Regular Article - Theoretical Physics
Langevin dynamics of heavy quarks in a soft-hard factorized approach
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
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
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