Heavy flavor quenching and flow:the roles of initial condition,pre-equilibrium evolution,and in-medi

• 作 者: Shu-Qing Li Wen-Jing Xing Feng-Lei Liu Shanshan Cao Guang-You Qin
• 机 构: Department of Physics and Information Engineering,Jining University,Qufu 273155,China;Institute of P
• 出 处: 中国物理C（英文版）
• 发表日期: 2020年11期
• 关键词: quark-gluon plasma heavy-ion collisions jet quenching heavy quark

Within an advanced Langevin-hydrodynamics framework coupled to a hybrid fragmentation-coalescence hadronization model,we study heavy flavor quenching and flow in relativistic heavy-ion collisions.We investigate how the initial heavy quark spectrum,the in-medium energy loss and hadronization mechanisms of heavy quarks,the evolution profile of the pre-equilibrium stage,the medium flow,and the temperature dependence of heavy quark dif-fusion coefficients influence the suppression and elliptic flow of heavy mesons at the RHIC and the LHC.Our results show that the different modeling of initial conditions,pre-equilibrium evolution,and in-medium interactions can indi-vidually yield uncertainties of approximately 10-40％in D meson suppression and flow at a low transverse mo-mentum.We also find that proper combinations of collisional versus radiative energy loss,coalescence versus frag-mentation in hadronization,and the inclusion of medium flow are the most important factors for describing the sup-pression and elliptic flow of heavy mesons.