Multi-strange hadrons and the precision extraction of QGP properties in the RHIC-BES domain

TL;DR

This paper uses a hybrid model and Bayesian analysis to study multistrange hadrons in heavy ion collisions, aiming to better understand the quark-gluon plasma and hadronic phase transition at RHIC energies.

Contribution

It introduces the inclusion of multistrange hadron observables into Bayesian analysis to improve QGP property extraction in heavy ion collisions.

Findings

Multistrange hadrons significantly influence Bayesian analysis outcomes.

$oldsymbol{ ext{phi}}$ and $oldsymbol{ ext{Omega}}$ are viable probes of the QGP-hadronic transition.

Final state interactions modify the transverse momentum spectra of $ ext{phi}$ and $ ext{Omega}$.

Abstract

We systematically compare an event-by-event transport+viscous hydrodynamics hybrid model to data from the RHIC beam energy scan using a general Bayesian method. We demonstrate how the inclusion of multistrange hadron observables affects the outcome of the Bayesian analysis and conduct an in depth analysis of the viability of $\phi$ and $\Omega$ as probes of the transition region between a deconfined quark-gluon plasma and hadronic phase in heavy ion collisions at higher-end RHIC collision energies. Utilizing UrQMD to model the final hadronic interactions, we examine the collision rates of $\phi$ and $\Omega$ and the modification to their transverse momentum spectra due to these interactions.