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Recently the ALICE Collaboration has published a few data of charm hadrons inPb + Pb collisions at the CERN Large Hadron Collider (LHC). We extend the quarkcombination to the charm sector and point out that the measurement of charmhadron yields can provide important insights into charm quark hadronizationmechanism and properties of the hot and dense matter produced in high energyreactions. We propose several types of yield ratios, e.g. $D^{*+}/D^0$,$D_s^+/D^+$ and $\Lambda_c^+/D_s^+$, to measure various properties of low $p_T$charm quark hadronization. We argue that ratios $D_s^+/D^0$ and$2D_s^+/(D^0+D^+)$ as the function of transverse momentum can serve as goodprobes for the dynamics of charm quark hadronization. We further makepredictions for the yields and $p_T$ spectra of identified charm hadrons incentral Pb + Pb collisions at $\sqrt{s_{NN}}= 2.76$ TeV.

Yield correlations and $p_T$ dependence of charm hadrons in Pb + Pb collisions at $\sqrt{s_{NN}}= 2.76$ TeV