Nuclear Modification Factor of D0 Meson in Au plus Au Collisions at,√SNN=200 GeV

被引：20
|
作者：
Xie, Guannan [1 ]
机构：
[1] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
来源：
NUCLEAR PHYSICS A | 2016年 / 956卷
基金：
中国国家自然科学基金;
关键词：
Quark-gluon plasma; Nuclear modification factor; Heavy Flavor Tracker;
D O I：
10.1016/j.nuclphysa.2016.01.046
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Heavy-flavor quarks are dominantly produced in initial hard scattering processes and experience the whole evolution of the system in heavy-ion collisions at RHIC energies. Thus they are suggested to be an excellent probe to the medium properties through their interaction with the medium. In this proceedings, we report our first measurement of D-0 production via topological reconstruction using STAR's recently installed Heavy Flavor Tracker (HFT). We also report our new measurement of Nuclear Modification Factor (R-AA) of D-0 mesons in central Au+Au collisions at root S-NN = 200 GeV as a function of transverse momentum (p(T)). New results confirm the strong suppression at high Pr with a much improved precision, and show that the R-AA at high p(T) are comparable with light hadrons (pi) and with D meson measurements at the LHC. Furthermore, several theoretical calculations are compared to our data, and with charm diffusion coefficient 2 pi TDs similar to 2-12 can reproduce both the D-0 R-AA and v(2) data in Au+Au collisions at RHIC.
引用
收藏
页码：473 / 476
页数：4
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