Interactions between heavy quarks and tilted QGP fireballs in 200 A GeV Au+Au collisions  

作　　者：江泽方 曹杉杉 邢文静 李晓雯 张本威 Ze-Fang Jiang;Shanshan Cao;Wen-Jing Xing;Xiaowen Li;Ben-Wei Zhang(Department of Physics and Electronic-Information Engineering,Hubei Engineering University,Xiaogan 432000,China;Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics(MOE),Central China Normal University,Wuhan 430079,China;Institute of Frontier and Interdisciplinary Science,Shandong University,Qingdao 266237,China;Guangdong Provincial Key Laboratory of Nuclear Science,Institute of Quantum Matter,South China Normal University,Guangzhou 510006,China)

机构地区：[1]Department of Physics and Electronic-Information Engineering,Hubei Engineering University,Xiaogan 432000,China [2]Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics(MOE),Central China Normal University,Wuhan 430079,China [3]Institute of Frontier and Interdisciplinary Science,Shandong University,Qingdao 266237,China [4]Guangdong Provincial Key Laboratory of Nuclear Science,Institute of Quantum Matter,South China Normal University,Guangzhou 510006,China

出　　处：《Chinese Physics C》2023年第2期165-173,共9页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China (11935007, 12175122, 2021-867);Guangdong Major Project of Basic and Applied Basic Research (2020B0301030008);Natural Science Foundation of Hubei Province (2021CFB272);Education Department of Hubei Province of China with Young Talents Project (Q20212703);Open Foundation of Key Laboratory of Quark and Lepton Physics (MOE)(QLPL202104);Xiaogan Natural Science Foundation(XGKJ2021010016)。

摘　　要：Heavy quark observables are applied to probe the initial energy density distribution with violation of longitudinal boost invariance produced in relativistic heavy-ion collisions.Using an improved Langevin model coupled to a(3+1)-dimensional viscous hydrodynamic model,we study the nuclear modification factor(R_(AA)) and directed flow(v_(1)) and elliptic flow(v_(2)) coefficients of heavy mesons and their decayed electrons at an RHIC energy.We find that the counter-clockwise tilt of nuclear matter in the reaction plane results in a positive(negative) heavy flavor vi in the backward(forward) rapidity region,whose magnitude increases with the heavy quark transverse momentum.The difference in the heavy flavor R_(AA) between different angular regions is also proposed as a complementary tool to characterize the asymmetry of the medium profile.Our model results are consistent with currently available data at the RHIC and provide predictions that can be tested by future measurements.

关 键 词：heavy ion collisions quark gluon plasma directed flow v_(1) heavy quarks 

分 类 号：O572.33[理学—粒子物理与原子核物理]