Centrality dependence of $\RAA$ for prompt D mesons. Left: $\Dzero$ mesons with $2< \pt< 5 \gev/c$. Right: $\Dzero$, $\Dplus$, and $\Dstar$ mesons with $6< \pt< 12 \gev/c$ $\Dplus$ and $\Dstar$ points are displaced horizontally for better visibility. |