Measurements of open heavy flavor in STAR experiment

被引：0

作者：

Ye, Zhenyu ^{[1
,2
]}

机构：

[1] Univ Illinois, Chicago, IL 60607 USA

[2] Cent China Normal Univ, Wuhan 430079, Peoples R China

来源：

NUCLEAR PHYSICS A | 2014年 / 932卷

关键词：

Quark-gluon plasma; Heavy-ion collisions; Heavy flavor; Nuclear modification factor; Elliptical flow;

D O I：

10.1016/j.nuclphysa.2014.09.097

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：

We present recent open heavy-flavor measurements performed with the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). The production cross sections of charm quarks in p+p collisions at root S = 200 and 500 GeV are determined through hadronic decay channels of D-0 and D*(+) mesons. These results are consistent with perturbative QCD calculations. Using p+p collisions as a reference, the nuclear modification factors R-AA of D-0 meson production are extracted from Au+Au collisions at root S-NN = 200 GeV and U-EU collisions at root S-NN = 193 GeV. Model calculations including charm medium interactions and hadronization via both fragmentation and coalescence describe the measured D-0 R-AA. Results are also reported on R-AA and elliptic flow v(2) of non-photonic electrons (NPE) from semileptonic decays of open heavy-flavor hadrons. None of the existing model calculations simultaneously describe the NPE R-AA and v(2). Finally we give an outlook for heavy-flavor measurements with the newly upgraded STAR detector. (C) 2014 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：45 / 50

页数：6

共 18 条

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