Multiplicity distributions in proton-(anti)proton and electron-positron collisions with parton recombination

TL;DR

This paper introduces a new phenomenological model using generalized hypergeometric distribution to describe charged particle multiplicity distributions in high-energy proton-(anti)proton and electron-positron collisions, emphasizing the role of parton recombination.

Contribution

It presents a novel approach incorporating parton recombination processes into a generalized hypergeometric distribution for better data description.

Findings

Soft multiparton recombination processes are significant at very high energies.

The model fits data from CMS, ALICE, and ATLAS collaborations.

Parton recombination influences the structure of multiplicity distributions.

Abstract

A new approach to phenomenological description of the charged particle multiplicity distributions in proton-(anti)proton and electron-positron collisions is presented. The observed features of the data are interpreted on the basis of stochastic-physical ideas of multiple production. Besides the processes of parton immigration and absorption, two and three patron incremental and decremental recombinations are considered. The complex behaviour of the multiplicity distributions at different energies is described by four parametric generalized hypergeometric distribution (GHD). Application of the proposed GHD to data measured by the CMS, ALICE, and ATLAS Collaborations suggests that soft multiparton recombination processes can manifest itself significantly in the structure of multiplicity distribution in pp interactions at very high energies.