Speaker
Description
One of the goals of heavy-ion collisions is to search for the Quark-Gluon Plasma (QGP) and study its properties. Due to their large masses, heavy quarks are mainly produced in the initial hard scatterings during the early stage of heavy-ion collisions and experience the entire space-time evolution of the system. At the STAR experiment, utilizing high-precision secondary vertex reconstruction provided by the Heavy Flavor Tracker (HFT), $D^{0}$ mesons have been comprehensively studied to investigate the charm quark transport in the QGP. Measurement of $D^{*\pm}$ production is complementary to the $D^{0}$ measurement in studying the medium modification to the open charm meson production. It also provides useful information on feed-down contributions to the $D^{0}$ yields.
In this poster, measurement of $D^{*\pm}$ production at mid-rapidity ($|y|<1$) in Au+Au collisions at $\sqrt{s_{_{\rm NN}}}$ = 200 GeV is reported. $D^{*\pm}$ are reconstructed via the hadronic decay channel ($D^{*+}\rightarrow D^{0}\pi^{+}$, $D^{0}\rightarrow K^{-}\pi^{+}$, and its charge conjugate channel) utilizing the STAR HFT detector. The invariant yields of $D^{*\pm}$ and the ratios of $D^{*\pm}/D^{0}$ yields will be shown as a function of transverse momentum in different centralities. The nuclear modification factor ($R_{AA}$) for $D^{*\pm}$ will be presented as well, and physics implications will be discussed.
| Content type | Experiment |
|---|---|
| Collaboration | STAR |
| Centralised submission by Collaboration | Presenter name already specified |
