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

Abstract

The multiplicity distribution of charged particles produced in the central rapidity ($|\hat{I}\cdot |<2.5$) 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.

5 pages, 3 figures, some clarifications and references added. Accepted for publication in Phys. Rev. D