# Behavior Of Very High Energy Hadronic Cross Sections

## TL;DR

This paper reviews the behavior of very high energy hadronic cross sections, explaining their slow approach to asymptotic limits through the concepts of a 'black disc' and an 'edge', influenced by the small pion mass.

## Contribution

It provides a theoretical review of high energy hadronic cross sections using the black disc and edge model, highlighting the role of pion mass in the approach to asymptopia.

## Key findings

- Cross sections approach asymptopia slowly due to the edge effect.
- The small pion mass influences the length or mass scales involved.
- The black disc model explains the energy dependence of hadronic interactions.

## Abstract

The understanding of very energy hadron cross sections in terms of a 'black disc' with an 'edge' is reviewed. The slow approach to 'Asymptopia' is explained by the 'Edge'. The disproportion of length or mass scales involved is probably due to the small pion massa.