An analysis of the mass formula for S- and P-wave mesons

Mass regularities of S- and P-wave mesons and relations between their masses are discussed. A detailed analysis is given for S-wave mesons which extends the investigations on P-wave mesons reported earlier. Masses for the S- and P-states of all interesting qantiq-systems (including toponium states) are predicted. Partial understanding of the mass formulae is obtained within a general potential model approach. Scaling arguments are presented which support the empirical scaling behaviour found for the expectation values determining the spin-splittings in the potential picture. (author). 24 refs., 3 tabs., 2 figs