Hadronisation Models and Colour Reconnection

TL;DR

This paper reviews and compares models of hadronisation and colour reconnection in high-energy collisions, explaining enhanced strange hadron production and collective effects in small systems.

Contribution

It introduces and compares models of rope hadronisation and colour reconnection, highlighting their role in describing dense environment effects and collective phenomena.

Findings

Models successfully describe enhanced strange hadron production.

Transverse proton structure models influence correction sensitivity.

Corrections may explain collective phenomena in small systems.

Abstract

Enhanced production of hadrons with $s$-quark content has been observed in $pp$ collisions at LHC, and earlier in collisions of heavy nuclei. We review the string hadronisation formalism and correc- tions from rope hadronisation and colour reconnection, corrections that takes place in such dense environments, and are able to correctly describe data. Since such corrections are very sensitive to the modelling of transverse proton structure, we investigate two such models, and compare to final states. Finally we describe how such corrections can also give a possible explanation to collective phenomena observed in small systems.