Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-10-15
AIP Conf.Proc. 619 (2002) 336-345
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, plenary talk at the IXth International Conference on Hadron Spectroscopy (August 25-September 1, 2001) - HADRON 2001
Scientific paper
10.1063/1.1482462
The relativistic quark model is presented. The quark-antiquark potential for the Schroedinger-like equation is constructed with the account of retardation effects and one-loop radiative corrections. It consists of the one-gluon exchange part and the confining part which is the mixture of the Lorentz scalar and Lorentz vector contributions. The latter contains both the Dirac and Pauli terms. In the v^2/c^2 approximation the mass spectra of heavy quarkonia (charmonium and bottomonium) are calculated in good agreement with experiment. In the case of heavy-light mesons (B and D) the light quark is treated completely relativistically and only the expansion in the inverse heavy quark mass is used. The mass spectra of the ground and excited states of D, D_s, B, B_s mesons are calculated. They exhibit some features of the so-called ``level inversion''. The obtained results are generally in accord with experimental data. Still there exist some discrepancies between measurements of different collaborations.
Ebert Dietmar
Faustov Rudolf N.
Galkin V. O.
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