arXiv:hep-ph/9401339·v1·High Energy Physics — Phenomenology

Scaling law for the $Υ (4 S) \to B B ˉ$ and $ψ (3770) \to D D ˉ$ decay constants from effective sum rules

V.V. Kiselev

Abstract

Sum rules for exclusive production of heavy meson pairs in $e^{+} e^{-}$ annihilation are used to evaluate the $Υ (4 S) \to B B ˉ$ and $ψ (3770) \to D D ˉ$ decay widths. Infinitely heavy quark limit is discussed, so that scaling law for the quarkonium-meson coupling constant is derived. A value of the $B B ˉ$ pair contribution into the leptonic constant $f_{Υ (4 S)}$ is estimated.

Comments: 14 pages, 1 Fig., Standard LATEX

Scaling law for the Υ(4S)→BBˉ and ψ(3770)→DDˉ decay constants from effective sum rules

Abstract

Scaling law for the $Υ (4 S) \to B B ˉ$ and $ψ (3770) \to D D ˉ$ decay constants from effective sum rules