A4 Article in conference proceedings
Heavy quark diffusion coefficient during hydrodynamization : non-equilibrium vs. equilibrium (2024)

Peuron, J., Boguslavski, K., Kurkela, A., Lappi, T., & Lindenbauer, F. (2024). Heavy quark diffusion coefficient during hydrodynamization : non-equilibrium vs. equilibrium. In HardProbes2023: 11th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Article 091). Sissa Medialab. POS Proceedings of Science, 438. https://doi.org/10.22323/1.438.0091(external link)

JYU authors or editors

Publication details

All authors or editors: Peuron, Jarkko; Boguslavski, Kirill; Kurkela, Aleksi; Lappi, Tuomas; Lindenbauer, Florian

Parent publication: HardProbes2023: 11th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

Conference:

Place and date of conference: Aschaffenburg, Germany, 26.-31.3.2023

Journal or series: POS Proceedings of Science

eISSN: 1824-8039

Publication year: 2024

Publication date: 16/02/2024

Number in series: 438

Article number: 091

Publisher: Sissa Medialab

Publication country: Italy

Publication language: English

DOI: https://doi.org/10.22323/1.438.0091(external link)

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/95652(external link)

Publication is parallel published: https://arxiv.org/abs/2308.07169(external link)

Abstract

We compute the heavy quark momentum diffusion coefficient using effective kinetic theory for a system going through bottom-up isotropization until approximate hydrodynamization. We find that when comparing the nonthermal diffusion coefficient to the thermal one for the same energy density, the observed deviations throughout the whole evolution are within 30% from the thermal value. For thermal systems matched to other quantities we observe considerably larger deviations. We also observe that the diffusion coefficient in the transverse direction dominates at large occupation number, whereas for an underoccupied system the longitudinal diffusion coefficient dominates. Similarly, we study the jet quenching parameter, where we obtain a smooth evolution connecting the large values of the glasma phase with the smaller values in the hydrodynamical regime.

Keywords: particle physics; quark-gluon plasma

Contributing organizations

Related projects

Ministry reporting: Yes

VIRTA submission year: 2024

Preliminary JUFO rating: 0