Semirelativistic potential model for heavy quarkonia

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Abstract

The cc\ifmmode\bar\else\textasciimacron\fi{}, bb\ifmmode\bar\else\textasciimacron\fi{}, and t t\ifmmode\bar\else\textasciimacron\fi{} spectra are investigated with the use of a semirelativistic potential model described in an earlier paper. Results for the energy levels, leptonic widths, and E1 transition widths are compared with the experimental data for cc\ifmmode\bar\else\textasciimacron\fi{} and bb\ifmmode\bar\else\textasciimacron\fi{} and predicted for t t\ifmmode\bar\else\textasciimacron\fi{}. We also find that the quark-antiquark interaction can best be described by a quasistatic rather than a momentum-dependent potential, and propose a theoretical justification for this surprising conclusion.

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