2023 Impact factor 4.2
Particles and Fields
Eur. Phys. J. C 4, 107-114
DOI 10.1007/s100529800743

Mass spectra and leptonic decay widths of heavy quarkonia

L. Motyka - K. Zalewski

Institute of Physics, Jagellonian University, PL-30059 Kraków, Poland

Received: 17 June 1997 / Published online: 20 February 1998

Abstract
A nonrelativistic Hamiltonian with plausible spin dependent corrections is proposed for the quarkonia below their respective strong decay thresholds. With only six free parameters this model reproduces the nine known masses of the bottomonia within about 1 MeV, the six known masses of the charmonia within a few MeV and the five known leptonic decay widths of the 3S1 states within about 20 %. The model is then used to predict the masses of the remaining 43 quarkonia (some of them for the first time) and of the leptonic decay widths of the two ${}^1S_0(\overline{b}c)$ states. Comparison with some other models is made.


Copyright Springer-Verlag