  Pole trajectories connecting light and heavy scalar mesons, both broad
resonances and quasi-bound states, are computed employing a simple
coupled-channel model. Instead of varying the coupling constant as in previous
work, quark and meson masses are continuously changed, so as to have one scalar
meson evolve smoothly into another with different flavor(s). In particular, it
is shown, among several other cases, how the still controversial K0*(800) turns
into the established chi_c0, via the disputed D_s(2317). Moreover, a
chi'_c0(3946) is predicted, which may correspond to the recently observed
Y(3943) resonance. These results lend further support to our unified dynamical
picture of all scalar mesons, as unitarized q-qbar states with important
two-meson components.
