma p case predicts a rise with energy stronger than in the pp -pbarp case.