https://doi.org/10.1140/epjc/s10052-021-09339-7
Regular Article - Theoretical Physics
Langevin dynamics of heavy quarks in a soft-hard factorized approach
1
College of Science, China Three Gorges University, 443002, Yichang, China
2
Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, 430079, Wuhan, China
Received:
18
April
2021
Accepted:
13
June
2021
Published online:
22
June
2021
By utilizing a soft-hard factorized model, which combines a thermal perturbative description of soft scatterings and a perturbative QCD-based calculation for hard collisions, we study the energy and temperature dependence of the heavy quark diffusion coefficients in Langevin dynamics. The adjustable parameters are fixed from the comprehensive model-data comparison. We find that a small value of the spatial diffusion coefficient at transition temperature is preferred by data 
. With the parameter-optimized model, we are able to describe simultaneously the prompt 
and 
data at 
GeV in Pb–Pb collisions at 
and 
TeV. We also make predictions for non-prompt meson for future experimental tests down to the low momentum region.
© The Author(s) 2021
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3
