Title: Quarkonium energy splittings in perturbative QCD
Abstract:A $q\overline{q}$ potential model, derived from perturbative QCD and including one- and two-loop contributions, is applied to calculate energy splittings for heavy-quarkonium states. Calculations are ...A $q\overline{q}$ potential model, derived from perturbative QCD and including one- and two-loop contributions, is applied to calculate energy splittings for heavy-quarkonium states. Calculations are performed in momentum space using analytical partial-wave projections. The two-loop contributions give a significant improvement over the first-order results. The results are consistent with experimental data.Read More