LEPTONIC DECAY CONSTANTS OF HEAVY QUARKONIA IN EFFECTIVE QCD SUM-RULES

The QCD sum rule scheme, which allows one to effectively take into account the heavy quarkonium peculiarities such as nonrelativistic motion and large mass values of the quarks, is considered. The phenomenological scaling law is derived for the leptonic constants using the heavy quarkonium mass spectra. The law describes the data on the values of f(phi), f(psi) and f(UPSILON) rather good and predicts f(B)c.