Does diffraction cone shrinkage with energy originate from unitarity?

TL;DR

This paper suggests that the observed shrinkage of the diffraction cone with increasing energy can be explained solely by unitarization effects, without needing to assume it at the initial amplitude level.

Contribution

It demonstrates that diffraction cone shrinkage may originate from unitarity constraints alone, challenging previous assumptions about its fundamental cause.

Findings

Diffraction cone shrinkage can result from unitarization effects.

No need to introduce shrinkage at the input amplitude.

Unitarity may fully account for observed phenomena.

Abstract

We note that the diffraction cone shrinkage might result from unitarization only, i.e. there is no need to introduce it into an input amplitude ab initio.