  Based on available data for mesonic resonances of light, medium and heavy
flavors, we have performed a global analysis to construct the corresponding
linear Regge trajectories. These have been supplemented by results from various
phenomenological models presented in the literature. A satisfactory formula is
found for the dependence of the intercept and the slope on quark masses. We
find reasonable agreement with data on production of charmed hadrons through
exchange of our charmed trajectories in the space-like region. When applied to
mesons containing the top quark, our results suggest the impossibility of their
formation as evidenced by other independent analyses.

High Energy Physics - Phenomenology