中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

Heavy flavor quarks ($c$, $b$) are produced dominantly by the interactions of the initial incoming partons, and thus experience the entire evolution of the hot and dense medium created in high-energy nuclear collisions. Therefore, charm and bottom quarks are considered as an excellent probe to study the properties of the Quark-Gluon Plasma (QGP). In this talk, we will report recent STAR measurements of open charm hadron production through full invariant mass reconstruction ($D^0$, $D^\pm$, $D_s^+$, $\Lambda_c^+$) and open bottom hadron production through their displaced decay daughters ($b \rightarrow D^{0},~e$) in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV. The measurements of $D^0$, $D^\pm$, $b \rightarrow D^{0}$, $c/b \rightarrow e$ nuclear modification factors, $D_s^+/D^0$, $\Lambda_c^+/D^0$ ratios, and $D^0$, $c/b \rightarrow e$ directed, elliptic flow will be discussed in context of heavy flavor quark energy loss, transport in the QGP and final hadronization.