Figure 5

Left: $\pt$ integrated ratios of D meson production cross sections compared with other experiments. Error bars are the quadratic sum of statistical and systematic uncertainties, without including the uncertainty on the BR which is common to all experiments. Right: strangeness suppression factor $\gamma_{\rm s}$ compared to measurements by other experiments. Predictions from PYTHIA 6.4.21 with the Perugia-0 tune and from a canonical implementation of the statistical hadronization model (SHM) are also shown. The gray band represents the uncertainty on the SHM predictions due to the uncertainty on the volume and on the strangeness fugacity (see text for details).