# Measurements of open charm hadron production in Au+Au Collisions at $\sqrt{s_{\rm{NN}}}$ = 200 GeV at STAR

## TL;DR

This paper presents detailed measurements of open charm hadron production in gold-gold collisions at 200 GeV, revealing insights into charm quark behavior in quark-gluon plasma using advanced reconstruction and machine learning techniques.

## Contribution

It introduces the first measurements of $\\Lambda_{c}^{\pm}$ production dependence on centrality and transverse momentum in Au+Au collisions at 200 GeV, utilizing a supervised machine learning approach.

## Key findings

- First measurement of $\\Lambda_{c}^{\pm}$ production dependence on centrality and pT.
- Precise $D^{0}$ yields over a wide pT range down to 0.
- Total charm quark cross section extracted from the data.

## Abstract

We report on the measurements of production of various charmed hadrons in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 200 GeV (including $D^{0}(\overline{D^{0}})$ and $\Lambda_{c}^{\pm}$) obtained via topological reconstruction, utilizing the Heavy Flavor Tracker at STAR. Precise results on the $D^{0}$ yields from the 2014 data are reported for a wide transverse momentum range down to 0 in various centrality bins. With the high-statistics data collected in 2014 and 2016, and the usage of a supervised machine learning algorithm for signal-to-background separation, the first measurement of the centrality and transverse momentum dependences of $\Lambda_{c}^{\pm}$ production is shown. Finally, the total charm quark cross section extracted from these measurements in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 200 GeV is presented.