meson production in Au+Au collisions at in STAR

16th International Conference on Strangeness in Quark Matter

Zhou, Long^1

University of Science and Technology of China, #96 Jinzai road, Hefei, Anhui, China^1

关键词: Au+Au collisions;    Elliptic flows;    Hadronization;    Measurements of;    Meson production;    Nuclear modification factors;    Quark-gluon plasma;    STAR experiment;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/779/1/012028/pdf
DOI  :  10.1088/1742-6596/779/1/012028

来源: IOP

【 摘 要 】

In this article, we report the measurements of the nuclear modification factor (RAA) and elliptic flow (v2) for D±sin Au+Au collisions at √sNN= 200 GeV from the STAR experiment. These results are compared with the results of other open charm mesons to study the hadronization mechanism of the charm quarks and disentangle the transport properties of quark-gluon plasma and hadronic phase [1]. We found that the nuclear modification factor for Dsare systematically higher than unity and D0RAA. The ratio of Ds/D0for 10-40% central Au+Au collisions is also higher than that in p+p collisions as predicted by PYTHIA. The Ds/D0ratio is also compared to that in Pb+Pb collisions at √sNN= 2.76 TeV measured by the ALICE experiment. Our results indicate an enhancement of Dsmeson production in Au+Au collisions.