Measurement of D 0 elliptic and triangular flow in Au+Au collisions at = 200 GeV at RHIC

16th International Conference on Strangeness in Quark Matter

Lomnitz, Michael R.^1

Nuclear Science Division, Lawrence Berkeley National Lab, MS70R0319, One Cyclotron Road, Berkeley

CA

94720, United States^1

关键词: Au+Au collisions;    Azimuthal anisotropy;    Bulk properties;    Heavy ion collision;    Model calculations;    Reaction plane;    Star measurements;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/779/1/012059/pdf
DOI  :  10.1088/1742-6596/779/1/012059

来源: IOP

【 摘 要 】

Due to their large masses, heavy quarks are predominantly produced through initial hard scatterings in heavy-ion collisions. As such, they experience the entire evolution of the hot and dense medium created in such collisions and are expected to thermalize much more slowly than light flavor quarks. For instance, the azimuthal anisotropy of charm quarks with respect to the reaction plane over a broad momentum range can provide insights into the degree of thermalization and the bulk properties of the system. Specifically at low transverse momenta we can examine the bulk properties in the strongly coupled regime. In this talk we present the STAR measurement of elliptic (v2) and triangular flow (v3) of D0mesons in Au+Au collisions at √sNN = 200 GeV obtained from the first year of physics running with the new STAR Heavy Flavor Tracker. Comparison with the azimuthal anisotropy of other particle species and a series of model calculations will be shown, and the charm quark dynamics in the sQGP medium will be discussed.