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

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.

Comments: 6 pages, 9 figures, prepared for publication on SciPost Physics Proceedings as a proceeding of 50th International Symposium on Multiparticle Dynamics (ISMD2021)