  The coalescence model assumes instant formation of a bound state from unbound
particles based on the overlapping of two states in spatial and momentum spaces
and quantum numbers. Therefore, applied to the hadronization of partons, it
provides a snapshot of a Quark-Gluon Plasma (QGP) just before hadronization. We
use the coalesence model for the formation of the ground state of open heavy
flavor and the statistical model for heavier states. Assuming that all heavy
flavors in thermal equilibrium hadronize through the coalescence, we find that
the QGP just before hadronization is not composed of completely randomized
partons but must have strong correlations in color charges as well as in
momentum and/or coordinate spaces between heavy quark and light (anti-)quark.
