Some Problems of Diffraction at High Energies

TL;DR

This paper discusses the complex interplay of perturbative and nonperturbative effects in high-energy diffraction, highlighting the dominance of string-like dynamics in pion charge exchange and examining shadowing effects from triple-pomeron interactions.

Contribution

It provides new insights into the dominance of nonperturbative string-like dynamics at high energies and analyzes shadowing effects in diffraction processes.

Findings

Nonperturbative string-like dynamics dominate at high energies.

Shadowing effects from triple-pomeron interactions are significant.

Experimental data supports nonperturbative effects up to large momentum transfer.

Abstract

An interplay of perturbative and nonperturbative effects in pomeron, odderon and reggeons dynamics is discussed. It is pointed out that experimental data on pion charge exchange reaction at high energies indicate to a dominance of the nonperturbative string-like dynamics up to rather large momentum transfer. Role of shadowing effects related to triple-pomeron interactions is investigated.