Regular Article – Experimental Physics
Relativistic Langevin dynamics: charm versus beauty
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
3 Nano Optical Material and Storage Device Research Center, School of Electronic and Electrical Engineering, Wuhan Textile University, 430200, Wuhan, China
Accepted: 24 November 2020
Published online: 3 December 2020
The production of heavy quarks (charm and beauty) provides unique insights into the transport properties of the Quark–Gluon Plasma (QGP) in heavy-ion collisions. Experimentally, the nuclear modification factor and the azimuthal anisotropy coefficient of heavy-flavor mesons are powerful observables to study the medium-related effects, such as energy loss and collectivity, on the heavy quark propagation through the QGP evolution. The latest measurements of the prompt and non-prompt open heavy-flavor hadrons allow a systematic comparison of the transport behaviors probed by charm and beauty quarks. In this work we make such an attempt utilizing our recently developed framework. By performing a quantitative investigation of and , it is found that both charm and beauty quarks are efficient probes to capture the dynamical features of QGP, in particular the resulting mass hierarchy for the energy loss and azimuthal anisotropy, which are well inherited by the various D/B-meson species. Moreover, our calculations can describe simultaneously and data for the prompt and non-prompt mesons in central () and semi-central () Pb–Pb collisions at . The predictions for B-meson observables for upcoming experimental tests are also made down to the low momentum region.
© The Author(s) 2020
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