Charmed hadron production at low transverse momentum in Au+Au collisions at RHIC

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We report measurements of charmed hadron production from hadronic ($D^{0}\rightarrow K\pi$) and semileptonic ($\mu$ and $e$) decays in 200 GeV Au+Au collisions at RHIC.

• Analysis of the spectra indicates that charmed hadrons have a different radial flow pattern from light or multi-strange hadrons.
• Charm cross sections at mid-rapidity are extracted by combining the three independent measurements, covering the transverse momentum range that contributes to $\sim$90% of the integrated cross section.
• The cross sections scale with number of binary collisions of the initial nucleons, a signature of charm production exclusively at the initial impact of colliding heavy ions.