Relativistic quark model of D-, D_S -, B- and B_S –mesons.

Abstract

The relativistic potential quark model of heavy-light mesons describing the motion of a light antiquark by the Dirac equation with a scalar-vector coupling is constructed. In the quasiclassical approximation we have obtained the simple asymptotic formulae for energy and mass spectra of D-, DS-, B- and BS-mesons ensuring an appropriate accuracy of calculations even for states with the radial quantum number nr ~ 1. Our results fully agree with experimental data.