Quark Dressing and Constituent Mass Behavior for Heavy Quark Mesons

We explore the effects of quark dressing upon the masses and electroweak decay constants of ground state pseudoscalar and vector quarkonia and heavy-light mesons. Quark masses are varied from the u/d region to the b-quark region. The effectiveness of a constituent mass approximation is evaluated. Residual effects of dressing are clearly evident in the values of the decay constants in the c- and b-quark regions. This fully covariant study is made with a consistent ladder-rainbow truncation for the Bethe-Salpeter and Dyson-Schwinger equations.