Cracking hadron and nuclear collisions open with ropes and string shoving in PYTHIA8

TL;DR

This paper discusses the implementation of non-perturbative mechanisms like string shoving and rope hadronization in PYTHIA8 to better simulate strangeness enhancement observed in high-energy nuclear collisions, aiming to improve modeling of QGP signatures.

Contribution

The paper introduces new implementations of string shoving and rope hadronization in PYTHIA8, advancing the simulation of QGP-related phenomena in particle collisions.

Findings

Preliminary results show increased strangeness yields in high-multiplicity collisions.

The new mechanisms improve the modeling of QGP signatures in simulations.

Ongoing development aims to refine these implementations.

Abstract

Enhancement in strangeness yields in heavy-ion collisions is regarded as one of the attributes of the Quark-Gluon Plasma (QGP) along with jet quenching and final-state collectivity. To reproduce these effects in the MC implementation of the Lund string model in \pythia, the inclusion of non-perturbative mechanisms like string shoving and rope hadronization is crucial. In this proceeding, we discuss our latest implementation of these mechanisms and the preliminary results for the strangeness enhancement in high-multiplicity p-p, p-Pb and Xe-Xe. We conclude with remarks on the ongoing development of the model.