Too heavy to be moved.

We present a study of beauty and charm isolation based on a data driven method with recent heavy flavor hadrons and their decay electron measurements in Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 200 GeV at RHIC. The individual electron transverse momentum spectra, $R_{\rm AA}$ and $v_2$ distributions from charm and beauty decays are obtained. We found that the electron $R_{\rm AA}$ from beauty decays ($R_{\rm AA}^{\rm b\rightarrow e}$) are suppressed in minimum bias Au+Au collisions but less suppressed compared with that from charm decays at $p_T$ $>$ 3.5 GeV/$c$, which indicates that beauty interacts with the hot-dense medium with depositing its energy and is consistent with the mass-dependent energy loss scenario. And the first time, the non-zero electron $v_2$ from beauty decays ($v_{2}^{\rm b\rightarrow e}$) at $p_T$ $>$ 3.0 GeV/$c$ is observed and shows smaller flow compared with that from charm decays at $p_T$ $<$ 4.0 GeV/$c$. At 2.5 $<$ $p_T$ $<$ 4.5 GeV/$c$, $v_{2}^{\rm b\rightarrow e}$ is smaller than a number-of-constituent-quark (NCQ) scaling hypothesis, which indicates that beauty quark is unlikely thermalized and too heavy to be moved in a partonic collectivity in heavy-ion collisions at RHIC energy.