Studying QGP transport properties in a concurrent minijet+hydro framework

TL;DR

This paper investigates how minijets influence the transport properties of quark-gluon plasma (QGP) by integrating them into hydrodynamic models, revealing their significant impact on particle multiplicity and medium characteristics.

Contribution

It introduces a concurrent jet+hydro framework that incorporates minijets into QGP simulations, highlighting their role in modifying transport property estimates.

Findings

Minijets contribute significantly to particle multiplicity in heavy-ion collisions.

Energy deposition from minijet-medium interactions alters inferred QGP transport properties.

Inclusion of minijets improves the accuracy of hydrodynamic models in describing experimental data.

Abstract

Minijets are ubiquitous in heavy-ion collision experiments. However, they are often excluded from the hydrodynamic simulations of QGP as they do not thermalize at short time scales and are not treated as part of the collective medium. Using a concurrent jet+hydro framework, we show that the minijets could account for a significant portion of particle multiplicity. Therefore, the energy deposition from minijet-medium interactions can substantially modify the QGP transport properties inferred from model-to-data comparisons.