Recent Developments in the Lund Model

TL;DR

This paper reviews recent advances in the Lund Model, focusing on string fragmentation, multi-gluon string fragmentation, and the scaling properties of partonic states, linking parton showers to hadronization outcomes.

Contribution

It introduces a new formulation of multi-gluon string fragmentation as a set of plaquettes and explores scaling properties connecting parton showers to hadronization.

Findings

Fragmentation can be formulated as plaquettes between hadronic curve and directrix.

Scaling properties of partonic states influence final hadron distributions.

Connections between parton shower algorithms and hadronization are elucidated.

Abstract

A brief introduction to the String Fragmentation Model and its consequences is presented. We discuss the fragmentation of a general multi-gluon string and show that it can be formulated as the production of a set of ''plaquettes'' between the hadronic curve and the directrix. We also discuss certain interesting scaling properties of the partonic states obtained from standard parton shower algorithms like those in Pythia and Ariadne, which are communicated to the final state hadrons obtained through our hadronisation procedure.