First observation of the directed flow of $D^0$ and $\overline{D^0}$ in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200~GeV

STAR Collaboration, J. Adam, L. Adamczyk +342

We report the first measurement of rapidity-odd directed flow ($v_1$) for $D^0$ and $\overline{D^0}$ mesons at mid-rapidity ($|y|<0.8$) in Au+Au collisions at $\sqrt{s_{\rm…