Abstract
Charm quarks are primarily produced at the early stages of ultra-relativistic heavy-ion collisions and can therefore probe the quark-gluon plasma throughout its whole evolution. Final-state open-charm hadrons are commonly used to experimentally study the charm quark interaction with the medium. Thanks to the excellent secondary vertex resolution provided by the Heavy Flavor Tracker, STAR is able to directly reconstruct D ± , D 0 , D s , and Λ c ± via their hadronic decay channels. The topological cuts for signal extraction are optimized using supervised machine learning techniques. In these proceedings, we present an overview of recent open charm results from the STAR experiment. The nuclear modification factors of open-charm mesons and Λ c ± /D 0 ratio are shown as functions of transverse momentum and collision centrality.
Highlights
At RHIC energies, charm and bottom quarks are produced predominantly through hard partonic scatterings at the early stage of a heavy-ion collision
We present an overview of recent open charm results from the STAR experiment
Most open-charm hadrons observed at RHIC come from hadronization of primordial charm quarks or decays of b-hadrons
Summary
At RHIC energies, charm and bottom quarks are produced predominantly through hard partonic scatterings at the early stage of a heavy-ion collision. Most open-charm hadrons observed at RHIC come from hadronization of primordial charm quarks or decays of b-hadrons. This makes them an ideal probe of the Quark-Gluon Plasma (QGP) because they experience the entire evolution of the. These new measurements will provide insights into phenomena, such as the energy loss of partons inside the QGP and the hadronization process.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
