Measurement of the D⁰-meson elliptic and triangular flow in Au+Au collisions √s_NN = 200 GeV collisions from STAR

Azimuthal anisotropic flow coefficients (v_n) are valuable tools to study the Quark-Gluon Plasma (QGP) created in heavy ion collisions. Recent results from the STAR experiment show that in 10-40% central Au+Au collisions at the top RHIC energy the elliptic flow (v₂) of D⁰ mesons follow the Number-of-Constituent-Quark(NCQ) scaling in the same way as it does for light-flavor hadrons. This suggests that charm quarks have gained large collectivity through their interactions with the QGP medium.
In this talk, we present the centrality and transverse momentum dependencies of the D⁰-meson elliptic (v₂) and triangular (v₃) flow measured at mid-rapidity (|y|<1) in Au+Au collisions at √s_NN = 200 GeV by the STAR experiment. The measurement utilizes the STAR Heavy Flavor Tracker and the combined datasets recorded during RHIC 2014 and 2016 runs. The measured D⁰-meson v2 and v3 in various centrality bins are compared to those of light and strange hadrons to test the NCQ scaling. We also present the p_T-integrated D⁰-meson v₂ scaled by the initial eccentricity in different centralities and compare to those of light and strange hadrons. Results are also compared to model calculations and physics implications are discussed.