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Pre-equilibrium charm quark dynamics and their impact on D-Meson observables

Manu Kurian, Mayank Singh, Charles Gale, Sangyong Jeon, Björn Schenke

Abstract

We study the impact of pre-equilibrium evolution on the charm quark $R_{AA}$ and $v_2$ in Pb+Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. We observe that there is significant diffusion in the pre-equilibrium evolution, but there is no measurable effect on the final state observables.

Pre-equilibrium charm quark dynamics and their impact on D-Meson observables

Abstract

We study the impact of pre-equilibrium evolution on the charm quark and in Pb+Pb collisions at = 5.02 TeV. We observe that there is significant diffusion in the pre-equilibrium evolution, but there is no measurable effect on the final state observables.

Paper Structure

This paper contains 7 sections, 1 equation, 3 figures.

Table of Contents

  1. Introduction
  2. Model Setup
  3. Bulk medium
  4. Charm production
  5. Charm propagation
  6. Hardronization
  7. Results and discussion

Figures (3)

  • Figure 1: Charm quark positions in the background medium at $\tau =$ 1.5 fm at midrapidity.
  • Figure 2: Impact of charm quark pre-equilibrium evolution on D-meson $R_{AA}$. Experimental data taken from ALICE:2021rxaALICE:2020iug.
  • Figure 3: Impact of charm quark pre-equilibrium evolution on D-meson $v_2$. Experimental data taken from ALICE:2021rxaALICE:2020iug.