Nonsingular potential model for heavy quarkonia

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Abstract
A nonsingular potential model for heavy quarkonia is described which does not require recourse to an illegitimate perturbative treatment for the investigation of quarkonium spectra. Our overall results for the energy levels, the leptonic widths, and the E1 transition widths are in very good agreement with the experimental data for bb¯ and they are reasonably good for cc¯. We also find that the confining part of the quarkonium potential is scalar-vector exchange rather than the currently favored scalar exchange.

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