Speaker
Description
The study of energy loss of quarks in the hot and dense medium has been performed for decades. Both the experimental and theoretical efforts hinted that the energy loss is quark mass dependent (the yield of heavier quarks will be less suppressed). It was found that the electrons from heavy quarks (charm, and bottom) are less or similarly suppressed compared to that of light hadrons. However, the mass ordering of the suppression between charm and bottom was not clear by now due to a large uncertainty in the measurement. We have fully exploited the events recorded at PHENIX from Au+Au collisions in the 2014 RHIC run. Combined with the new charm and bottom $p_{T}$ spectra from p+p collisions from the 2015 RHIC run, we can obtain the new $R_{AA}$ for charm and bottom quarks with smaller uncertainties. We will show the latest results on $p_{T}$ spectra and $R_{AA}$ of charm and bottom quarks separately, and discuss the quark mass dependence of the energy loss
