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

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.