Multiplicity distributions in the eikonal and the $U$-matrix unitarization schemes

TL;DR

This paper compares multiplicity distributions in high-energy proton-proton collisions using eikonal and U-matrix unitarization schemes, finding that the eikonal approach aligns better with ATLAS 13 TeV data.

Contribution

It provides a comparative analysis of unitarization schemes for multiplicity distributions and validates the eikonal scheme against experimental data.

Findings

Eikonal scheme agrees better with ATLAS data.

U-matrix scheme less consistent with observed distributions.

Supports the use of eikonal unitarization in high-energy collision models.

Abstract

The multiplicity distribution of charged particles produced in the central rapidity ($|\eta|<2.5$) region is calculated for the eikonal and the $U$-matrix unitarization schemes using the AGK cutting rules and compared with the ATLAS 13 TeV data. The data favours the eikonal approach.