Figure 8

Average D meson and ${\rm J}/\psi$ relative yields as a function of the relative charged-particle multiplicity at central rapidity. D-meson yields are shown for $2< \pt< 4 \mathrm{GeV}/c$, while ${\rm J}/\psi$ yields are for $\pt>0$ (a) Inclusive ${\rm J}/\psi$ results for $|y|< 0.9$ are represented by empty black circles , inclusive ${\rm J}/\psi$ results for $2.5< y< 4.0$ by black filled symbols , and prompt D mesons by red filled circles (b) Prompt ${\rm J}/\psi$ results for $|y|< 0.9$ are represented by green filled crosses, and prompt D mesons by red filled circles (c) Non-prompt ${\rm J}/\psi$ results for $|y|< 0.9$ are represented by blue filled squares, and prompt D mesons by red filled circles The relative yields are presented on the top panels with their statistical (vertical bars) and systematic (boxes) uncertainties except the uncertainty on the feed-down fraction for D mesons, which is drawn separately on the bottom panels. The points are located on the x-axis at the average value of $({\rm d}N_{\rm ch}/{\rm d}\eta) \big/ \langle {\rm d}N_{\rm ch}/{\rm d}\eta \rangle$ The diagonal (dashed) line is drawn to guide the eye