f_B^{stat} and \mu_\pi^2 in quasiclassical approximation of sum rules

Abstract

In the framework of sum rules with a use of quarkonium mass spectrum, evaluated in the quasiclassical approximation, estimates of leptonic constant $f_B^{stat}\simeq 320\pm 60$ MeV in a static limit and for the average heavy quark momentum squared ${\mu }_{\pi }^2\simeq 0.5\pm 0.1$ GeV${}^2$ are obtained.

Comments: 7 pages, LATEX file