Soft Colour Interactions in Non-perturbative QCD

TL;DR

This paper discusses soft colour exchange models in non-perturbative QCD, explaining diverse high-energy collision outcomes and matching experimental data on rapidity gaps and heavy quarkonium production.

Contribution

It introduces a unified soft colour exchange framework that describes various final states in high-energy collisions, aligning with experimental observations.

Findings

Reproduces rapidity gap phenomena in ep and ppbar collisions.

Accurately predicts high-p_T charmonium and bottomonium production rates.

Provides a non-perturbative QCD model consistent with experimental data.

Abstract

Improved understanding of non-perturbative QCD dynamics can be obtained in terms of soft colour exchange models. Their essence is the variation of colour string-field topologies giving a unified description of final states in high energy interactions. In particular, both events with and without large rapidity gaps are obtained in agreement with data from ep at HERA and ppbar at the Tevatron, where also the surprisingly large production rate of high-p_T charmonium and bottomonium is reproduced.