Estimate of ${\alpha }_s(m_Z)$ in sum rules for bottomonium

Abstract

The value of ${\alpha }_s(m_Z)=0.106\pm 0.005$ is obtained in a scheme of sum rules for the leptonic constants of the vector $nS$-levels in the heavy $(\bar{b}b)$-quarkonium.

Comments: 5 pages, latex