Heavy flavor electron $R_\text{AA}$ and $v_2$ in event-by-event relativistic hydrodynamics

TL;DR

This study uses event-by-event hydrodynamic simulations to analyze how fluctuations influence the suppression and flow of heavy flavor particles in heavy-ion collisions, matching experimental data and predicting higher harmonic coefficients.

Contribution

It introduces a detailed event-by-event hydrodynamic approach combined with a strong coupling energy loss model to study heavy flavor observables in heavy-ion collisions.

Findings

Reproduces experimental $R_{AA}$ and $v_2$ data for heavy flavor electrons.

Predicts higher order flow harmonics $v_3(p_T)$ for heavy-flavor electrons at RHIC.

Highlights the impact of hydrodynamic fluctuations on heavy flavor observables.

Abstract

In this work we investigate how event-by-event hydrodynamics fluctuations affect the nuclear suppression factor and elliptic flow of heavy flavor mesons and non-photonic electrons. We use a 2D+1 Lagrangian ideal hydrodynamic code on an event-by-event basis in order to compute local temperature and flow profiles. Using a strong coupling inspired energy loss parametrization on top of the evolving space-time energy density distributions we are able to propagate the heavy quarks inside the medium until the freeze-out temperature is reached and a Pythia modeling of hadronization takes place. The resulting D$^0$ and heavy-flavor electron yield is compared with recent experimental data for $R_\text{AA}$ and $v_2$ from the STAR and Phenix collaborations. In addition we present preditions for the higher order Fourier harmonic coefficients $v_3(p_T)$ of heavy-flavor electrons at RHIC's $\sqrt{S_\text{NN}} = 200$ GeV collisions.