$D^{0}$ meson $v_{n}$ harmonics in PbPb collisions at $5.02~\mathrm{TeV}$

The Fourier coefficients $v_{2}$ and $v_{3}$, which reflect the azimuthal anisotropy of $D^0$ meson, is measured with scalar-product method in PbPb collisions at $\sqrt{s_\mathrm{NN}} = 5.02~\mathrm{TeV}$ with CMS. The measurement is done in a wide $p_T$ range up to $40~\mathrm{GeV}/c$, for centrality classes 0-10$\%$, 10-30$\%$ and 30-50$\%$. It is the first measurement on $D^0$ $v_{3}$ and the uncertainties on $D^0$ $v_{2}$ are significantly improved compared with previous measurements. The measured $D^0$ $v_{n}$ (n = 2, 3) is consistent with charged particle $v_{n}$ in central collisions, and begins to be lower than charged particles $v_{n}$ in $p_T$ range 1 to $6~\mathrm{GeV}/c$ for more peripheral collisions. In high $p_T$ range, non-zero $D^0$ $v_{2}$ is also observed, which indicates the path length dependent energy loss of charm quark.