Speaker
Description
Heavy flavor quarks are unique tools for studying the properties of the Quark Gluon Plasma (QGP) produced in high-energy nuclear collisions. In this talk we will present measurements of various charm hadrons ($\Lambda^{\pm}_{c}$, $D^{\pm}_{s}$, $D^{*\pm}$, $D^{\pm}$ and $D^0$ ($\bar{D}^0$), as well as open bottom production through displaced decay daughters ($B\rightarrow J/\psi$, $D^0$, $e$), at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV, using the STAR Heavy Flavor Tracker. With the high statistics data collected in 2016 and the use of supervised machine learning methods for topological reconstruction of charm hadrons, the $\Lambda^{\pm}_{c}$ and $D^{\pm}_{s}$ signal significances are improved significantly. This allows us to study the $p_T$ and centrality dependences of their production. We will also report on $D^{*\pm}$, $D^{\pm}$ and $D^0$ spectra measured in various centralities and the total charm quark cross section extracted from these extensive measurements as well. In addition, we will present the nuclear modification factors for daughters from decays of bottom hadrons and compare them to those for charm hadrons as well as to theoretical calculations. Physics implications of these measurements for the mass dependences of parton interactions with the QGP, as well as the charm quark hadronization in the medium will be discussed.
| Content type | Experiment |
|---|---|
| Collaboration | STAR |
| Centralised submission by Collaboration | Presenter name already specified |
