Principle-of-minimal-sensitivity-corrected quantities in heavy quarkonia

Stevenson's principle of minimal sensitivity is used in renormalizing radiative corrections to hyperfine splittings, leptonic and hadronic decay widths, and electric-dipole transition rates. Numerical values for these quantities are presented for the charmonium and bottomonium systems, enlisting several nonrelativistic phenomenological potential models to determine the best fit to the experimental data. It is shown that good results may be obtained within a single model in which to value of ΛQCD is calculated and kept constant for all predictions within that model. (33 refs., 23 tabs., 3 figs.)